DOCSLIB.ORG

Webserver-Freebsd-7-2.Pdf

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text

Load more

µ¦·´Ê WebServer Ã¥Äo FreeBSD 7.2 § дѥішѧчшѤѸк WebServer ѱчѕѲнҖ FreeBSD 7.2 § діцѨћѩдќѥ www.mu-ph.org ѱчѕ ѯѝіѧєёѤьыѫҙ ьѧшѕҙьіѥ Email: [email protected] 12 ѝѧкўѥзє 2552 * * * * * * * * * Objective: шҖѠкдѥіъѼѥ WebServer еѠк Ѡкзҙді ѲўҖъдѐѫ ҐѥѕѲьѠкзҙдієѨ WebSite ѲнҖкѥь ѱчѕѲўҖ ѯьѪѸѠъзьјѣѨѷ 5 GBytes Specifications °Á¦ºÉ°¸ÉÄo CPU: Intel(R) Xeon(R) CPU E5405 @ 2.00GHz (1995.01-MHz 686-class CPU) Origin = "GenuineIntel" Id = 0x1067a Stepping = 10 Ram 2G HardDisk IDE 500G ¨³ 250 εª­°o° o°Â¦ 500G ­¦oµ / , swap ¨³ /backups o°¸É­° 250G ­¦oµ /var , /tmp , /usr ¨³ /usr/local Lan card 1 Ä (onboard) Ân partion ´¸Ê www# df Filesystem 1K-blocks Used Avail Capacity Mounted on /dev/ad5s1a 507630 146844 320176 31% / devfs 1 1 0 100% /dev /dev/ad7s1g 400913540 16644420 352196038 5% /backups /dev/ad7s1e 1012974 12 931926 0% /tmp /dev/ad7s1f 10154158 1150928 8190898 12% /usr /dev/ad5s1d 231978828 4 213420518 0% /usr/local /dev/ad7s1d 60931274 1066 56055708 0% /var www# ѱюіѰдієъѨѷјк 1. ÂoŠ¢j¤¸ÉεÁ} 2. Compile Kernel Á¡ºÉ°Ä®o¦°¦´ Firewall ¨³ Quota 3. Update ports tree 4. µ¦·´Ê Firewall 5. µ¦Îµ Quota 6. ·´Ê mysql50-server 7. ·´Ê Apache22 8. ·´Ê PHP5 9. ·´Ê PHP5-extensions 10. ·´Ê ZendOptimizer 11. ·´Ê webmin 12. ·´Ê phpmyadmin 13. ·´Ê vsftp 14. ·´Ê awstats 15. ·´Ê ntp 16. ·´Ê clamav 17. ·´Ê hostsentry 18. ·´Ê portsentry 19. ·´Ê lynx 20. ·´Ê phpbb3 21. ·´Ê denyhosts 22. µ¦ Backup Áª µ¦·´Ê WebServer Ã¥Äo FreeBSD 7.2 Ã¥ Á­¦·¤¡´»r ¥· r¦µ Page 1 µ¦·´Ê WebServer Ã¥Äo FreeBSD 7.2 јѼѥчѤэъѨѷ 1). ѰдҖѳеѰђґєъѨѷлѼѥѯюҝь ѲьдѥішѧчшѤѸкѝѥєѥіщћѩдќѥѳчҖлѥд http://bsd.psru.ac.th/microcom/micro240/install53_1.pdf http://bsd.psru.ac.th/microcom/micro240/install53_2.pdf ѯєѪѷѠшѧчшѤѸк FreeBSD 7.2 ѯіѨѕэіҖѠѕѰјҖњ ѯіѥдѶъѼѥдѥіѰдҖѳеѰђґєъѨѷлѼѥѯюҝьѯэѪѸѠкшҖьъѼѥѳчҖѱчѕ login as: sermpan Using keyboard-interactive authentication. Password: Last login: Mon Aug 10 11:02:38 2009 from proxy.mu-ph.org Copyright (c) 1980, 1983, 1986, 1988, 1990, 1991, 1993, 1994 The Regents of the University of California. All rights reserved. FreeBSD 7.2-RELEASE (GENERIC) #0: Fri May 1 08:49:13 UTC 2009 Welcome to FreeBSD! Before seeking technical support, please use the following resources: o Security advisories and updated errata information for all releases are at http://www.FreeBSD.org/releases/ - always consult the ERRATA section for your release first as it's updated frequently. o The Handbook and FAQ documents are at http://www.FreeBSD.org/ and, along with the mailing lists, can be searched by going to http://www.FreeBSD.org/search/. If the doc distribution has been installed, they're also available formatted in /usr/share/doc. If you still have a question or problem, please take the output of `uname -a', along with any relevant error messages, and email it as a question to the [email protected] mailing list. If you are unfamiliar with FreeBSD's directory layout, please refer to the hier(7) manual page. If you are not familiar with manual pages, type `man man'. You may also use sysinstall(8) to re-enter the installation and configuration utility. Edit /etc/motd to change this login announcement. $ su root Password: www# ѯіѧѷєчҖњѕѰдҖѰђґє Welcome ѲўҖјчдѥі Delay лѥд 