On Thu, Jul 25, 2013 at 11:17 AM, Jens Axboe <axboe@xxxxxxxxx> wrote: > Please don't top post... > > On 07/25/2013 11:27 AM, Matthew Eaton wrote: >> Hi Jens, >> >> I'm running Ubuntu 12.04.2, my kernel is: >> >> Linux matt-work 3.5.0-36-generic #57~precise1-Ubuntu SMP Thu Jun 20 >> 18:21:09 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux >> >> Here is the output I got from blktrace / blkparse: >> >> Total (sdb): >> Reads Queued: 166, 664KiB Writes Queued: >> 3001, 12004KiB >> Read Dispatches: 166, 664KiB Write Dispatches: >> 3001, 12004KiB >> Reads Requeued: 0 Writes Requeued: 0 >> Reads Completed: 166, 664KiB Writes Completed: >> 3001, 1500KiB >> Read Merges: 0, 0KiB Write Merges: >> 0, 0KiB >> PC Reads Queued: 0, 0KiB PC Writes Queued: >> 0, 0KiB >> PC Read Disp.: 22, 3KiB PC Write Disp.: >> 0, 0KiB >> PC Reads Req.: 0 PC Writes Req.: 0 >> PC Reads Compl.: 10 PC Writes Compl.: 0 >> IO unplugs: 166 Timer unplugs: 0 > > That looks fine, it might just be coincidence that you are capped at > ~100 IOPS. I don't think it's that unlikely that the this is the limit > for you, your device might have a fixed overhead associated with a trim > request. I'd have to look closer at your system to see if that's the > case or not. > > -- > Jens Axboe > Sorry, I'm kind of new to mailing lists. I'll test some different drive / system configurations next. Thanks for your help! -- To unsubscribe from this list: send the line "unsubscribe fio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
