Date: Mon, 07 Jan 2002 02:30:37 -0700 From: "Joe Parks" <pleaseworky@hotmail.com> To: freebsd-questions@freebsd.org Subject: trying to understand vmstat output with blocked processes... Message-ID: <F201YShdmhznOxbkK0r0001a836@hotmail.com>
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I have a server that looks like this: r b w avm fre flt re pi po fr sr da0 da1 in sy cs us sy id 0 7 0 302040 37416 63 0 0 0 60 4 0 0 241 517 60 1 1 98 0 7 0 301336 37416 8 0 0 0 0 0 0 0 234 490 70 0 1 99 0 7 0 300664 37416 9 0 0 0 0 0 0 0 233 504 70 1 2 98 0 7 0 308636 37416 1278 0 0 0 1150 0 0 0 234 2777 204 5 6 89 As you can see, among other things, I have a constant '7' in the second column - that is, seven processes are blocked for I/O. SO I have two quick questions: 1. Is there any way to know which processes are blocked (which processes are those 7 processes) ? 2. Why doesn't this number ever go back down ? I know for a fact that there are times that server utilization goes way down and barely anything happens on the server, but even after "resting" I still see between 6-9 processes in the blocked column. At some point they have to become unblocked, right ? Or is it possible for some process(es) to be stuck in a blocked state ? thanks! _________________________________________________________________ MSN Photos is the easiest way to share and print your photos: http://photos.msn.com/support/worldwide.aspx To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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