10 њѧьѥъѨ ѯўјѪѠ 3 њѧьѥъѨ www# vi /boot/defaults/loader.conf ############################################################## ### Loader settings ######################################## ############################################################## #autoboot_delay="10" # Delay in seconds before autobooting, autoboot_delay="3" # Delay in seconds before autobooting, ѰјѣѰдҖѰђґє sshd_config ѯёѪѷѠѠьѫрѥшѲўҖ User нѪѷѠ sermpan ѝѥєѥіщъѨѷлѣ Secure Shell ѳчҖѰшҕѯёѨѕкяѬҖѯчѨѕњ www# vi /etc/ssh/sshd_config # Authentication: AllowUsers sermpan #LoginGraceTime 2m #PermitRootLogin no #StrictModes yes #MaxAuthTries 6 #MaxSessions 10 Save ѰјҖњѝѤѷк Reload www# /etc/rc.d/sshd reload www# µ¦·´Ê WebServer Ã¥Äo FreeBSD 7.2 Ã¥ Á­¦·¤¡´»r ¥· r¦µ Page 2 µ¦·´Ê WebServer Ã¥Äo FreeBSD 7.2 јѼѥчѤэъѨѷ 2). Compile Kernel ѯёѪѷѠѲўҖіѠкіѤэ Firewall Ѱјѣ Quota www# cd /usr/src/sys/i386/conf/ www# cp GENERIC PH www# vi PH ; ѲўҖѳчҖѯюҝьчѤкьѨѸ (ѯёѧѷєѲѝҕѝҕњьъѨѷѯюҝьёѪѸьѝѨѰчк) www# cat PH # # GENERIC -- Generic kernel configuration file for FreeBSD/i386 # # For more information on this file, please read the handbook section on # Kernel Configuration Files: # # http://www.FreeBSD.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig-config.html # # The handbook is also available locally in /usr/share/doc/handbook # if you've installed the doc distribution, otherwise always see the # FreeBSD World Wide Web server (http://www.FreeBSD.org/) for the # latest information. # # An exhaustive list of options and more detailed explanations of the # device lines is also present in the ../../conf/NOTES and NOTES files. # If you are in doubt as to the purpose or necessity of a line, check first # in NOTES. # # $FreeBSD: src/sys/i386/conf/GENERIC,v 1.474.2.15.2.1 2008/11/25 02:59:29 kensmith Exp $ cpu I486_CPU cpu I586_CPU cpu I686_CPU #ident GENERIC ident PH # To statically compile in device wiring instead of /boot/device.hints #hints "GENERIC.hints" # Default places to look for devices. makeoptions DEBUG=-g # Build kernel with gdb(1) debug symbols options SCHED_ULE # ULE scheduler options PREEMPTION # Enable kernel thread preemption options INET # InterNETworking options INET6 # IPv6 communications protocols options SCTP # Stream Control Transmission Protocol options FFS # Berkeley Fast Filesystem options SOFTUPDATES # Enable FFS soft updates support options UFS_ACL # Support for access control lists options UFS_DIRHASH # Improve performance on big directories options UFS_GJOURNAL # Enable gjournal-based UFS journaling options MD_ROOT # MD is a potential root device options NFSCLIENT # Network Filesystem Client options NFSSERVER # Network Filesystem Server options NFSLOCKD # Network Lock Manager options NFS_ROOT # NFS usable as /, requires NFSCLIENT options MSDOSFS # MSDOS Filesystem options CD9660 # ISO 9660 Filesystem options PROCFS # Process filesystem (requires PSEUDOFS) options PSEUDOFS # Pseudo-filesystem framework options GEOM_PART_GPT # GUID Partition Tables. options GEOM_LABEL # Provides labelization options COMPAT_43TTY # BSD 4.3 TTY compat [KEEP THIS!] options COMPAT_FREEBSD4 # Compatible with FreeBSD4 options COMPAT_FREEBSD5 # Compatible with FreeBSD5 options COMPAT_FREEBSD6 # Compatible with FreeBSD6 options SCSI_DELAY=5000 # Delay (in