[olug] Slow read speeds-SuSE

[Craig Wolf]

Both ls and ls -latr return quick so not that... 

Main and HR_Data are the 2 volumes I am using.


Craig Wolf
Linux Server Support
Backups Administrator
Desktop/Network Specialist
Desk: (402)715-6283
Cell: (402)510-0301



>>> Rob Townley <rob.townley at gmail.com> 4/29/2010 1:57 AM >>>
On Wed, Apr 28, 2010 at 4:16 PM, Craig Wolf <CJWolf at mpsomaha.org> wrote:
> Ok, my backups from one of my linux servers takes 5 days to finish...my window is 36 hours, not working right.  Throughput of about 1.5GB/hour.
> So in my testing, copying a 158MB directory to the server takes about 1 Minute 5 seconds.  Copying same structure off the box takes almost 7 minutes.  Network switches show no issues/error.  iostat shows slow to no throughput at all on read.
>
> SO, the million dollar question is, what should I look at for fixing this??  Do I use hdparm?
>
> TIA!!
>
>
> Craig Wolf
> Linux Server Support
> Data Backups Administrator
> Desktop/Network Specialist
> Desk: (402)715-6283
> Cell: (402)510-0301
> _______________________________________________
> OLUG mailing list
> OLUG at olug.org
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>


So this backup is probably a bunch of small files.
Is this machine  or particular filesystem Active Directory joined?  In
other words, do the files on the partition have a set of permissions
that need to be accessed from a third system to determine if the user
is allowed read access?
If you notice a big difference in time between a 'ls' and a 'ls -latr'
then it may be a permission problem.
Long shot, but very simple test.

So there were two /media/ mounts, so i assume that is read only media
because there was no space left on those.  But the following (backup
pool?) is almost full as well.  Is /dev/evms/DATA where the slow data
is written?
/dev/evms/DATA            11      11       0  100%
/opt/novell/nss/mnt/.pools/DATA
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