Buggy network connection causes very low system responsiveness
Martin Sourada
martin.sourada at gmail.com
Mon Mar 24 17:08:41 UTC 2008
On Mon, 2008-03-24 at 12:52 -0400, Colin Walters wrote:
> 2008/3/24 Martin Sourada <martin.sourada at gmail.com>:
> >
> > New strace, now with the -r option disabled. I caught the dead state for
> > about 2s or so, hope it is enough.
> >
> > http://mso.fedorapeople.org/debug/gnome-terminal.log.gz (I replaced the
> > old one).
>
> 0.000047 connect(10, {sa_family=AF_FILE,
> path="/tmp/.ICE-unix/2371"}, 21) = 0
> 0.000066 fcntl64(10, F_SETFD, FD_CLOEXEC) = 0
> 0.000069 write(10, "\0\1\0\0\0\0\0\0", 8) = 8
> 0.000171 read(10, "\0\1\0\0\0\0\0\0", 8) = 8
> 8.482029 access("/home/martin/.ICEauthority", R_OK) = 0
>
> We can see here that that read() took over 8 seconds to complete.
> That read is it trying to talk via ORBit I think. Which will try to
> resolve "localhost", which if your /etc/hosts is busted will probably
> take that long to timeout.
>
> How to debug your /etc/hosts I'm not sure; maybe use the audit system
> to monitor the file. This page talks about that:
> http://www.cyberciti.biz/tips/linux-audit-files-to-see-who-made-changes-to-a-file.html
>
Thanks,
I'll edit the /etc/hosts file to see if it helps and if it gets emptied
again.
Martin
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