On Thu, Jan 1, 2015 at 1:01 AM, Ming Lei <tom.leiming@xxxxxxxxx> wrote: > Hi Sedat, > > On Thu, Jan 1, 2015 at 6:32 AM, Sedat Dilek <sedat.dilek@xxxxxxxxx> wrote: >> Forgot to CC LKML and linux-fsdevel. >> >> - Sedat - > >> >> OK, I have installed fio (1.59-1) and libaio1 (0.3.109-2ubuntu1) here. >> >> You say in [1]: >> >> "In the following test: >> - base: v3.19-rc2-2041231 >> - loop over file in ext4 file system on SSD disk >> - bs: 4k, libaio, io depth: 64, O_DIRECT, num of jobs: 1 >> - throughput: IOPS" >> >> I tried to reproduce that inspired by [2]... >> >> root# fio --name=randread --rw=randread --bs=4k --ioengine=libaio >> --iodepth=64 --direct=1 --numjobs=1 --size=1G >> >> ...you had no size given (here: 1GiB) - fio requires that parameter to run. >> >> This results in 165 VS. 515 IOPS here. > > Thanks for your test. > > Also if your disk is quick enough, you will observe improvement on > read test too. > This is no SSD here. # dmesg | egrep -i 'hitachi|ata1|sda' [ 0.457892] ata1: SATA max UDMA/133 abar m2048@0xf0708000 port 0xf0708100 irq 25 [ 0.777445] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300) [ 0.778759] ata1.00: ATA-8: Hitachi HTS545050A7E380, GG2OA6C0, max UDMA/133 [ 0.778778] ata1.00: 976773168 sectors, multi 16: LBA48 NCQ (depth 31/32), AA [ 0.780154] ata1.00: configured for UDMA/133 [ 0.780970] scsi 0:0:0:0: Direct-Access ATA Hitachi HTS54505 A6C0 PQ: 0 ANSI: 5 [ 0.782050] sd 0:0:0:0: [sda] 976773168 512-byte logical blocks: (500 GB/465 GiB) [ 0.782058] sd 0:0:0:0: [sda] 4096-byte physical blocks [ 0.782255] sd 0:0:0:0: [sda] Write Protect is off [ 0.782262] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00 [ 0.782339] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 0.800644] sda: sda1 sda2 sda3 [ 0.802029] sd 0:0:0:0: [sda] Attached SCSI disk How did you test with fio (your fio lines)? - Sedat - >> # grep "iops=" test-* >> test-1-next20141231.txt: read : io=1024.0MB, bw=678578 B/s, iops=165 >> , runt=1582340msec >> test-2-next20141231-block-mq-v3.txt: read : io=1024.0MB, >> bw=2063.4KB/s, iops=515 , runt=508182msec >> >> Full fio-logs and some other useful configs/logs/patches attached. >> >> - Sedat - >> >> [1] http://marc.info/?l=linux-kernel&m=142003220301459&w=2 >> [2] http://wiki.mikejung.biz/Benchmarking#Fio_Random_Write_Test_using_libaio_and_direct_flags > > > > Thanks, > Ming Lei -- 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