ms) before probing SCSI options KTRACE # ktrace(1) support options STACK # stack(9) support options SYSVSHM # SYSV-style shared memory options SYSVMSG # SYSV-style message queues options SYSVSEM # SYSV-style semaphores options _KPOSIX_PRIORITY_SCHEDULING # POSIX P1003_1B real-time extensions options KBD_INSTALL_CDEV # install a CDEV entry in /dev options ADAPTIVE_GIANT # Giant mutex is adaptive. options STOP_NMI # Stop CPUS using NMI instead of IPI options AUDIT # Security event auditing µ¦·´Ê WebServer Ã¥Äo FreeBSD 7.2 Ã¥ Á­¦·¤¡´»r ¥· r¦µ Page 3 µ¦·´Ê WebServer Ã¥Äo FreeBSD 7.2 #options KDTRACE_HOOKS # Kernel DTrace hooks # # Add Firewall & Quota to kernel # options IPFIREWALL options IPFIREWALL_FORWARD options IPFIREWALL_DEFAULT_TO_ACCEPT options IPFIREWALL_VERBOSE options IPFIREWALL_VERBOSE_LIMIT=120 options IPDIVERT options QUOTA # # End of Additional Line # . www# pwd /usr/src/sys/i386/conf www# ll total 82 -rw-r--r-- 1 root wheel 13 Jun 20 2005 .cvsignore -rw-r--r-- 1 root wheel 534 Apr 15 10:14 DEFAULTS -rw-r--r-- 1 root wheel 12472 Apr 15 10:14 GENERIC -rw-r--r-- 1 root wheel 1745 Apr 15 10:14 GENERIC.hints -rw-r--r-- 1 root wheel 1034 Apr 15 10:14 MAC -rw-r--r-- 1 root wheel 131 Apr 15 10:14 Makefile -rw-r--r-- 1 root wheel 38891 Apr 15 10:14 NOTES -rw-r--r-- 1 root wheel 2016 Apr 15 10:14 PAE -rw-r--r-- 1 root wheel 12786 Aug 12 16:51 PH -rw-r--r-- 1 root wheel 3539 Apr 15 10:14 XBOX www# config PH Kernel build directory is ../compile/PH Don't forget to do ``make cleandepend && make depend'' www# cd ../compile/PH www# make depend ; make ; make install . ===> zyd (install) install -o root -g wheel -m 555 if_zyd.ko /boot/kernel install -o root -g wheel -m 555 if_zyd.ko.symbols /boot/kernel kldxref /boot/kernel www# іѠльдіѣъѤѷкъѼѥкѥьѯѝіѶлѝѤѷк Reboot www# reboot µ¦·´Ê WebServer Ã¥Äo FreeBSD 7.2 Ã¥ Á­¦·¤¡´»r ¥· r¦µ Page 4 µ¦·´Ê WebServer Ã¥Äo FreeBSD 7.2 јѼѥчѤэъѨѷ 3). Update ports tree ѯєѪѷѠшѧчшѤѸк FreeBSD 7.2 ѯіѨѕэіҖѠѕѰјҖњ ѯіѥдѶъѼѥдѥі Update ports ъѼѥѳчҖѱчѕ login as: sermpan Using keyboard-interactive authentication. Password: Last login: Tue Aug 4 20:03:36 2009 from proxy.mu-ph.org Copyright (c) 1980, 1983, 1986, 1988, 1990, 1991, 1993, 1994 The Regents of the University of California. All rights reserved. FreeBSD 7.2-RELEASE (PH) #0: Tue Aug 4 18:53:55 ICT 2009 Welcome to FreeBSD! Before seeking technical support, please use the following resources: o Security advisories and updated errata information for all releases are at http://www.FreeBSD.org/releases/ - always consult the ERRATA section for your release first as it's updated frequently. o The Handbook and FAQ documents are at http://www.FreeBSD.org/ and, along with the mailing lists, can be searched by going to http://www.FreeBSD.org/search/. If the doc distribution has been installed, they're also available formatted in /usr/share/doc. If you still have a question or problem, please take the output of `uname -a', along with any relevant error messages, and email it as a question to the [email protected] mailing list. If you are unfamiliar with FreeBSD's directory layout, please refer to the hier(7) manual page. If you are not familiar with manual pages, type `man man'. You may also
Recommended publications
  • The Science DMZ

