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[Bug runtime/6028] ia64_fetch_register is very slow
- From: "mhiramat at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: systemtap at sources dot redhat dot com
- Date: 3 Apr 2008 21:42:14 -0000
- Subject: [Bug runtime/6028] ia64_fetch_register is very slow
- References: <20080403153241.6028.mhiramat@redhat.com>
- Reply-to: sourceware-bugzilla at sourceware dot org
------- Additional Comments From mhiramat at redhat dot com 2008-04-03 21:42 -------
(In reply to comment #1)
> Created an attachment (id=2350)
--> (http://sourceware.org/bugzilla/attachment.cgi?id=2350&action=view)
> ia64 fast(cached) fetch_register() patch
Here is a test result with this patch.
---
access 0 flags
probe syscall.open (<input>:1:1), hits: 18, cycles: 837min/1796avg/17953max
access 1 flags
probe syscall.open (<input>:1:1), hits: 18, cycles: 1086min/1779avg/12808max
access 2 flags
probe syscall.open (<input>:1:1), hits: 19, cycles: 1167min/2778avg/21327max
access 3 flags
probe syscall.open (<input>:1:1), hits: 18, cycles: 1252min/2272avg/17831max
---
Thanks,
--
What |Removed |Added
----------------------------------------------------------------------------
Summary|ia64_fetch_register is very |ia64_fetch_register is very
|slow |slow
http://sourceware.org/bugzilla/show_bug.cgi?id=6028
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