On 18 February, 2010 - Günther sent me these 1,1K bytes: > hello<br> > there is a new beta v. 0.220 of napp-it, the free webgui for nexenta(core) 3 > <br> > new:<br> > -bonnie benchmarks included <a href="http://www.napp-it.org/bench.png"; > target="_blank">see screenshot</a><br> > -bug fixes<br> > <br> > if you look at the benchmark screenshot:<br> > -pool daten: zfs3 of 7 x wd 2TB raid edition (WD2002FYPS), dedup and compress > enabled<br> > -pool z3ssdcache: zfs3 of 4 sas Seagate 15k/s (ST3146855SS) edition, > dedup and compress enabled + ssd read cache (supertalent ultradrive 64GB) > <br> > i was surprised about the seqential write/ rewrite result. > the wd 2 TB drives performs very well only in sequential write of characters > but are horrible bad in blockwise write/ rewrite > the 15k sas drives with ssd read cache performs 20 x better (10MB/s -> 200 > MB/s) !!!!
Most probably due to lack of ram to hold the dedup tables, which your second version "fixes" with an l2arc. Try the same test without dedup or same l2arc in both, instead of comparing apples to canoes. > <br><br> > downlaod:<br> > http://www.napp-it.org<br> > <br> > howto setup<br> > http://www.napp-it.org/napp-it.pdf<br> > <br> > > gea > -- > This message posted from opensolaris.org > _______________________________________________ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss /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
![http://www.napp-it.org/bench.png"](http://www.napp-it.org/bench.png"){kind=link}