Bob Evans writes: > One last tidbit, for what it is worth. Rather than watch top, I ran > xcpustate. It seems that just as the writes pause, the cpu looks like > it hits 100% (or very close), then it falls back down to its lower > level. > > I'm still getting used to Solaris 10 as well, so if you have a DTrace > script you'd recommend me running, please feel free to suggest it. > > > This message posted from opensolaris.org > _______________________________________________ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
I had overlooked that this could be a single CPU system. For such a test the potential limiting factors can be either of: 1. storage. 2. the single cp thread burning a CPU. 3. total system CPU overload. You've already indicated that storage is not 100% busy. The cp(1) thread is not burning a CPU. And it looks like the system is not CPU saturated, right ? I'd argue that the conjunction of those 3 things somewhat points to 'a problem'. -r _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss