Date: Wed, 12 Nov 2008 11:32:20 -0800 From: "Brent Jones" <brent@servuhome.net> To: "Adam McDougall" <mcdouga9@egr.msu.edu> Cc: stable@freebsd.org, Eduardo Meyer <dudu.meyer@gmail.com>, questions@freebsd.org Subject: Re: Disk top usage PIDs Message-ID: <ee9f3b480811121132r440ec910wf8a6a0fef5a138d0@mail.gmail.com> In-Reply-To: <49107CA1.5090309@egr.msu.edu> References: <d3ea75b30811040612g3ba10a8fuf5551b730176acc2@mail.gmail.com> <49107CA1.5090309@egr.msu.edu>
next in thread | previous in thread | raw e-mail | index | archive | help
On Tue, Nov 4, 2008 at 8:47 AM, Adam McDougall <mcdouga9@egr.msu.edu> wrote: > Eduardo Meyer wrote: >> >> Hello, >> >> I have some serious issue. Sometimes something happens and my disk >> usage performance find its limit quickly. I follow with gstat and >> iostat -xw1, and everything usually happens just fine, with %b around >> 20 and 0 to 1 pending i/o request. Suddely I get 30, 40 pending >> requests and %b is always on 100% (or more than this). >> >> fstat and lsof gives me no hint, because the type of programs as well >> as the amount of 'em is just the same. >> >> How can I find the PID which is hammering my disk? Is there an "iotop" >> or "disktop" tool or something alike? >> >> Its a mail server. I have pop3, imap, I also have maildrop and >> sometimes, httpd, working around the busiest mount point. >> >> I have also started AUDIT, however all I can get are the top PIDs >> which issue read/write requests. Not the requests which take longer to >> perform (the busiest ones), or should I look for some special audit >> class or event other than open, read and write? >> >> Thank you in advance. >> >> > > top -mio > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org" > I learn something new everyday on this list...! -- Brent Jones brent@servuhome.net
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?ee9f3b480811121132r440ec910wf8a6a0fef5a138d0>