I'm trying to determine what's a good "baseline performance level" for my iSCSI SAN. We're seeing what we consider to be suboptimal performance, but I'm not sure where to pin the blame down -- or even if there IS any blame, maybe our metrics are in line with what people are getting for Linux iSCSI clients. Who knows.
What I'm seeing is that - if I use IOMeter as my performance testing tool (which seems to be fairly common in SAN testing), I can only get about 300-400 read IOP/s, with total throughput of about 10MB/s. Contrarily if I let IOmeter test the local disk, it's 6x faster (1900 IOP/s, 60MB/s) Now that SEEMS awful low to us. There's a number of factors that might be contributing to it (it could be a network issue, it could simply be that the SAN hardware itself is saturated for IOPS -- I tend towards that last, but unfortunately, the SAN hardware we're using has NO(!!!!) means of letting me determine what the current IOPS are on the SAN disks themselves.... crazy-talk, I tell you). Anyone out there want to share their metrics? Cheers, D _______________________________________________ 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/
