From b811e75bf5f2aff49db783b5ecb0aaa21a4f3a70 Mon Sep 17 00:00:00 2001 From: Thomas Schwinge Date: Tue, 22 Feb 2011 09:46:17 +0100 Subject: hurd/faq/smp: Add some more links, and rationale. --- hurd/faq/smp.mdwn | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) (limited to 'hurd') diff --git a/hurd/faq/smp.mdwn b/hurd/faq/smp.mdwn index e48b6b66..af748454 100644 --- a/hurd/faq/smp.mdwn +++ b/hurd/faq/smp.mdwn @@ -1,4 +1,4 @@ -[[!meta copyright="Copyright © 2009 Free Software Foundation, Inc."]] +[[!meta copyright="Copyright © 2009, 2011 Free Software Foundation, Inc."]] [[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable id="license" text="Permission is granted to copy, distribute and/or modify this @@ -12,6 +12,14 @@ License|/fdl]]."]]"""]] The Hurd servers themselves are multithreaded, so they should be able to take benefit of the parallelism brought by SMP/Multicore boxes. This has however never been tested yet because of the following. -Mach used to be running on SMP boxes like the [[http://en.wikipedia.org/wiki/Intel_iPSC/860 | iPSC 860]], so has an infrastructure for running on them. It has however not (yet) been ported to nowadays' SMP standards like ACPI etc. The plan is to try Xen SMP support first. +[[microkernel/Mach]] used to be running on SMP boxes like the [[!wikipedia +Intel_iPSC/860]], so principally has the required infrastructure. It has +however not yet been enhanced to support nowadays' SMP standards like ACPI, +etc. Also, [[GNU Mach|microkernel/mach/gnumach]]'s Linux device driver glue +code likely isn't SMP-safe. As this glue code layer is not used in the +[[microkernel/mach/gnumach/ports/Xen]] port of GNU Mach, the plan is to try it +in this enviroment first. + +[[!tag open_issue_gnumach open_issue_xen]] That is why for now GNU/Hurd will only uses one logical processor (i.e. one core or one thread, depending on the socket type). -- cgit v1.2.3 From fee874eec9933d1eaaf8fe19a0a51202604ba06b Mon Sep 17 00:00:00 2001 From: Thomas Schwinge Date: Tue, 22 Feb 2011 09:48:31 +0100 Subject: hurd/faq/smp -> faq/smp. This is a general GNU/Hurd system question. --- faq/smp.mdwn | 25 +++++++++++++++++++++++++ hurd/faq/smp.mdwn | 25 ------------------------- 2 files changed, 25 insertions(+), 25 deletions(-) create mode 100644 faq/smp.mdwn delete mode 100644 hurd/faq/smp.mdwn (limited to 'hurd') diff --git a/faq/smp.mdwn b/faq/smp.mdwn new file mode 100644 index 00000000..af748454 --- /dev/null +++ b/faq/smp.mdwn @@ -0,0 +1,25 @@ +[[!meta copyright="Copyright © 2009, 2011 Free Software Foundation, Inc."]] + +[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable +id="license" text="Permission is granted to copy, distribute and/or modify this +document under the terms of the GNU Free Documentation License, Version 1.2 or +any later version published by the Free Software Foundation; with no Invariant +Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license +is included in the section entitled [[GNU Free Documentation +License|/fdl]]."]]"""]] + +[[!meta title="Does GNU/Hurd support SMP/Multicore?"]] + +The Hurd servers themselves are multithreaded, so they should be able to take benefit of the parallelism brought by SMP/Multicore boxes. This has however never been tested yet because of the following. + +[[microkernel/Mach]] used to be running on SMP boxes like the [[!wikipedia +Intel_iPSC/860]], so principally has the required infrastructure. It has +however not yet been enhanced to support nowadays' SMP standards like ACPI, +etc. Also, [[GNU Mach|microkernel/mach/gnumach]]'s Linux device driver glue +code likely isn't SMP-safe. As this glue code layer is not used in the +[[microkernel/mach/gnumach/ports/Xen]] port of GNU Mach, the plan is to try it +in this enviroment first. + +[[!tag open_issue_gnumach open_issue_xen]] + +That is why for now GNU/Hurd will only uses one logical processor (i.e. one core or one thread, depending on the socket type). diff --git a/hurd/faq/smp.mdwn b/hurd/faq/smp.mdwn deleted file mode 100644 index af748454..00000000 --- a/hurd/faq/smp.mdwn +++ /dev/null @@ -1,25 +0,0 @@ -[[!meta copyright="Copyright © 2009, 2011 Free Software Foundation, Inc."]] - -[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable -id="license" text="Permission is granted to copy, distribute and/or modify this -document under the terms of the GNU Free Documentation License, Version 1.2 or -any later version published by the Free Software Foundation; with no Invariant -Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license -is included in the section entitled [[GNU Free Documentation -License|/fdl]]."]]"""]] - -[[!meta title="Does GNU/Hurd support SMP/Multicore?"]] - -The Hurd servers themselves are multithreaded, so they should be able to take benefit of the parallelism brought by SMP/Multicore boxes. This has however never been tested yet because of the following. - -[[microkernel/Mach]] used to be running on SMP boxes like the [[!wikipedia -Intel_iPSC/860]], so principally has the required infrastructure. It has -however not yet been enhanced to support nowadays' SMP standards like ACPI, -etc. Also, [[GNU Mach|microkernel/mach/gnumach]]'s Linux device driver glue -code likely isn't SMP-safe. As this glue code layer is not used in the -[[microkernel/mach/gnumach/ports/Xen]] port of GNU Mach, the plan is to try it -in this enviroment first. - -[[!tag open_issue_gnumach open_issue_xen]] - -That is why for now GNU/Hurd will only uses one logical processor (i.e. one core or one thread, depending on the socket type). -- cgit v1.2.3