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Bug 128549 - xen lags of performance with tls enabled glibc
Summary: xen lags of performance with tls enabled glibc
Status: RESOLVED CANTFIX
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: Current packages (show other bugs)
Hardware: All Linux
: High normal
Assignee: Chris Bainbridge (RETIRED)
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2006-04-02 11:51 UTC by Florian Manschwetus
Modified: 2006-07-29 03:32 UTC (History)
1 user (show)

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Runtime testing required: ---

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Description Florian Manschwetus 2006-04-02 11:51:18 UTC 
it is possible to get an system based solution for it?
Comment 1 Chris Bainbridge (RETIRED) gentoo-dev 2006-04-03 02:08:18 UTC 
check http://gentoo-wiki.com/HOWTO_Xen_and_Gentoo - you can either get rid of /usr/lib/tls, or recompile your system with -mno-tls-direct-seg-refs

The problem is that Xen has to trap and emulate the direct segment references, which is slow. The gcc flag tells gcc not to use those operations.
Comment 2 Jakub Moc (RETIRED) gentoo-dev 2006-07-29 03:20:19 UTC 
*** Bug 142072 has been marked as a duplicate of this bug. ***
Comment 3 Jakub Moc (RETIRED) gentoo-dev 2006-07-29 03:32:40 UTC 
*** Bug 142072 has been marked as a duplicate of this bug. ***