Date: Tue, 13 Feb 2018 21:56:06 +0200 From: "E.S. Rosenberg" <esr+freebsd-fs@mail.hebrew.edu> To: "Eric A. Borisch" <eborisch@gmail.com> Cc: freebsd-fs@freebsd.org Subject: Re: raw filesystem counters Message-ID: <CA%2BK1OzSyF=E8CZgn=JSYOW4XPwnLWxYGHt7Xp9ZrvrXnECy2Rg@mail.gmail.com> In-Reply-To: <CAASnNnrYjYYijrBtz-bkxvMTa9ugYYLuiDtLNJM1gFJENdjYRg@mail.gmail.com> References: <CA%2BK1OzSda42zBCfT4n0_DScf74TsJyHsxBHaxZwcjkOe3ccmwA@mail.gmail.com> <CAASnNnrYjYYijrBtz-bkxvMTa9ugYYLuiDtLNJM1gFJENdjYRg@mail.gmail.com>
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Wow Eric that is exactly what I was looking for! Thanks! Nothing similar exists for ZFS correct? Thanks again, Eli On Mon, Feb 12, 2018 at 10:09 PM, Eric A. Borisch <eborisch@gmail.com> wrote: > On Sun, Feb 11, 2018 at 1:06 PM, E.S. Rosenberg <esr@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 > counters > > (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 > processed > > 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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