Ross wrote: > Can anybody tell me how to measure the raw performance of a new system I'm > putting together? I'd like to know what it's capable of in terms of IOPS and > raw throughput to the disks. > > I've seen Richard's raidoptimiser program, but I've only seen results for > random read iops performance, and I'm particularly interested in write > performance. That's because the live server will be fitted with 512MB of > nvram for the ZIL, and I'd like to see what effect that actually has. >
Cool. Yes, RAIDoptimizer's performance model is trivially simple because it uses disk datasheet specifications, not measured data. There is a lot of work being measured by filebench, which should be installed for you in /usr/benchmarks > The disk system will be serving NFS to VMware to act as the datastore for a > number of virtual machines. I plan to benchmark the individual machines to > see what kind of load they put on the server, but I need the raw figures from > the disk to get an idea of how many machines I can serve before I need to > start thinking bigger. > > I'd also like to know if there's any easy way to see the current performance > of the system once it's in use? I know VMware has performance monitoring > built into the console, but I'd prefer to take figures directly off the > storage server if possible. > Something like NFSstat is probably the best indicator from the client perspective. -- richard _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
