Disk IO issues

Mike McGrath mmcgrath at redhat.com
Fri Jan 2 18:08:35 UTC 2009


On Fri, 2 Jan 2009, Mike McGrath wrote:

> On Fri, 2 Jan 2009, Sascha Thomas Spreitzer wrote:
>
> > Hello again,
> >
> > this line looks suspicious to me:
> >
> > # name            <active_objs> <num_objs> <objsize> <objperslab>
> > <pagesperslab> : tunables <limit> <batchcount> <sharedfactor> :
> > slabdata <active_slabs> <num_slabs> <sharedavail>
> > ext3_inode_cache   98472 150260    760    5    1 : tunables   54   27
> >   8 : slabdata  30052  30052    189
> >
> > Is it 1 big filesystem with about 1,342,177,280 inodes. Has this
> > amount ever be tested in the wild?
>
> Not sure if it has been tested in the wild or not but the filesystem
> itself contains a _TON_ of hardlinks.  Creation of hardlinks is one of the
> big purposes of this filesystem.
>

Just as a side note, this is the real problem I'm trying to fix:

  Elapsed time:           17 days 15 hours 8 mins 7 secs
  Priority:               10
  FD Files Written:       9,284,599
  SD Files Written:       9,284,599
  FD Bytes Written:       4,890,877,712,334 (4.890 TB)
  SD Bytes Written:       4,892,855,186,414 (4.892 TB)
  Rate:                   3210.7 KB/s


	-Mike




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