Is the filer more then 80% full? Is it slow for writes and reads or just writes? How slow is slow and what do you expect "fast" to be?
Are you seeing lots of metadata or data misses? If you go into analytics and select ARC Accesses broken down by hit/miss then select metadata misses broken down by l2arc eligibility this should give you a hint if your filer needs more l2arc to support the additional metadata load of all those files. -Alex On Wed, 2011-08-17 at 17:14 -0500, Patrick M. Landry wrote: > I have an Oracle 7310 Unified Storage NAS that we have been > fairly happy with. We are using it for hosting both NFS shares and > iSCSI targets. About 2-3 months ago the NFS performance on > our CentOS5 NFS clients to a particular share on the 7310 slowed > down considerably. Performance for other NFS shares from the > same clients is still good. > > The main difference with the poorly performing share is that there > are over 7000 subdirectories in the directory which is heavily > referenced > by the application. Also, about 2-3 months ago is a fair estimate > of when the number of subdirectories increased substantially. > > I know there are others on this list which have these Unified Storage > boxes and I am hoping someone will have run into this before. I do > have a support case open with Oracle but their first line of action > was > to ask me to upgrade to the latest firmware before they could look at > the problem. That will have to wait a couple of days for a maintenance > window. > > Additional details: > The CentOS 5 clients are Xen DomU virtual machines on a CentOS 5 > Dom0 host. > > I have installed a Solaris 11 DomU virtual machine on the same CentOS > 5 Dom0 host and the performance from that Solaris VM to the problem > 7310 share is very good. > > TIA > > -- > patrick > > > _______________________________________________ > Tech mailing list > [email protected] > https://lists.lopsa.org/cgi-bin/mailman/listinfo/tech > This list provided by the League of Professional System Administrators > http://lopsa.org/ _______________________________________________ Tech mailing list [email protected] https://lists.lopsa.org/cgi-bin/mailman/listinfo/tech This list provided by the League of Professional System Administrators http://lopsa.org/
