Hi, Jeff:
Thanks for your quickly suggestion and response~
We will add -e param to include flush time in the calculation, and
write a larger file to avoid using
the machine's memory.
Thank you very much! :)
Best Regards,
Anny
2011/5/18 Jeff Wu <cpwu@xxxxxxxxxxxxx>:
>
> Hi AnnyRen,
>
> with the test results , run a 1G data at your ceph cluster ,
> should be about 100M/sec.
> maybe,iozone test results didn't include iozone flush time.
>
> Could you list your hardware platform infos ?
> network:1G,4G,8G,FC ...?,cpu,memory:size ? ,disk:PATA,SATA,SAS,SSD ??
> and
> could you try other iozone commands ,for instance :
>
> 1)
> add "-e" param to include flush(fsync,fflush) in the timing
> calculations.
>
> /usr/bin/iozone -azcR -e -f /mnt/ceph/test0516.dbf \
> -g 1G -b /exceloutput0516.xls
>
> 2)run a large data which size is your host memory size*2:
>
> $./iozone -z -c -e -a -n 512M -g {memory_size}*2M -i 0 -i 1 -i 2 \
> -f /mnt/ceph/fio -Rb ./iozone.xls
>
> or
> 2)
> !/bin/sh
>
> for i in 32 64 128 256
> do
> ./iozone -r ${i}k -t 10 -s 4096M -i 0 -i 1 -i 2 \
> -F /mnt/ceph/F1 /mnt/ceph/F2 /mnt/ceph/F3 /mnt/ceph/F4 /mnt/ceph/F5 /mnt/ceph/F6 /mnt/ceph/F7 /mnt/ceph/F8 /mnt/ceph/F9 /mnt/ceph/F10
> done
>
>
>
>
> Jeff
>
>
>
>
>
>
> On Tue, 2011-05-17 at 15:34 +0800, AnnyRen wrote:
>> Hi, Jeff:
>>
>> I run "ceph osd tell osd_num bench" with 1 times per osd
>>
>> and use ceph -w to observe every osd performance,
>>
>> osd0: [INF] bench: wrote 1024 MB in blocks of 4096 KB in 10.875844
>> sec at 96413 KB/sec
>> osd1: [INF] bench: wrote 1024 MB in blocks of 4096 KB in 11.784985
>> sec at 88975 KB/sec
>> osd2: [INF] bench: wrote 1024 MB in blocks of 4096 KB in 11.161067
>> sec at 93949 KB/sec
>> osd3: [INF] bench: wrote 1024 MB in blocks of 4096 KB in 10.798796
>> sec at 97101 KB/sec
>> osd4: [INF] bench: wrote 1024 MB in blocks of 4096 KB in 14.437141
>> sec at 72630 KB/sec
>> osd5: [INF] bench: wrote 1024 MB in blocks of 4096 KB in 14.451444
>> sec at 72558 KB/sec
>> osd6: [INF] bench: wrote 1024 MB in blocks of 4096 KB in 11.083872
>> sec at 94603 KB/sec
>> osd7: [INF] bench: wrote 1024 MB in blocks of 4096 KB in 11.062728
>> sec at 94784 KB/sec
>> osd8: [INF] bench: wrote 1024 MB in blocks of 4096 KB in 14.137312
>> sec at 74170 KB/sec
>> osd9: [INF] bench: wrote 1024 MB in blocks of 4096 KB in 13.489992
>> sec at 77729 KB/sec
>>
>>
>> and I run
>> root@MDS2:/mnt/ceph# rados bench 60 write -p data
>>
>> the result is
>>
>> Total time run: 60.553247
>> Total writes made: 1689
>> Write size: 4194304
>> Bandwidth (MB/sec): 111.571
>>
>> Average Latency: 0.573209
>> Max latency: 2.25691
>> Min latency: 0.218494
>>
>>
>>
>> 2011/5/17 Jeff Wu <cpwu@xxxxxxxxxxxxx>:
>> > Hi AnnyRen
>> >
>> > Could you run the following commands and give us the test results?
>> >
>> > $ceph osd tell OSD-N bench // OSD-N : osd number : 0,1,2 ....
>> > $ceph -w
>> >
>> > $rados bench 60 write -p data // refer to "rados -h "
>> >
>> > Jeff
>> >
>> >
>> >
>> > On Tue, 2011-05-17 at 11:53 +0800, AnnyRen wrote:
>> >> I'm running iozone on EXT4 with Ceph v0.26.
>> >> But I got the weird result, most write performance exceed 1GB/s, even
>> >> up to 3GB/s
>> >> I think it's not normal to get the performance outpupt.
>> >>
>> >> Command line I used is: /usr/bin/iozone -azcR -f
>> >> /mnt/ceph/test0516.dbf -g 1G -b /exceloutput0516.xls
>> >> Attachment is the output file...
>> >>
>> >> and my environment is composed of 15 physical machines with
>> >>
>> >> 3 MON, 2MDS (1 active, 1 standby), 10 OSD (1 osd daemon (3T) /host)
>> >> EXT4 format
>> >> data replication size: 3
>> >>
>> >>
>> >>
>> >> "Writer report"
>> >> "4" "8" "16" "32" "64" "128" "256" "512" "1024"
>> >> "2048" "4096" "8192" "16384"
>> >> "64" 983980 1204796 1210227 1143223 1357066
>> >> "128" 1007629 1269781 1406136 1391557 1436229 1521718
>> >> "256" 1112909 1430119 1523457 1652404 1514860 1639786 1729594
>> >> "512" 1150351 1475116 1605228 1723770 1797349 1712772 1783912 1854787
>> >> "1024" 1213334 1471481 1679160 1828574 1888889 1899750 1885572
>> >> 1865912 1875690
>> >> "2048" 1229274 1540849 1708146 1843410 1903457 1980705 1930406
>> >> 1913634 1906837 1815744
>> >> "4096" 1213284 1528348 1674646 1762434 1872096 1882352 1881528
>> >> 1903416 1897949 1835102 1731177
>> >> "8192" 204560 155186 572387 238548 186597 429036 187327
>> >> 157205 553771 416512 299810 405842
>> >> "16384" 699749 559255 687450 541030 828776 555296 742561
>> >> 525483 604910 452423 564557 670539 970616
>> >> "32768" 532414 829610 812215 879441 863159 864794 865938
>> >> 804951 916352 879582 608132 860732 1239475
>> >> "65536" 994824 1096543 1095791 1317968 1280277 1390267 1259868
>> >> 1205214 1339111 1346927 1267888 863234 1190221
>> >> "131072" 1063429 1165115 1102650 1554828 1182128 1185731
>> >> 1190752 1195792 1277441 1211063 1237567 1226999 1336961
>> >> "262144" 1280619 1368554 1497837 1633397 1598255 1609212
>> >> 1607504 1665019 1590515 1548307 1591258 1505267 1625679
>> >> "524288" 1519583 1767928 1738523 1883151 2011216 1993877
>> >> 2023543 1867440 2106124 2055064 1906668 1778645 1838988
>> >> "1048576" 1580851 1887530 2044131 2166133 2236379 2283578
>> >> 2257454 2296612 2271066 2101274 1905829 1605923 2158238
>> >>
>> >>
>> >>
>> >> "Reader report"
>> >> "4" "8" "16" "32" "64" "128" "256" "512" "1024"
>> >> "2048" "4096" "8192" "16384"
>> >> "64" 1933893 2801873 3057153 3363612 3958892
>> >> "128" 2286447 3053774 2727923 3468030 4104338 4557257
>> >> "256" 2903529 3236056 3245838 3705040 3654598 4496299 5117791
>> >> "512" 2906696 3437042 3628697 3431550 4871723 4296637 6246213 6395018
>> >> "1024" 3229770 3483896 4609294 3791442 4614246 5536137 4550690
>> >> 5048117 4966395
>> >> "2048" 3554251 4310472 3885431 4096676 6401772 4842658 5080379
>> >> 5184636 5596757 5735012
>> >> "4096" 3416292 4691638 4321103 5728903 5475122 5171846 4819300
>> >> 5258919 6408472 5044289 4079948
>> >> "8192" 3233004 4615263 4536055 5618186 5414558 5025700 5553712
>> >> 4926264 5634770 5281396 4659702 3652258
>> >> "16384" 3141058 3704193 4567654 4395850 4568869 5387732
>> >> 4436432 5808029 5578420 4675810 3913007 3911225 3961277
>> >> "32768" 3704273 4598957 4088278 5133719 5896692 5537024
>> >> 5234412 5398271 4942992 4118662 3729099 3511757 3481511
>> >> "65536" 4131091 4210184 5341188 4647619 6077765 5852474
>> >> 5379762 5259330 5488249 5246682 4342682 3549202 3286487
>> >> "131072" 3582876 5251082 5332216 5269908 5303512 5574440
>> >> 5635064 5796372 5406363 4958839 4435918 3673443 3647874
>> >> "262144" 3659283 4551414 5746231 5433824 5876196 6011650
>> >> 5552000 5629260 5298830 4982226 4628902 4065823 3421924
>> >> "524288" 3905973 5488778 5219963 6047356 5916811 6180455
>> >> 5495733 5925628 5637512 5537123 3517132 3550861 3047013
>> >> "1048576" 3855595 5634571 5410298 6001809 6464713 6299610
>> >> 5894249 5516031 5800161 5209203 4295840 3724983 3641623
>> >
>> >
>
>
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