Messages in this thread | | | Date | Thu, 21 Dec 2000 23:31:19 +1100 | From | john slee <> | Subject | Re: Weird vmstat reports in 2.2.18 |
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On Wed, Dec 20, 2000 at 11:55:37AM -0300, albertogli@telpin.com.ar wrote: > I'm getting some strange reports with vmstat on a dual iPPro running 2.2.18, > it doesnt happen very frequently, but i see it a lot when compiling something > (kernel and mysql specially, not when compiling small stuff), though it doesnt > look like a high-load issue. When the machine is idle (ie. most of the time at > the moment) it doesnt show up.
i can consistently produce this on dual p3 600/2.2.17pre20. in my case it's the `ab' benchmark tool supplied with apache that helps reproduce it. incidentally i only noticed this in the last day or two, good to know i'm not the only one. :-)
our setup is apache/php/postgresql. fairly intensive pages. i start seeing vmstat oddities after about 15 concurrent requests.
> I wasnt able to trigger it in a predictable way, it just pops up... > BUT if i open two vmstats in different consoles.. the number doesnt show up in > both, just in one of them... so i'm not sure at all if this is a kernel bug, or > just another (vmstat?) feature =)
the vmstat processes probably aren't reading /proc/* at exactly the same time, so the numbers they see will likely be different...
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