> > I have the feeling somthing is not good in my setup as it seems the > > performance looks as if it can be better. > > The setup: quadcore (Q9450) @ 2,1GHz with 8GB ram. > > On the server I run nbd-server and nbd-client via localhost. > > The nbd-server has a sparse file of 10GB in a ramdisk (tmpfs). > > Now when I create an ext2 filesystem (no journal overhead) and run > > iozone I get the following values: > > random random bkwd > > record > > KB reclen write rewrite read reread read write read > > rewrite > > 2097152 256 601977 699077 930964 932460 928055 706410 1011458 > > 814914
(localhost) > > Compare that with iozone directly in the ramdisk: > > random random bkwd > > record > > KB reclen write rewrite read reread read write read > > rewrite > > 2097152 256 1497485 2211397 3293086 3318772 3231160 2267725 3268985 > > 4805781 > > > > Quit a large difference isn't it? > That comparison involves nbd-server running on localhost, I presume? That's correct. The system is idle apart from nbd-client/server. Folkert van Heusden -- MultiTail is een flexibele tool voor het volgen van logfiles en uitvoer van commando's. Filteren, van kleur voorzien, mergen, 'diff-view', etc. http://www.vanheusden.com/multitail/ ---------------------------------------------------------------------- Phone: +31-6-41278122, PGP-key: 1F28D8AE, www.vanheusden.com ------------------------------------------------------------------------------ Learn how Oracle Real Application Clusters (RAC) One Node allows customers to consolidate database storage, standardize their database environment, and, should the need arise, upgrade to a full multi-node Oracle RAC database without downtime or disruption http://p.sf.net/sfu/oracle-sfdevnl _______________________________________________ Nbd-general mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/nbd-general
