On Wednesday 21 January 2009, nate wrote: > Renato de Oliveira Diogo wrote: > > Hi; > > > > Do you test in other file system? Like xfs or jfs? > > You can use the "time" command to get the exate time: > > # time cp /pathsource/file8g /pathdest/ > > > > Post here yours results. > > I like to use rsync with --progress so it shows realtime > updates on the status of the copy when testing performance > like that. > > But I agree that the file system likely will not have a > noticeable overhead with regards to copy performance on > single 8GB files, now 10,000 files that take up 8GB of > space I can see a file system having a performance impact.
I disagree. On most raid-controllers we use XFS has a significant advantage over Ext3 when it comes to large sequential writes. Ext3 gets nowhere near the bare metal performance. So, in short, I think it will be interesting to see how Ext4 performs for this. /Peter
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