Date: Fri, 18 Dec 2009 11:21:37 +0300 From: "Alexander Zagrebin" <alexz@visp.ru> To: "'Steven Hartland'" <killing@multiplay.co.uk>, <freebsd-current@freebsd.org> Subject: RE: 8.0-RELEASE: disk IO temporarily hangs up (ZFS or ATA relatedproblem) Message-ID: <0A946094C9EB449CB37853E5B58F7BBE@vosz.local> In-Reply-To: <4497C65B2FB14CE781BABF07F396841D@multiplay.co.uk> References: <39309F560B98453EBB9AEA0F29D9D80E@vosz.local> <4497C65B2FB14CE781BABF07F396841D@multiplay.co.uk>
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Big thanks for your reply! > We see a very similar pattern on straight ufs disks on an > areca controller. Machine > console becomes totally unresponsive 30 or so seconds at a > time, so it maybe > something more intergral to device operation, buffercache or > something? In my case console is responsive, but there are delays when starting command due to disk busy. > The IO load on the machine is being generated by updating > rrds files in mrtg > for a few hundred switch ports and a few thousand servers. I'm noticing delays (lockups) even if system is idle. -- Alexander Zagrebin
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