[zfs-discuss] Re: Re: Why is ZFS raidz slower than simple ufs mount?

2006-08-17 Thread Bob Evans
First, I apologize, I listed the Antares in my original post, it was one of two scsi cards I tested with. The posted CPU snapshots were from the LSI 22320 card (mentioned below). I've tried this with two different SCSI cards. As far as I know, both are standard SCSI cards used for Suns.

[zfs-discuss] Re: Significant pauses during zfs writes

2006-08-14 Thread Bob Evans
I'm starting simple, there is no app. I have a 10GB file (called foo) on the internal FC drive, I did a zfs create raidz bar then ran cp foo /bar/, so there is no cpu activity due to an app. As a test case, this took 7 min 30 sec to copy to the zfs partition. I removed the pool,

[zfs-discuss] Re: Significant pauses during zfs writes

2006-08-14 Thread Bob Evans
As added information, top reports that cp is using about 25% of the single cpu. There are no other apps running. Bob This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org

[zfs-discuss] Re: Significant pauses during zfs writes

2006-08-14 Thread Bob Evans
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