On 5/17/13 5:39 PM, Chris Murphy wrote: > > On May 17, 2013, at 3:53 PM, Eric Sandeen <sand...@redhat.com> wrote: > >>>> On Thu, 16.05.13 12:20, Chris Murphy (li...@colorremedies.com) wrote: >>>> >>>>> There have been no crashes, so ext4 doesn't need fsck on every boot: >>>>> >>>>> 4.051s systemd-fsck-root.service >>>>> 515ms >>>>> >>>>> systemd-fsck@dev-disk-by\x2duuid-09c66d01\x2d8126\x2d39c2\x2db7b8\x2d25f14cbd35af.service > > >> When it took 4s above, was that a from a clean reboot (i.e. was the journal >> dirty?) > > Clean. And it's a new file system, created within the hour of the time test. > I also don't understand why there are two instances. There's only one ext4 > file system on the computer.
Can't imagine why it takes 4s then, need finer-grained tracing I guess... If I "e2fsck" a clean fs here it takes about 0.1s. Most of its time is spent in read(); several reads get about 100k of data from the device, and that's about it. As a sanity check I suppose you could try e2fsck from a rescue environment and see if it still takes that long, or of there is other overhead / interaction slowing it down. -Eric > > Chris Murphy > -- devel mailing list devel@lists.fedoraproject.org https://admin.fedoraproject.org/mailman/listinfo/devel
