Messages in this thread |  | | Date | Wed, 18 Sep 2002 12:04:47 -0400 | From | Benjamin LaHaise <> | Subject | Re: [RFC] [PATCH] 2.5.35 patch for making DIO async |
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On Wed, Sep 18, 2002 at 08:58:22AM -0700, Badari Pulavarty wrote: > Thanks for looking at the patch. Patch needed few cleanups to get it > working. Here is the status so far.. > > 1) I tested synchronous raw read/write. They perform almost same as > without this patch. I am looking at why I can't match the performance. > (I get 380MB/sec on 40 dd's on 40 disks without this patch. > I get 350MB/sec with this patch).
Hmm, we should try to improve that. Have you tried profiling a long run?
> 2) wait_on_sync_kiocb() needed blk_run_queues() to make regular read/ > write perform well.
That should be somewhat conditional, but for now it sounds like the right thing to do.
> 3) I am testing aio read/writes. I am using libaio.0.3.92. > When I try aio_read/aio_write on raw device, I am get OOPS. > Can I use libaio.0.3.92 on 2.5 ? Are there any interface > changes I need to worry between 2.4 and 2.5 ?
libaio 0.3.92 should work on 2.5. Could you send me a copy of the decoded Oops?
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