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@suse.com> 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. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.