Hi, On Fri, 2011-07-22 at 12:41 +0200, Jordi Renye wrote: > We are sharing gfs2 partition through samba > to three hundred clients aprox. > > Partition GFS2 is mounted in two nodes of > cluster. > > Clients can boot in linux and windows. > > There is one share for home folder, another > for profiles, another for shared applications and > data: there is 5 shares. > > >> Also, did you mount with noatime, nodiratime? > > Yes, I'm mounting with these options. > > Jordi Renye > LCFIB - UPC > > Were the tests being run directly on gfs2, or via Samba in this case? Steve. > > El 22/07/2011 12:32, Steven Whitehouse escribió: > > Hi, > > > > On Fri, 2011-07-22 at 12:08 +0200, Jordi Renye wrote: > >> Hi, > >> > >> We have configured redhat cluster RHEL 6.1 with two nodes. > >> We have seen that performance of GFS2 on writing is > >> half of ext3 partition. > >> > >> For example, time of commands: > >> > >> time cp -Rp /usr /gfs2partition/usr > >> 0.681u 47.082s 7:01.80 11.3% 0+0k 561264+2994832io 0pf+0w > >> > >> whereas > >> > >> cp -R /usr /ext3partition/usr > >> 0.543u 24.041s 4:16.86 9.5% 0+0k 2728584+3166184io 2pf+0w > >> > >> With ping_pong tool from Samba.org we've got next results: > >> > >> Los resultados son los siguientes: > >> > >> ping_pong /gfs2partition/pingpongtestfile 3 > >> 1582 locks/sec > >> > >> With ping_pong test r/w: > >> > >> ping_pong -rw /gfs2partition/pingpongtestfile 3 > >> data increment = 2 > >> 4 locks/sec > >> > >> Do you think we can get better performance? Do you think > >> are "normal" and "good" results ? > >> > >> Which recommendations do you tell us to get better performance? > >> > >> For example, we don't have a heartbeat network exclusively, but > >> we have only one networks interface for application network and cluster > >> network. > >> Could we get better performance with one dedicated cluster network( for > >> dlm,heartbeath,...). > >> > >> Thanks in advanced, > >> > > It depends what you are trying to optimise for... what is the actual > > application that you want to run? > > > > cp doesn't use fcntl locks to the best of my knowledge, so I doubt that > > will have any particular effect on the performance. Also it would be > > quite unusual for fcntl locks to have any effect on the performance of > > the fs as a whole. > > > > Usually the most important factor is how the workload is balances > > between nodes. Also, did you mount with noatime, nodiratime? > > > > Steve. > > > > > > -- > > Linux-cluster mailing list > > Linux-cluster@xxxxxxxxxx > > https://www.redhat.com/mailman/listinfo/linux-cluster > > -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
