IOZone Performance is very Strange

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



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

Attachment: outputlog0516.log
Description: Binary data


[Index of Archives]     [CEPH Users]     [Ceph Large]     [Information on CEPH]     [Linux BTRFS]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]
  Powered by Linux