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[Bug runtime/6432] use 2.6.26 probe_kernel_{read,write}
- From: "joshua dot i dot stone at intel dot com" <sourceware-bugzilla at sourceware dot org>
- To: systemtap at sources dot redhat dot com
- Date: 27 May 2008 19:32:16 -0000
- Subject: [Bug runtime/6432] use 2.6.26 probe_kernel_{read,write}
- References: <20080419165120.6432.fche@redhat.com>
- Reply-to: sourceware-bugzilla at sourceware dot org
------- Additional Comments From joshua dot i dot stone at intel dot com 2008-05-27 19:32 -------
Created an attachment (id=2759)
--> (http://sourceware.org/bugzilla/attachment.cgi?id=2759&action=view)
Test the overhead of dereferencing strings
Run as 'stap -gt deref-string.stp', and add '-DTEST_DIRECT' for direct memory
access. My results on 2.6.26-rc3 x86_64:
OLD:
direct: 1725min/2072avg/10283max
deref: 1778min/2085avg/10950max
NEW:
direct: 1650min/2012avg/10613max
deref: 2152min/2476avg/12563max
--
http://sourceware.org/bugzilla/show_bug.cgi?id=6432
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