Mailinglist Archive: opensuse-bugs (3542 mails)

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[Bug 715854] Segmentation fault in xmlmerge when building a package

https://bugzilla.novell.com/show_bug.cgi?id=715854

https://bugzilla.novell.com/show_bug.cgi?id=715854#c8


--- Comment #8 from Bernhard Wiedemann <bwiedemann@xxxxxxxx> 2011-09-04
11:08:36 CEST ---
as the patch was about vdso / vsyscall, I tried something that does many
syscalls without other bottlenecks:

on 3.1.0-rc4
with new vdso patch:
dd if=/dev/zero of=/dev/null bs=1 count=100000000
100000000+0 records in
100000000+0 records out
100000000 bytes (100 MB) copied, 35.7206 s, 2.8 MB/s

without new vdso patch:
dd if=/dev/zero of=/dev/null bs=1 count=100000000
100000000+0 records in
100000000+0 records out
100000000 bytes (100 MB) copied, 34.0184 s, 2.9 MB/s

and found that the speed is the same or even slightly faster without the patch
(at least in KVM on core-i7) - both do roughly six million syscalls per second.

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