Hello Jürgen, Monday, June 4, 2007, 7:09:59 PM, you wrote:
>> > Patching zfs_prefetch_disable = 1 has helped >> It's my belief this mainly aids scanning metadata. my >> testing with rsync and yours with find (and seen with >> du & ; zpool iostat -v 1 ) pans this out.. >> mainly tracked in bug 6437054 vdev_cache: wise up or die >> http://www.opensolaris.org/jive/thread.jspa?messageID=42212 >> >> so to link your code, it might help, but if one ran >> a clean down the tree, it would hurt compile times. JK> I think the slowdown that I'm observing is due to the changes JK> that have been made for 6542676 "ARC needs to track meta-data JK> memory overhead". JK> There is now a limit of 1/4 of arc size ("arc_meta_limit") JK> for zfs meta-data. Not good - I have some systems with TBs of meta-data mostly. I guess there's some tunable... -- Best regards, Robert mailto:[EMAIL PROTECTED] http://milek.blogspot.com _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
