Also, It would be interesting to know "data.replication" setting you have for this benchmark?
On Sun, Jan 3, 2010 at 8:51 AM, Andreas Kostyrka <[email protected]>wrote: > Well, that all depends on many details, but: > > -) are you really using 4 discs (configured correctly as data > directories?) > > -) What hdd/connection technology? > > -) And 77MB/s would match up curiously well with 1Gbit networking cards? > So you sure that you are testing a completely local setup? Where's your > name node running then? > > Andreas > > > Am Sonntag, den 03.01.2010, 00:54 +0200 schrieb Stas Oskin: > > Hi. > > > > Can anyone advice on the subject below? > > > > Thanks! > > > > On Mon, Dec 28, 2009 at 9:01 PM, Stas Oskin <[email protected]> > wrote: > > > > > Hi. > > > > > > Going back to the subject, has anyone ever bench-marked small (10 - 20 > > > node) HDFS clusters? > > > > > > I did my own speed checks, and it seems I can reach ~77Mbps, on a > quad-disk > > > node. This comes to ~19Mbps per disk, which seems quite low in my > opinion. > > > > > > Can anyone advice about this? > > > > > > Thanks. > > > > > -- ~Rajesh.B
