FYI - in our testing with the older 910 series we also saw about 40K IOPS per stream with LIO - this scales up with multiple streams. Regards, Alex On Wed, May 13, 2015 at 9:18 PM, Suresh Rajagopalan <sraja97@xxxxxxxxx> wrote: > I should add this is over 10G ethernet. > > > > On Wed, May 13, 2015 at 6:03 PM, Suresh Rajagopalan <sraja97@xxxxxxxxx> wrote: >> I have a Intel DC3700 800G Pcieflash which I'm trying to benchmark >> with LIO. I see a discrepancy in fio benchmarks on this devices when >> running directly (/dev/nvme0n1) and when running via iscsi. >> >> The following fio file produces about 400k iops on 100% read. A >> identical fio file run over a ISCSI device to LIO where the backstore >> is the same flash /dev/nvme0n1 produces about 40k iops. >> >> Is there something I am missing? The queue depth is 32, but the >> numbers do not change even when bumped upto 128. >> >> Thanks for the help >> Suresh >> >> >> ---------------------------- >> >> [global] >> description=Emulation of Intel IOmeter File Server Access Pattern >> filename=/dev/nvme0n1 >> [iometer] >> bssplit=4k/100 >> rw=randread >> direct=1 >> size=18000m >> ioengine=libaio >> >> iodepth_batch=4 >> iodepth_batch_complete=32 >> numjobs=64 > -- > To unsubscribe from this list: send the line "unsubscribe target-devel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe target-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