    The Science DMZ

    The Science DMZ Brian Tierney, Eli Dart, Eric Pouyoul, Jason Zurawski ESnet Supporting Data-Intensive Research Workshop QuestNet 2013 Gold Coast, Australia July 2, 2013 What’s there to worry about? © Owen Humphreys/National Geographic Traveler Photo Contest 2013 7/2/13 2 Lawrence Berkeley National Laboratory U.S. Department of Energy | Office of Science The Science DMZ in 1 Slide Consists of three key components, all required: “Friction free” network path • Highly capable network devices (wire-speed, deep queues) • Virtual circuit connectivity option • Security policy and enforcement specific to science workflows • Located at or near site perimeter if possible Dedicated, high-performance Data Transfer Nodes (DTNs) • Hardware, operating system, libraries all optimized for transfer • Includes optimized data transfer tools such as Globus Online and GridFTP Performance measurement/test node • perfSONAR Details at http://fasterdata.es.net/science-dmz/ Lawrence Berkeley National Laboratory U.S. Department of Energy | Office of Science Overview Part 1: • What is ESnet? • Science DMZ Motivation • Science DMZ Architecture Part 2: • PerfSONAR • The Data Transfer Node • Data Transfer Tools Part 3: • Science DMZ Security Best Practices • Conclusions Lawrence Berkeley National Laboratory U.S. Department of Energy | Office of Science The Energy Sciences Network (ESnet) A Department of Energy Facility Naonal Fiber footprint Distributed Team of 35 Science Data Network Internaonal Collaboraons Mul3ple 10G waves 5 Lawrence Berkeley National Laboratory U.S. Department of Energy | Office of Science ESnetSC Supports Supports Research DOE at More Office than 300 of Institutions Science Across the U.S. Universities DOE laboratories The Office of Science supports: 27,000 Ph.D.s, graduate students, undergraduates, engineers, and technicians 26,000 users of open-access facilities 300 leading academic institutions 17 DOE laboratories 6 Lawrence Berkeley National Laboratory U.S.
  • On Intelligent Mitigation of Process Starvation in Multilevel Feedback Queue Scheduling Joseph E

    On Intelligent Mitigation of Process Starvation in Multilevel Feedback Queue Scheduling Joseph E

    Kennesaw State University DigitalCommons@Kennesaw State University Master of Science in Computer Science Theses Department of Computer Science Spring 4-20-2017 On Intelligent Mitigation of Process Starvation In Multilevel Feedback Queue Scheduling Joseph E. Brown Kennesaw State University Follow this and additional works at: http://digitalcommons.kennesaw.edu/cs_etd Part of the Computational Engineering Commons Recommended Citation Brown, Joseph E., "On Intelligent Mitigation of Process Starvation In Multilevel Feedback Queue Scheduling" (2017). Master of Science in Computer Science Theses. 8. http://digitalcommons.kennesaw.edu/cs_etd/8 This Thesis is brought to you for free and open access by the Department of Computer Science at DigitalCommons@Kennesaw State University. It has been accepted for inclusion in Master of Science in Computer Science Theses by an authorized administrator of DigitalCommons@Kennesaw State University. For more information, please contact [email protected]. On Intelligent Mitigation of Process Starvation In Multilevel Feedback Queue Scheduling Master of Science in Computer Science Thesis By Joseph E Brown MSCS Student Department of Computer Science College of Computing and Software Engineering Kennesaw State University, USA Submitted in partial fulfillment of the Requirements for the degree of Master of Science in Computer Science November 2016 On Intelligent Mitigation of Process Starvation In Multilevel Feedback Queue Scheduling This thesis approved for recommendation to the Graduate Council. 2 Kennesaw State University College of Computing and Software Engineering Thesis Title: On Intelligent Mitigation of Process Starvation In Multilevel Feedback Queue Schedul- ing . Author: Joseph E Brown. Department: Computer Science. Approved for Thesis Requirements of the Master of Science Degree Thesis Advisor: Ken Hoganson Date Thesis Reader: Dr.
  • Linux Networking Cookbook.Pdf

