On Mon, 2011-12-05 at 19:42 +0000, Arthur Dent wrote: > On Mon, 2011-12-05 at 18:08 +0530, Soham Chakraborty wrote: snip > > So the long boot times (c. 2 mins) seem to be random, given no changes > in configuration. > > I looked at dmesg. I am no expert in what dmesg tells me, but here is > the last few lines of one of the long boots: > > ===============8<==================================== > [root@localhost ~]# dmesg > [ snip ] > [ 32.248789] e1000e 0000:00:19.0: em1: 10/100 speed: disabling TSO > [ 32.248955] ADDRCONF(NETDEV_CHANGE): em1: link becomes ready > [ 42.354015] em1: no IPv6 routers present > [ 90.858903] SELinux: initialized (dev 0:21, type nfs4), uses genfs_contexts > [ 90.863622] SELinux: initialized (dev 0:22, type nfs4), uses genfs_contexts > [ 90.867429] SELinux: initialized (dev 0:23, type nfs4), uses genfs_contexts > [ 90.868787] SELinux: initialized (dev 0:24, type nfs4), uses genfs_contexts > [ 90.872920] SELinux: initialized (dev 0:22, type nfs4), uses genfs_contexts > [ 90.877188] SELinux: initialized (dev 0:25, type nfs4), uses genfs_contexts > [ 90.878883] mount[998]: mount.nfs: /mnt/NFSmark is busy or already mounted > [ 90.887451] SELinux: initialized (dev 0:22, type nfs4), uses genfs_contexts > [ 90.927896] SELinux: initialized (dev 0:21, type nfs4), uses genfs_contexts > [ 90.932400] SELinux: initialized (dev 0:22, type nfs4), uses genfs_contexts > [ 92.714872] [drm:drm_debugfs_create_files] *ERROR* Cannot create /sys/kernel/debug/dri/channel\xfffffff0i\xffffff80]\xffffffc0\x03/3 > [ 95.940096] [drm:drm_debugfs_create_files] *ERROR* Cannot create /sys/kernel/debug/dri/channel\xffffffe9i\xffffff80]\xffffffc0\x03/3 > [root@localhost ~]# > > ===============8<==================================== > On the successful boots dmesg ends with the "no IPv6 routers present" > line at around 44s. > > What is this telling me and how do I fix it? Dumb question - but how do I read the above dmesg output? i.e. does the timestamp refer to the time that task started or the time it completed? I guess what I am asking is wast it the "em1: no IPv6 routers present" that took 48 seconds or was it the SELinux line that was the culprit? Apologies for asking such an elementary question but google turned up lots of stuff about dmesg, but no answer to this specific question. And further... How do I fix it! Thanks again for the help so far... Mark
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