2009/6/29 Wu Fengguang <fengguang.wu@xxxxxxxxx>: > On Mon, Jun 29, 2009 at 10:43:48PM +0800, Ronald Moesbergen wrote: >> 2009/6/29 Wu Fengguang <fengguang.wu@xxxxxxxxx>: >> > On Mon, Jun 29, 2009 at 09:13:27PM +0800, Wu Fengguang wrote: >> >> On Mon, Jun 29, 2009 at 09:04:57PM +0800, Vladislav Bolkhovitin wrote: >> >> > Wu Fengguang, on 06/29/2009 04:54 PM wrote: >> >> > > >> >> > > Why not 2.6.30? :) >> >> > >> >> > We started with 2.6.29, so why not complete with it (to save additional >> >> > Ronald's effort to move on 2.6.30)? >> >> >> >> OK, that's fair enough. >> > >> > btw, I backported the 2.6.31 context readahead patches to 2.6.29, just >> > in case it will help the SCST performance. >> > >> > Ronald, if you run context readahead, please make sure that the server >> > side readahead size is bigger than the client side readahead size. >> >> I tried this patch on a vanilla kernel and no other patches applied, >> but it does not seem to help. The iSCSI throughput does not go above >> 60MB/s. (1GB in 17 seconds). I have tried several readahead settings >> from 128KB up to 4MB and kept the server readahead at twice the client >> readahead, but it never comes above 60MB/s. This is using SCST on the > > OK, thanks for the tests anyway! You're welcome. >> serverside and openiscsi on the client. I get much better throughput >> (90 MB/s) when using the patches supplied with SCST, together with the > > What do you mean by "patches supplied with SCST"? These: http://scst.svn.sourceforge.net/viewvc/scst/trunk/scst/kernel/ Regards, Ronald. -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