    Linux Networking Cookbook.Pdf

    Linux Networking Cookbook ™ Carla Schroder Beijing • Cambridge • Farnham • Köln • Paris • Sebastopol • Taipei • Tokyo Linux Networking Cookbook™ by Carla Schroder Copyright © 2008 O’Reilly Media, Inc. All rights reserved. Printed in the United States of America. Published by O’Reilly Media, Inc., 1005 Gravenstein Highway North, Sebastopol, CA 95472. O’Reilly books may be purchased for educational, business, or sales promotional use. Online editions are also available for most titles (safari.oreilly.com). For more information, contact our corporate/institutional sales department: (800) 998-9938 or [email protected]. Editor: Mike Loukides Indexer: John Bickelhaupt Production Editor: Sumita Mukherji Cover Designer: Karen Montgomery Copyeditor: Derek Di Matteo Interior Designer: David Futato Proofreader: Sumita Mukherji Illustrator: Jessamyn Read Printing History: November 2007: First Edition. Nutshell Handbook, the Nutshell Handbook logo, and the O’Reilly logo are registered trademarks of O’Reilly Media, Inc. The Cookbook series designations, Linux Networking Cookbook, the image of a female blacksmith, and related trade dress are trademarks of O’Reilly Media, Inc. Java™ is a trademark of Sun Microsystems, Inc. .NET is a registered trademark of Microsoft Corporation. Many of the designations used by manufacturers and sellers to distinguish their products are claimed as trademarks. Where those designations appear in this book, and O’Reilly Media, Inc. was aware of a trademark claim, the designations have been printed in caps or initial caps. While every precaution has been taken in the preparation of this book, the publisher and author assume no responsibility for errors or omissions, or for damages resulting from the use of the information contained herein.
  • Thread Scheduling in Multi-Core Operating Systems Redha Gouicem

    Thread Scheduling in Multi-Core Operating Systems Redha Gouicem

    Thread Scheduling in Multi-core Operating Systems Redha Gouicem To cite this version: Redha Gouicem. Thread Scheduling in Multi-core Operating Systems. Computer Science [cs]. Sor- bonne Université, 2020. English. tel-02977242 HAL Id: tel-02977242 https://hal.archives-ouvertes.fr/tel-02977242 Submitted on 24 Oct 2020 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Ph.D thesis in Computer Science Thread Scheduling in Multi-core Operating Systems How to Understand, Improve and Fix your Scheduler Redha GOUICEM Sorbonne Université Laboratoire d’Informatique de Paris 6 Inria Whisper Team PH.D.DEFENSE: 23 October 2020, Paris, France JURYMEMBERS: Mr. Pascal Felber, Full Professor, Université de Neuchâtel Reviewer Mr. Vivien Quéma, Full Professor, Grenoble INP (ENSIMAG) Reviewer Mr. Rachid Guerraoui, Full Professor, École Polytechnique Fédérale de Lausanne Examiner Ms. Karine Heydemann, Associate Professor, Sorbonne Université Examiner Mr. Etienne Rivière, Full Professor, University of Louvain Examiner Mr. Gilles Muller, Senior Research Scientist, Inria Advisor Mr. Julien Sopena, Associate Professor, Sorbonne Université Advisor ABSTRACT In this thesis, we address the problem of schedulers for multi-core architectures from several perspectives: design (simplicity and correct- ness), performance improvement and the development of application- specific schedulers.
  • การติดตั้ง Webserver โดยใช้ Freebsd

