Linux SMP HOWTO: What's new ?

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## 10. What's new ?

v1.14, 9 july 2002

  - First release since in almost two years
  - Added article Multiprocessor Specification Support (Randy Dunlap)
  - Added explanation of "unexpected IO-APIC" problem
  - Added a note on changes between 2.2.x and 2.4.x kernels
  - Added new section update on SPARC (Lionel, trollhunter Bouchpan-Lerust-Juery)
  - Added various questions and answers
  - Deleted "SMP specific limit with current kernel (2.2)": outdated
  - Changed word "current" from kernel 2.2 documents

v1.12.1, 25 october 2000

  - Put all authors in Bryant, Hartner, Qi and Venkitachalam paper

v1.12, 22 october 2000

  - Explanation on why not trust Xosview on scheduling (Rik van Riel)
  - A pointer to an article that compares 2.2 and 2.4 kernels (Ray Bryant)

v1.11, 8 october 2000

  - Linux boots on a Sun E1000 with 24 CPUs
  - Linux boots on a AlphaServer with 31 CPUs

v1.10, 5 october 2000

  - New linux-smp mailing-list adress : linux-smp@vger.kernel.org (me)
  - Tell where to find RTC setting in kernel config (Patrick Doyle)
  - glossary updated and concepts added (from a french version made by Ludovic Danigo)
  - Fixed an inconsistency (Matthias Schniedermeyer)
  - Deleted wrong links (Johan Ekenberg)

v1.9.1, 28 september 2000

  - updated with a submission from Stig Telfer detailing SMP support on API Alpha systems

v1.9, 13 january 2000

  - Remember to disable all BIOS power-save features (Osamu Aoki)
  - Explain how to access to Compaq server into advanced configuration mode (Adrian Portelli)

v1.8, 8 november 1999

  - quad-celeron motherboard was a hoax, restored old paragraph (Simen Timian Thoresen)

v1.7, 6 november 1999

  - new introduction (C. Polisher aka cp)
  - numerous typo and grammatical fixes (cp)
  - introductory paragraph on kernel compilation (cp)
  - introductory paragraph on SMP need (cp)
  - reference on KAI optimizing compiler (Gero Wedemann)
  - quad-celeron motherboard exists (Jeffrey H. Ingber)

v1.6, 21 october 1999

  - added information on xosview scheduling perturbation
  - added "APIC error interrupt on CPU#n" message information
  - added information on hard lockup
  - deleted section "How to optain maximum performance" (was obsolete)
  - added info on dual systems with different x86 procs (a Celeron and a P-II)

v1.5, 4 october 1999

  - more precision in PSET description

v1.4, 30 september 1999

  - precize to enable MTRR support for an x86 SMP kernel (me)

v1.3, 29 september 1999

  - many many grammar and typographical fixes (Wade Hampton aka hww)
  - added info in short introduction related to 2.2/2.4/2.0 diffs (hww)
  - added step by step things to do to recompile a kernel (hww and me)
  - added info related to SMP/UP modules problems (hww)
  - added precision in Posix Threads section related to user (hww) vs. kernel threads (hww)
  - new item about NFS and kernel lock (hww)
  - new item about kernel lock without message (hww)
  - new item about debugging lockup problems (hww)
  - added info about heating problems (hww)
  - miscellaneous updates I've forget about (hww)
  - new item about floppy access and sound (hww)

v1.2, 27 september 1999

  - name change: this document is now a HOWTO. TWD, and fast! (Guylhem Aznar)

v1.1, 26 september 1999

  - added a link to first Chris Pirih FAQ draft
  - expanted an IRQ related problems

v1.00, 25 september 1999

  - first upgrade in a long long time!
  - reprocessed the whole FAQ: 2.2 is here and 2.4 soon
  - added kernel locking information from Ingo Molnar
  - deleted item "How will my application perform under SMP?": outdated
  - deleted item "My SMP system is locking up all the time.": outdated
  - deleted item "You are running 2.0.35 aren't you ?": outdated
  - deleted item "Some hardware is also known to cause problems.": outdated
  - blanked section "Motherboards with known problems". We should restart from scratch
  - deleted section "Motherboards with NO known problems": outdated
  - updated dual celeron section (numerous people)
  - added "SPARC sun4m SMP machines" to supported SMP sparc machines (Anton Blanchard)
  - added a "During boot machine hang signaling an IOAPIC problem" item in "Why it doesn't work on my machine?" section
  - added a "What about SMP performances?" item
  - updated "Why doesn't my old Compaq work?" item
  - fixed an outdated pointer
  - added a pointer to Ingo test SMP patches

