Date: Thu, 13 Jan 2000 03:22:22 +0100 (CET) From: Oliver Fromme <olli@dorifer.heim3.tu-clausthal.de> To: freebsd-questions@FreeBSD.ORG Subject: Re: high load, nothing happening? Message-ID: <200001130222.DAA63326@dorifer.heim3.tu-clausthal.de> In-Reply-To: <85j0cq$1hbq$1@atlantis.rz.tu-clausthal.de>
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spork <spork@super-g.com> wrote in list.freebsd-questions:
> [...]
> I have maxusers at 512, NMBCLUSTERS at 4096, and the following sysctl
> adjustments:
Not directly related to your question, but...
4096 mbuf clusters seems pretty low for a server of that size.
I'd recommend that you carefully watch ``netstat -m'' during
operation. There should always be plenty of mbuf room left,
even in peak situations. I suspect that you'll have to
increase the number.
> systat, vmstat, iostat all look normal, and I've not seen any curious
> entries in the logs.
So vmstat and top report that the box is mostly idle (nearly
100%), there are no processes that consume significant amounts
of CPU time, and the load is still >= 1.0? Is the system
usable, or does it "feel" slow when used interactively?
> So that's the info, my questions are "why the load", and "is that OK"?
> Something seems wrong here, but I'm at a loss.
If the above is true, then it's certainly not OK, and there's
definitely something wrong. I experienced similar things on
other boxes, even simple workstations (no big servers): the
load average raised to 1.0, then dropped back to 0.0 after a
while, for no apparent reason. It didn't affect operation at
all, so I suspected a bug in the load average calculation, and
I didn't investigate any further.
Regards
Oliver
--
Oliver Fromme, Leibnizstr. 18/61, 38678 Clausthal, Germany
(Info: finger userinfo:olli@dorifer.heim3.tu-clausthal.de)
"In jedem Stück Kohle wartet ein Diamant auf seine Geburt"
(Terry Pratchett)
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