    การติดตั้ง Webserver โดยใช้ Freebsd

    การติดต้งั WebServer โดยใช ้ FreeBSD 8.2 Rev001: Apr 1,2011 § การตดติ งั้ WebServer โดยใช ้ FreeBSD 8.2 § กรณีศกษาึ www.mu-ph.org โดย เสรมพิ นธั ุ ์ นตยิ นรา์ Email: [email protected] 1 เมษายน 2554 [** Rev01 : Apr 01,2011 **] * * * * * * * * * Objective: ต้องการทาํ WebServer ของ องค์กร ให้ทุกฝ่ ายในองค์กรม ี WebSite ใช้งาน โดยให้เนือท้ ฝี่ ่ ายละ 1 GBytes Specifications ของเครื่องที่ใช้ www# dmesg Copyright (c) 1992-2011 The FreeBSD Project. Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994 The Regents of the University of California. All rights reserved. FreeBSD is a registered trademark of The FreeBSD Foundation. FreeBSD 8.2-RELEASE #0: Fri Feb 18 02:24:46 UTC 2011 [email protected]:/usr/obj/usr/src/sys/GENERIC i386 Timecounter "i8254" frequency 1193182 Hz quality 0 CPU: Intel(R) Xeon(TM) CPU 2.40GHz (2392.06-MHz 686-class CPU) Origin = "GenuineIntel" Id = 0xf29 Family = f Model = 2 Stepping = 9 Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI, MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE> Features2=0x4400<CNXT-ID,xTPR> real memory = 1073741824 (1024 MB) avail memory = 1036226560 (988 MB) ACPI APIC Table: <DELL PE1600SC> FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs FreeBSD/SMP: 4 package(s) x 1 core(s) cpu0 (BSP): APIC ID: 0 cpu1 (AP): APIC ID: 1 cpu2 (AP): APIC ID: 6 cpu3 (AP): APIC ID: 7 แบ่ง partition ดังนี ้ www# df Filesystem 1K-blocks Used Avail Capacity Mounted on /dev/amrd0s1a 1012974 176512 755426 19% / devfs 1 1 0 100% /dev /dev/amrd0s1h 63488502 4 58409418 0% /backups /dev/amrd0s1g 1012974 12 931926 0% /tmp /dev/amrd0s1e 5077038 832996 3837880 18% /usr /dev/amrd0s1f 50777034 4 46714868 0% /usr/local/www /dev/amrd0s1d 15231278 278 14012498 0% /var www# โปรแกรมทลงี่ 1.
  • Processes Process Structure

    Processes Process Structure

    Processes Process structure The process structure contains: • Processes execute in user mode (application code) or kernel mode (operating system code). • Process identification (PID) • The user mode state consists of the processor registers • signal state and of the content of the memory segments. • timers: real-time and CPU-utilization counters • The kernel mode state consists of the processor registers • Pointers to the substructures and the information the kernel stores about the process. • The kernel state for each process is divided into several different data structures (fig. 4.1). • The top level data structures are the process structure and the user structure. • In old Unix systems the user structure contained data that was not needed when the process was swapped out. • In FreeBSD the user structure is used for only a couple of structures referenced from the process structure. • A new thread structure has been introduced in FreeBSD to keep information about a single thread. 1 2 Process structure, cont. Thread structure The thread structure contains the following categories of information: The process substructures (fig. 4.1) have the following categories of information: • Scheduling: for example thread priority • Thread state: (runnable, sleeping), and wait channel if • Process-group identification sleeping. • User credentials (UID, GID) • Machine state: the machine dependent thread information • Memory management • TCB (Thread Control Block): the user and kernel mode • File descriptors execution states including MMU registers • Resource accounting • Kernel stack: the per-thread execution stack for the kernel • Statistics • Signal actions • Thread structure Processes can be in any of the following states: NEW, NORMAL, or ZOMBIE. A process in NORMAL state can be RUNNABLE, SLEEPING or STOPPED.
  • Schedulers University of New Mexico

    Schedulers University of New Mexico

    Schedulers University of New Mexico https://commons.wikimedia.org/wiki/ File:Simplified_Structure_of_the_Linux_Kern el.svg 2 University of New Mexico O(1) scheduler (older) Two arrays, switching between them is just changing a pointer Uses heuristics to try to know which processes are interactive Average sleep time https://en.wikipedia.org/wiki/O(1)_scheduler 3 University of New Mexico CFS scheduler (currently in Linux) Completely Fair Scheduler Red-black tree of execution to the nanosecond niffies Like weighted fair queuing for packet networks An ideal processor would share equally maximum execution time = time the process has been waiting to run / total number of processes https://en.wikipedia.org/wiki/Completely_Fair_Scheduler 4 University of New Mexico BFS (now MuQQS) Brain “Hug” Scheduler Specifically for desktops Weighted round-robin where the weights are based on some very complex formulae (see Wikipedia for details) No priority modification for sleep behavior Time slice = 6ms (human perception of jitter ≈ 7ms) Performs slightly better than CFS for <16 cores https://en.wikipedia.org/wiki/Brain_Fuck_Scheduler https://lwn.net/Articles/720227/ 5 University of New Mexico Windows NT through 10 ● Multilevel Feedback Queue (MLFQ) 6 University of New Mexico Mac OS X ● XNU is a mix of FreeBSD and Mach – Network, files, processes, POSIX interface, etc. come from FreeBSD – CPU scheduling, memory management, specialized IPC, etc. comes from Mach ● Round-robin and MLFQ schedulers 7 University of New Mexico IOS (i.e., iPhone)
  • GWDG-Nachrichten 03/2018

