dsched_fq and occasional console freeze

Matthew Dillon dillon at apollo.backplane.com
Sun Oct 17 16:08:09 PDT 2010

:I wonder if this:
:is related, I did enable DSCHED_FQ via sysctl just before I ran "hammer
:cleanup" I remember now, and the symptoms are same - freeze but can switch
:between terminals, but can't actually execute any command because they are
:all "hanging", for about 5 minutes and eventually freeze completely but
:without a kernel dump.

    I think it might be.  A bug in DSCHED_FQ could cause the I/O to not
    get properly completed and stall the NFS server.

					Matthew Dillon 
					<dillon at backplane.com>

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