v0.54, 13 march 1999

  - Added a section about SMP Alpha systems

v0.53, 08 march 1999

  - Added a section about SMP PowerPC systems

v0.52, 07 march 1999

  - Added a section about SMP Sparc systems

v0.51, 06 march 1999

  - Added a dual-celeron section
  - Deleted Adaptec section
  - Updated procps link
  - Updated xosview link
  - Added an answer for quad Xeon boot hang
  - Updated item about glibc patch for gd: should be included in RH 5.2

v0.50, 03 february 1999

  - Updated "Multithreaded programs on linux" link

v0.49, 13 january 1999

  - Update about CONFIG_SMP. Added .txt to Documentation/smp. (Michael Elizabeth Chastain)

v0.48, 10 december 1998

  - Mispelled corrected. Email address corrected.

v0.47, 20 november 1998

  - Added that 2.0.36 as the MTRR patch (related to the BogoMips problem)

v0.46, 10 november 1998

  - Update about Epox KP6-LS motherboards

v0.45, 25 october 1998

  - Corrected an error regarding /proc/stat file
  - Added a pointer to CESDIS Ethernet Linux Drivers site

v0.44, 14 october 1998

  - Updated the link to the web page: Motherboards rumored to run Linux SMP
  - Added Jakob explanation how to time SMP systems with 2.0 kernels

v0.43, 9 september 1998

  - Updated first question in section 3.1
  - Updated mt-Mesa link: multi-threaded is now included as experimental in the Mesa distribution

v0.42, 2 september 1998

  - Minor cosmetic update in sect 3.3
  - Two links (multithreaded Mesa and SMP performance) marked outdated
  - Updated the item about threads and exceptions in C++ (sect 3.3)

v0.41, 1 september 1998

  - Added a major section: "3.3 SMP Programming" written by Jakob Østergaard
  - moved some item of section "3.2 User side" in sect 3.3

v0.40, 27 august 1998

  - Updated section 3.1, item 7: processor affinity

v0.39, 27 august 1998

  - Updated needed Award BIOS version for Tyan motherboards (hASCII)
  - Added an item on IRQ in the crash section (me and hASCII)
  - Added good support of Asus P2B-DS (Ulf Rompe)
  - Added another smp-list archive in pointer section (Hank Leininger)

v0.38, 8 august 1998

  - Added a pointer to the Linux Threads FAQ

v0.37, 30 July 1998

  - Emil Briggs is working on parallel plugins for Gimp (see "Is there any threaded programs or library?", sect. "User side")

v0.36, 26 July 1998

  - Thanks to Jakob Østergaard, two changes in "Possible causes of Crash"
    - Changed 2.0.33 to 2.0.35 (latest stable)
    - Added a "BIOS related causes of failure"

v0.35, 14 July 1998

  - Added N440BX Server Board in Motherboards with NO problems
  - Added a succes story for GigaByte motherboard with BIOS upgrade
  - Added a "How to obtain maximum performance ?" section (waiting for your contributions ;)

v0.34, 10 june 1998

  - Added a "Parallelizing/Optimizing Compilers for 586/686 machines" section in section "Useful Pointers", thanks to Sumit Roy
  - Corrected a mispelling, "Asus P/I-UP5" is in fact "Asus P/I-P65UP5"

v0.33, 3 june 1998

  - Yet another success story for a GigaByte DLX Motherboard.
  - A tip for Tyan motherboards, disable the "DRAM Fast Leadoff" BIOS option

v0.32, 27 may 1998

  - Asus P/I-UP5 added in the motherboard-with-NO-problem section

v0.31, 18 may 1998

  - Elitegroup P6LX2-A works with 2.1.100 and 101
  - Bugs should be reported to `linux-smp@vger.rutgers.edu`

v0.30, 12 may 1998

  - SuperMicro is now in the motherboard-with-NO-problem section

v0.29, 11 may 1998

  - A success story for a GigaByte 686 motherboard with 2.1.101
  - Added a new item in the "User Side" section: "Is there any threaded programs or library?"
  - OpenGL Mesa library is beeing multithreaded. Cool! See the new section for details.

v0.28, 09 may 1998

  - A US mirror of this FAQ is now available (see Introduction)
  - Merge of the two confusing Gigabyte 686 entries

v0.27, 05 may 1998

  - New info for the Adaptec and TekRam drivers
  - Micronics W6-LI motherboard works under SMP

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