    GWDG-Nachrichten 03/2018

    03|18 GitLab GWDG ownCloud HLRN-IV Spectre und Meltdown Plagiatspräventionsdienste Thread Scheduling on Multi-core Systems ZEITSCHRIFT FÜR DIE KUNDEN DER GWDG Impressum Zeitschrift für die Kunden der GWDG ISSN 0940-4686 41. Jahrgang 03|18 Ausgabe 3/2018 Erscheinungsweise: monatlich www.gwdg.de/gwdg-nr Auflage: 550 4 Kollaborative Sourcecode-Verwaltung mit Fotos: © Maxim_Kazmin - Fotolia.com (1) © teguhjatipras - Fotolia.com (4) GitLab 8 GWDG ownCloud: Upgrade auf © momius - Fotolia.com (11) © fotogestoeber - Fotolia.com (15) © pterwort - Fotolia.com (25) Version X 10 Mehr Rechenleistung für © nito - Fotolia.com (26, 27) © MPIbpc-Medienservice (3, 28) Norddeutschland 12 Prozessor-Schwachstellen © Universität Göttingen / Jan Vetter (10, 11) © GWDG (2, 29) „Spectre“ und „Meltdown“ 16 Steigende Herausgeber: Gesellschaft für wissenschaftliche Datenverarbeitung mbH Göttingen Nutzung der Plagiatspräventionsdienste der Am Faßberg 11 37077 Göttingen Tel.: 0551 201-1510 GWDG 17 Kurz & knapp 18 Thread Scheduling Fax: 0551 201-2150 Redaktion: on Multi-core Systems 26 Stellenangebot Dr. Thomas Otto E-Mail: [email protected] 28 Personalia 29 Kurse Herstellung: Franziska Schimek E-Mail: [email protected] Druck: Kreationszeit GmbH, Rosdorf 3 03|18 Prof. Dr. Ramin Yahyapour [email protected] 0551 201-1545 Liebe Kunden und Freunde der GWDG, die Verfügbarkeit von und der Zugang zu leistungsfähigen Rechenressourcen ist für viele Wissenschaftsdisziplinen erfolgskritisch. Aus diesem Grund gibt es den kontinuierlich steigenden Bedarf an High-Performance-Computing-Clustern. Wie in einer früheren Ausgabe der GWDG-Nachrichten berichtet und auch in der Presse zu lesen, wird Göttin- gen einer der beiden Betriebsstandorte für die vierte Generation des Hochleistungsrech- ners Nord (HLRN-IV). Zusammen mit den Kollegen vom Zuse-Institut Berlin wurden in den letzten Monaten die zugehörige Ausschreibung und Vergabe betreut.
  • Recent and Forthcoming Freebsd Releases

    Recent and Forthcoming Freebsd Releases

    Recent and Forthcoming FreeBSD Releases David Malone <[email protected]> 14 February 2009 W3 Servers IRELAND (November 1993) CURIA Irish Literature archive IEunet Networking Information regarding Ireland, and Links to the rest of Europe. Trinity College Dublin Dept of Mathematics IONA Technologies Ltd. info about their Object Request Broker software product and some bits and pieces of Irish news The University of Limerick Information on Natural Language Processing and some research projects in the Department of Computer Science and Information Systems. (Not using http yet) Plan • How the FreeBSD project runs. • How our releases are structured. • How we got to FreeBSD 7. • FreeBSD 7.1 and 7.X. • What’s to come next. A bit about me • Work in Hamilton Institute NUI Maynooth. • Background in maths and sysadmin. • About 1995 wanted to build xterms. • Looked at cheap ways of doing it. • Found FreeBSD. • Got involved in bugfixing. • In 2000 became a committer. The Blurb FreeBSD is an advanced operating system for modern server, desktop, and embedded computer platforms. FreeBSD’s code base has undergone over thirty years of continuous development, improvement, and optimization. It is developed and maintained by a large team of individuals. FreeBSD provides advanced networking, impressive security features, and world class performance and is used by some of the world’s busiest web sites and most pervasive embedded networking and storage devices. FreeBSD Project Structure • Users (unknown number). • Contributors (thousands?). • Committers • doc: 54, • ports: 157, • src: 204. • Elect or coopt various special groups • bug busters, • core, • security team, • ... FreeBSD Releases • The most recent version of FreeBSD is -current.
  • Leveraging Data from Open-Source Intrusion Detection Systems for Enhancing Security of Systems

    Leveraging Data from Open-Source Intrusion Detection Systems for Enhancing Security of Systems

