On 08 June, 2011 - Donald Stahl sent me these 0,6K bytes: > >> One day, the write performance of zfs degrade. > >> The write performance decrease from 60MB/s to about 6MB/s in sequence > >> write. > >> > >> Command: > >> date;dd if=/dev/zero of=block bs=1024*128 count=10000;date > > See this thread: > > http://www.opensolaris.org/jive/thread.jspa?threadID=139317&tstart=45 > > And search in the page for: > "metaslab_min_alloc_size" > > Try adjusting the metaslab size and see if it fixes your performance problem.
And if pool usage is >90%, then there's another problem (change of finding free space algorithm). /Tomas -- Tomas Ögren, st...@acc.umu.se, http://www.acc.umu.se/~stric/ |- Student at Computing Science, University of Umeå `- Sysadmin at {cs,acc}.umu.se _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
