raw filesystem counters
esr+freebsd-fs at mail.hebrew.edu
Tue Feb 13 19:56:08 UTC 2018
Wow Eric that is exactly what I was looking for!
Nothing similar exists for ZFS correct?
On Mon, Feb 12, 2018 at 10:09 PM, Eric A. Borisch <eborisch at gmail.com>
> On Sun, Feb 11, 2018 at 1:06 PM, E.S. Rosenberg <esr at cs.huji.ac.il> wrote:
> > Hi,
> > Hopefully I'm not asking something that has been answered thousands of
> > times, I did search but did not find.
> > Is there any way to access raw disk counters similar to those found on
> > Linux in:
> > /sys/class/block/<device>/stat
> > Preferably also by accessing such a virtual file and not by using iostat
> > zpool iostat which are already pre-processing counters and need to be run
> > constantly to get accurate real-time estimates.
> > So far I have not stumbled upon the right sysctl key to get these
> > (and TBH as said before I'd much rather read a "file" then run a command
> > though that matters less as long as the counters are raw).
> > Background: I'm trying to get a better idea of what is going on with our
> > IO, I would like to push the counters into Zabbix and maybe other data
> > analysis software later so I prefer raw counters that can then be
> > by whatever software we are using.
> > Thanks!
> > Eli
> iostat -Ixd dev0 [dev1 ..]
> Gives from-boot cumulative values; these can be shoved (with minimal
> awk processing) into Zabbix and pre-processed to "change per second"
> on the Zabbix server. Read/write ops/bytes as well as some other
> interesting stats.
> - Eric
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