Bill Crawford wrote: > On 12/08/07, Ralf Corsepius <rc040203@xxxxxxxxxx> wrote: > >> SELinux is completely optional and doesn't cause functional regression. > > Stops warning or error messages from "modprobe" being logged to my X > session log (~/X.log) if I'm in enforcing mode, because of the > security context? > >> Well, actually I think Fedora is derailing due to its leadership >> committing one mistake after the other. > > That's another issue :) > > Why not default to "noatime" for all bar /tmp, and create that as a > separate partition / logical volume by default? Because nobody has shown conclusively, at least no on this thread, that noatime actually helps enough to matter, IMHO. As far as I'm concerned, nobody has done the necessary legwork to justify this change. I have at least one case where noatime actually slows things down. With 66 million inodes on an ext3 filesystem, "find" across the filesystem with a fresh mount / cold cache was a few seconds slower with noatime. Odd result, but it shows at least that this change shouldn't be made based on a hunch, but only after looking at some real results. -Eric [root@bear-05 ~]# for I in `seq 1 10` do mount /dev/sdb12 /mnt/test time find /mnt/test > /dev/null umount /dev/sdb12 done real 0m58.355s user 0m0.384s sys 0m1.212s real 0m53.485s user 0m0.400s sys 0m1.236s real 0m53.900s user 0m0.348s sys 0m1.288s real 0m53.919s user 0m0.328s sys 0m1.080s real 0m54.835s user 0m0.288s sys 0m1.316s real 0m55.544s user 0m0.348s sys 0m1.332s real 0m53.221s user 0m0.376s sys 0m1.332s real 0m54.252s user 0m0.308s sys 0m1.300s real 0m54.379s user 0m0.344s sys 0m1.192s real 0m54.430s user 0m0.364s sys 0m1.188s [root@bear-05 ~]# for I in `seq 1 10`; do mount -o noatime /dev/sdb12 /mnt/test; time find /mnt/test > /dev/null; umount /dev/sdb12; done real 0m58.461s user 0m0.380s sys 0m1.052s real 0m57.830s user 0m0.336s sys 0m1.180s real 0m57.997s user 0m0.356s sys 0m1.236s real 0m58.123s user 0m0.348s sys 0m1.228s real 0m58.565s user 0m0.352s sys 0m1.132s real 0m59.683s user 0m0.332s sys 0m1.292s real 0m58.457s user 0m0.408s sys 0m1.096s real 0m58.406s user 0m0.344s sys 0m1.240s real 0m58.678s user 0m0.332s sys 0m1.192s real 0m58.934s user 0m0.376s sys 0m1.308s -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-devel-list
