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## Determine % of write IO from SAR

Occasional Contributor

## Determine % of write IO from SAR

Given "sar -d -b interval count" output, how can I determine the "Write" rate?

Or can't I??

I was trying to use the bwrite or lwrite as a percentage of BLKS/sec, but not sure that is accurate... Just trying to gauge write rate per second for remote replication purposes.
Never let a computer win.
2 REPLIES

## Re: Determine % of write IO from SAR

What is ur OS version?
Honored Contributor

## Re: Determine % of write IO from SAR

Sar is not the mos acurate, tool out there, if you have the posibility use glance or perfomance agen.

If u are stuck with sar, the actual writes to disk are in the bwrit/s column.

lwrit/s don't go all the way to disk, they are resolved by cache,etc.
Windows?, no thanks