    Leveraging Data from Open-Source Intrusion Detection Systems for Enhancing Security of Systems Viren Chhabria A Dissertation Presented to the University of Dublin, Trinity College in partial fulfilment of the requirements for the degree of Master of Science in Computer Science (Data Science) Supervisor: Dr. Stephen Farrell August 2019 Declaration I, the undersigned, declare that this work has not previously been submitted as an exercise for a degree at this, or any other University, and that unless otherwise stated, is my own work. Viren Chhabria August 14, 2019 Permission to Lend and/or Copy I, the undersigned, agree that Trinity College Library may lend or copy this thesis upon request. Viren Chhabria August 14, 2019 To my mother, Bhavna R Chhabria and father, Rajkumar T Chhabria, for their endless love and support! Acknowledgments I would like to express my sincere gratitude to my supervisor Dr. Stephen Farrell for his constant support and supervision. His knowledge and experience helped me over- come challenging situations during the course of this dissertation. A big thank you to my parents and family for enabling me to pursue my MSc program at Trinity College Dublin and supporting me throughout this wonderful journey. I would like to thank Prof. Khurshid Ahmad, for mentoring, motivating and support- ing me. Last, but not the least, I would like to thank my friends. Ankita for motivating me throughout the project. Arun and Debrup for providing me innovative ideas and technical guidance. Rohit, for helping me with machine learning during the project. Dr. Husanbir Singh Pannu for motivating me and providing tips for efficient writing.
  • Reflection for Secure IT for UNIX

    Reflection for Secure IT for UNIX

    User's Guide Reflection for Secure IT for UNIX Version 8.0 SP2 Copyrights and Notices © 2016 Attachmate Corporation, a Micro Focus company. All rights reserved. No part of the documentation materials accompanying this Micro Focus software product may be reproduced, transmitted, transcribed, or translated into any language, in any form by any means, without the written permission of Micro Focus or its affiliates. The content of this document is protected under copyright law even if it is not distributed with software that includes an end user license agreement. The content of this document is furnished for informational use only, is subject to change without notice, and should not be construed as a commitment by Micro Focus. Micro Focus assumes no responsibility or liability for any errors or inaccuracies that may appear in the informational content contained in this document. Micro Focus, the Micro Focus logo, FileXpress, and Reflection are registered trademarks of Micro Focus or its subsidiaries or affiliated companies in the United Kingdom, United States and other countries. All other trademarks, trade names, or company names referenced herein are used for identification only and are the property of their respective owners. 1Installation 7 Which Package do I Need? . 8 Replace an Earlier Version or other Existing Secure Shell Program . 9 Install and Uninstall on Linux . 10 Set up High Availability Red Hat Clusters . 11 Install and Uninstall on Oracle Solaris 10 . 12 Install and Uninstall on Oracle Solaris 11. 13 Install and Uninstall on HP-UX. 17 Install and Uninstall on IBM AIX . 17 Migrate Settings from Existing Configuration Files.
  • ULE: a Modern Scheduler for Freebsd

    ULE: a Modern Scheduler for Freebsd

    USENIX Association Proceedings of BSDCon ’03 San Mateo, CA, USA September 8–12, 2003 THE ADVANCED COMPUTING SYSTEMS ASSOCIATION © 2003 by The USENIX Association All Rights Reserved For more information about the USENIX Association: Phone: 1 510 528 8649 FAX: 1 510 548 5738 Email: [email protected] WWW: http://www.usenix.org Rights to individual papers remain with the author or the author's employer. Permission is granted for noncommercial reproduction of the work for educational or research purposes. This copyright notice must be included in the reproduced paper. USENIX acknowledges all trademarks herein. ULE: A Modern Scheduler For FreeBSD Jeff Roberson The FreeBSD Project [email protected] Abstract The existing thread scheduler in FreeBSD was well suited towards the computing environment that it was developed in. As the priorities and hardware targets of the project have changed, new features and scheduling properties were required. This paper presents ULE, a scheduler that is designed with modern hardware and requirements in mind. Prior to discussing ULE, the designs of several other schedulers are presented to provide some context for comparison. A simple scheduler profiling tool is also discussed, the results of which provide a basis for making simple comparisons between important aspects of several schedulers. 1 Motivation UP. These efforts were examined while ULE was under development and many of them had some The FreeBSD project began a considerable shift in influence in its design. ULE was intended to be a kernel architecture for the 5.0 release. The new production quality modern scheduler from the start. As architecture is geared towards SMP (Symmetric Multi- such evolution was preferred over revolution.