Doug wrote: > When we installed the Marvell driver patch 125205-07 on our X4500 a few > months ago and it started crashing, Sun support just told us to back out that > patch. The system has been stable since then. > > We are still running Solaris 10 11/06 on that system. Is there an advantage > to using 125205-07 and the IDR you mention compared to just not using NCQ? > Better performance? If so, how much better?
Everything depends on your I/O workload. We are updating thousands of RRD files, so it's _extremely_ random, relatively small I/Os. In our case, NCQ is a huge win (about a 25% improvement, as I recall). If you do mostly sequential I/O, It will probably make only a small difference. -- Carson _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
