Bug 240981 - Add cmdline for early setting of processor affinity
Summary: Add cmdline for early setting of processor affinity
Keywords:
Status: CLOSED WONTFIX
Alias: None
Product: Red Hat Enterprise Linux 4
Classification: Red Hat
Component: initscripts
Version: 4.5
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
: ---
Assignee: Bill Nottingham
QA Contact: Brock Organ
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2007-05-23 15:21 UTC by Graham Biswell
Modified: 2014-08-15 01:43 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2007-05-23 17:21:35 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)
Patch for rc.sysinit (760 bytes, patch)
2007-05-23 15:21 UTC, Graham Biswell 		no flags Details | Diff
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Description Graham Biswell 2007-05-23 15:21:46 UTC 
As bug 203359, but for RHEL4.

This will allow default_affinity= to be set to a bitmask (lowest bit = cpu 0,
and so on).

Examples:
default_affinity=0x1  (cpu 0 only)
default_affinity=0x3  (cpu 0 and 1 only)
default_affinity=0x00002 (cpu 1 only)

note that taskset ignores bits not corresponding to logical CPUs.  Thus
0x00000001 is valid even on a 2-way system.

Patch attached. 
Caveat with this patch is that /usr has to reside in the root filesystem.
Comment 1 Graham Biswell 2007-05-23 15:21:46 UTC 
Created attachment 155259 [details]
Patch for rc.sysinit
Comment 2 Bill Nottingham 2007-05-23 17:05:32 UTC 
taskset needs moved to /bin if we want to do this. NAK for now.
Comment 3 RHEL Program Management 2007-05-23 17:21:35 UTC 
Development Management has reviewed and declined this request.  You may appeal
this decision by reopening this request.
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