[olug] Slow read speeds-SuSE
rob.townley at gmail.com
Thu Apr 29 06:57:58 UTC 2010
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?
> 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
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
/dev/evms/DATA 11 11 0 100%
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