Michael, You said slowdown, was it performing better before and slowed down?
Also where are your MD file stored? -b On Fri, May 24, 2013 at 6:06 PM, Michael Robbert <[email protected]> wrote: > We recently noticed a performance problem with our OrangeFS server. > > Here are the server stats: > 3 servers, built identically with identical hardware > > [root@orangefs02 ~]# /usr/sbin/pvfs2-server --version > 2.8.7-orangefs (mode: aio-threaded) > > [root@orangefs02 ~]# uname -r > 2.6.18-308.16.1.el5.584g0000 > > 4 core E5603 1.60GHz > 12GB of RAM > > OrangeFS is being served to clients using bmi_tcp over DDR Infiniband. > Backend storage is PanFS with 2x10Gig connections on the servers. > Performance to the backend looks fine using bonnie++. >100MB/sec write and > ~250MB/s read to each stack. ~300 creates/sec. > > On the OrangeFS clients are running kernel version 2.6.18-238.19.1.el5. > > The biggest problem I have right now is that delete are taking a long > time. Almost 1 sec per file. > > [root@fatcompute-11-32 L_10_V0.2_eta0.3_wRes_**truncerr1e-11]# find > N2/|wc -l > 137 > [root@fatcompute-11-32 L_10_V0.2_eta0.3_wRes_**truncerr1e-11]# time rm > -rf N2 > > real 1m31.096s > user 0m0.000s > sys 0m0.015s > > Similar results for file creates: > > [root@fatcompute-11-32 ]# date;for i in `seq 1 50`;do touch > file${i};done;date > Fri May 24 16:04:17 MDT 2013 > Fri May 24 16:05:05 MDT 2013 > > What else do you need to know? Which debug flags? What should we be > looking at? > I don't see any load on the servers and I've restarted server and rebooted > server nodes. > > Thanks for any pointers, > Mike Robbert > Colorado School of Mines > > > _______________________________________________ > Pvfs2-users mailing list > [email protected] > http://www.beowulf-underground.org/mailman/listinfo/pvfs2-users > >
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