Emmanuel Dreyfus <m...@netbsd.org> writes: > On NetBSD-10.0/amd64 Xen domU with two vcpu PHP's uniqid() performance > is terrible. Theses two tests are on the same dom0, with same NetBSD > versions in the domU: > > With a single vcpu: > $ time php -r 'for ($i = 0; $i < 1000000; $i++) uniqid();' > 2.94s real 0.77s user 1.71s system > > With two vcpu (note this is only 100 iterations): > $ time php -r 'for ($i = 0; $i < 100; $i++) uniqid();' > 19.10s real 6.13s user 6.39s system
Have you written a test program to log and examined the return values? Is xen somehow using a timecounter that is incrementing in larger jumps?
