On the sar front, you watch out for avgqu-sz (and/or await and svctm)
suddenly increasing as tps increases.
The queue length is like the "load factor", where <= 1 is good, 4 is
bad, and more is evil.
--dave
On 2018-08-20 12:18 a.m., Kevin Cozens via talk wrote:
On 2018-08-19 11:53 AM, D. Hugh Redelmeier via talk wrote:
But I think that my system's bottleneck is often disk I/O. sysmon
has no
strip chart for that.
[snip]
Do you have any suggestions for a simple (possibly simplistic) tool to
show disk bottlenecks in real time?
A quick internet search suggests you should look at the sar command
that is part of sysstat.
--
David Collier-Brown, | Always do right. This will gratify
System Programmer and Author | some people and astonish the rest
[email protected] | -- Mark Twain
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