In the process of trying to debug some latency on my NFS server, I set some settings in /etc/system that were mentioned over on Solaris Internals (specifically, http://www.solarisinternals.com/wiki/index.php/Application_Specific_Tuning#NFS_Server). Around the time when our backups started, our server stopped responding. Hooray!
The T2000 in question has 8GB of RAM, and I believe 4 cores. We use EMC Networker for backup software; however, I imagine one of these new settings are to blame. /etc/default/nfs now has: NFSD_SERVERS=1024 (whereas before it was 16) My /etc/system: set zfs:zfs_arc_max=4294967296 set ipge:ipge_tx_syncq=1 set ipge:ipge_taskq_disable=1 set ncsize=1048576 (The last 3 are new) clh-1-r> sar -f /var/adm/sa/sa09 -g SunOS clh-1 5.10 Generic_137111-07 sun4v 03/09/2010 00:00:00 pgout/s ppgout/s pgfree/s pgscan/s %ufs_ipf 21:30:01 0.02 0.02 0.02 0.00 0.00 21:35:00 0.02 0.03 0.03 0.00 0.00 21:40:00 0.02 0.03 0.03 0.00 0.00 21:45:00 0.02 0.03 0.03 0.00 0.00 21:50:00 0.03 0.04 0.04 0.00 0.00 21:55:00 0.03 0.03 0.03 0.00 0.00 22:00:01 5.46 76.71 99.42 48047.11 0.00 clh-1-r> sar -f /var/adm/sa/sa09 -w SunOS clh-1 5.10 Generic_137111-07 sun4v 03/09/2010 00:00:00 swpin/s bswin/s swpot/s bswot/s pswch/s 21:30:01 0.00 0.0 0.00 0.0 4190 21:35:00 0.00 0.0 0.00 0.0 25844 21:40:00 0.00 0.0 0.00 0.0 29915 21:45:00 0.00 0.0 0.00 0.0 32873 21:50:00 0.00 0.0 0.00 0.0 104201 21:55:00 0.00 0.0 0.00 0.0 108556 22:00:01 0.00 0.0 0.00 0.0 102299 One thing I should do as a (somewhat) new Solaris admin, is get more familiar with these benchmarks. Is there a book in particular that anyone recommends? My guess is the ncsize parameter is to blame here; I honestly am not 100% though. Is there anything else I should be looking at? /var/adm/messages has nothing good for me. And, does anyone have good NFS server tuning advice they'd like to share? - Pat _______________________________________________ Tech mailing list [email protected] http://lopsa.org/cgi-bin/mailman/listinfo/tech This list provided by the League of Professional System Administrators http://lopsa.org/
