| ioacct interpretation and unit [message #36076] |
Tue, 19 May 2009 15:29  |
Atosboy
Messages: 15
Registered: April 2009
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Junior Member |
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Hi,
We try to analyze the behavior of our system in OpenVZ environnement. In order to see it behavior, we periodically capture the content of /proc/bc/<veid>/ioacct file and try to interpret theses indicators.
We are from of several problems :
+ What represent each counter(read, write, vfs_read, vfs_write, ....)?
+ What is the unit for each counter(Kb, Block, ...)?
Thank for your help,
Pat
NB : For instance, the first snapshot is :
090515_14h48m06 read 1081344
090515_14h48m06 write 684281856
090515_14h48m06 dirty 684572672
090515_14h48m06 cancel 37818368
090515_14h48m06 missed 0
090515_14h48m06 syncs_total 0
090515_14h48m06 fsyncs_total 46
090515_14h48m06 fdatasyncs_total 1
090515_14h48m06 range_syncs_total 0
090515_14h48m06 syncs_active 0
090515_14h48m06 fsyncs_active 0
090515_14h48m06 fdatasyncs_active 0
090515_14h48m06 range_syncs_active 0
090515_14h48m06 vfs_reads 4737583
090515_14h48m06 vfs_read_chars 576083171
090515_14h48m06 vfs_writes 281962
090515_14h48m06 vfs_write_chars 829761534
090515_14h48m06 io_pbs 71
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