Date: Tue, 14 Aug 2018 12:38:57 +0200 From: Marco Steinbach <coco@executive-computing.de> To: Alan Somers <asomers@freebsd.org> Cc: FreeBSD <freebsd-stable@freebsd.org> Subject: Re: Jails on ZFS yielding 100% load on gstat Message-ID: <20180814123857.00004bf0@executive-computing.de> In-Reply-To: <CAOtMX2g=mtSfs=2NmdV6JHNvr%2BapV741dvSX%2B2H5YqOuxVn=-w@mail.gmail.com> References: <20180812205047.00002767@executive-computing.de> <CAOtMX2g=mtSfs=2NmdV6JHNvr%2BapV741dvSX%2B2H5YqOuxVn=-w@mail.gmail.com>
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On Mon, 13 Aug 2018 08:09:00 -0600 Alan Somers <asomers@freebsd.org> wrote: > Jails probably aren't the source of your problem. You need to find > out what process or processes are responsible for all this activity. > Since the write bandwidth is fairly low, you might have a process > that's sync(2)ing or fsync(2)ing. too often. "gstat -o" will show if > that's the case. You can also try running "top -mio" to see which > processes are doing the most I/O. > > -Alan [...] Thank you for hinting me to the -o flag of gstat, very useful. MfG CoCo
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