More data from buildbots (before d853955491a2).

x86 Ubuntu Shared 3.x:
== Linux-2.6.31.5-linode21-i686-with-debian-lenny-sid little-endian
EpollSelector.select(99.947 ms) took 99.291 ms (granularity=1.000 ms, resolution=1.000 ms)
EpollSelector.select(99.928 ms) took 99.553 ms (granularity=1.000 ms, resolution=1.000 ms)
EpollSelector.select(499.962 ms) took 100.384 ms (granularity=1.000 ms, resolution=1.000 ms)
EpollSelector.select(398.823 ms) took 398.241 ms (granularity=1.000 ms, resolution=1.000 ms)
EpollSelector.select(9.918 ms) took 9.209 ms (granularity=1.000 ms, resolution=1.000 ms)
PollSelector.select(499.963 ms) took 101.114 ms (granularity=1.000 ms, resolution=1.000 ms)
SelectSelector.select(499.940 ms) took 101.417 ms (granularity=0.001 ms, resolution=0.001 ms)

x86 Gentoo Non-Debug 3.x
==   Linux-2.6.35-vs2.3.0.36.32-gentoo-i686-Intel-R-_Core-TM-2_CPU_6600_@_2.40GHz-with-gentoo-2.1 little-endian
[130/389] test_asyncio
EpollSelector.select(99.986 ms) took 99.796 ms (granularity=1.000 ms, resolution=1.000 ms)
EpollSelector.select(99.980 ms) took 99.346 ms (granularity=1.000 ms, resolution=1.000 ms)
EpollSelector.select(499.987 ms) took 100.093 ms (granularity=1.000 ms, resolution=1.000 ms)
EpollSelector.select(9.979 ms) took 9.573 ms (granularity=1.000 ms, resolution=1.000 ms)
PollSelector.select(499.987 ms) took 100.038 ms (granularity=1.000 ms, resolution=1.000 ms)
SelectSelector.select(499.987 ms) took 100.048 ms (granularity=0.001 ms, resolution=0.001 ms)

x86 Gentoo 3.x:
==   Linux-2.6.35-vs2.3.0.36.32-gentoo-i686-Intel-R-_Core-TM-2_CPU_6600_@_2.40GHz-with-gentoo-2.1 little-endian
[302/389/1] test_asyncio
EpollSelector.select(99.971 ms) took 99.771 ms (granularity=1.000 ms, resolution=1.000 ms)
EpollSelector.select(99.955 ms) took 99.737 ms (granularity=1.000 ms, resolution=1.000 ms)
EpollSelector.select(499.973 ms) took 100.077 ms (granularity=1.000 ms, resolution=1.000 ms)
EpollSelector.select(399.545 ms) took 399.015 ms (granularity=1.000 ms, resolution=1.000 ms)
EpollSelector.select(9.949 ms) took 9.552 ms (granularity=1.000 ms, resolution=1.000 ms)
PollSelector.select(499.973 ms) took 100.059 ms (granularity=1.000 ms, resolution=1.000 ms)
SelectSelector.select(499.973 ms) took 100.072 ms (granularity=0.001 ms, resolution=0.001 ms)

"select(499.973 ms) took 100.077" are tests on signals interrupting the select.