this is great, i remember reading about this. Wow, it sure did take awhile huh? Glad they finally got it working for you. What exactly caused this bug? If i remember right it wasn't just related to solaris. I remember seeing the same behavior in FreeBSD.
On Wed, Dec 16, 2009 at 8:42 PM, Bob Friesenhahn < bfrie...@simple.dallas.tx.us> wrote: > Some of you may recall my complaints in July about very poor Solaris 10 > performance when re-reading large collections of medium-sized (5MB) files, > and recall verifying the situation on your own systems (including > OpenSolaris). I now have an IDR installed under Solaris 10U8 which includes > a fix for this problem. I am told that the fix will likely appear within > the next month or two as a Solaris 10 kernel patch. > > While first-read performance has not improved, the re-read performance > improvement due to the fix is quite dramatic: > > U8 Baseline (Generic_141445-09) > =============================== > > Doing initial (unmount/mount) 'cpio -C 131072 -o > /dev/null' > 144000768 blocks > > real 8m35.46s > user 0m4.21s > sys 1m16.30s > > Doing second 'cpio -C 131072 -o > /dev/null' > 144000768 blocks > > real 35m35.85s > user 0m4.66s > sys 1m25.63s > > U8 + IDR143158-03 > ================= > > Doing initial (unmount/mount) 'cpio -C 131072 -o > /dev/null' > 144000768 blocks > > real 8m39.18s > user 0m4.47s > sys 1m26.90s > > Doing second 'cpio -C 131072 -o > /dev/null' > 144000768 blocks > > real 8m36.04s > user 0m4.46s > sys 1m19.58s > > Bob > -- > Bob Friesenhahn > bfrie...@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/ > GraphicsMagick Maintainer, http://www.GraphicsMagick.org/ > _______________________________________________ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss >
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