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[Bug libc/1541] Poor threaded application performance when using malloc
- From: "sjmunroe at us dot ibm dot com" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sources dot redhat dot com
- Date: 1 Nov 2005 17:12:19 -0000
- Subject: [Bug libc/1541] Poor threaded application performance when using malloc
- References: <20051025141150.1541.sjmunroe@us.ibm.com>
- Reply-to: sourceware-bugzilla at sourceware dot org
------- Additional Comments From sjmunroe at us dot ibm dot com 2005-11-01 17:12 -------
Created an attachment (id=733)
--> (http://sourceware.org/bugzilla/attachment.cgi?id=733&action=view)
Oprofile of malloc-test 128000 1000 8 on Dual PPC64 G5
This profile show that when the MMAP_THRESHOLD is exceeded we see a big
increase in kernel time. The kernel time is associate with the locking,
schedualing, and page fault.
I don't have access to a i386 SMP box with at the moment but I suspect the
profile there will be similar.
--
http://sourceware.org/bugzilla/show_bug.cgi?id=1541
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