Date: Thu, 29 Jun 2000 03:50:04 GMT From: mike@sentex.net (Mike Tancsa) To: stable@freebsd.org Subject: Re: Strange FreeBSD 4.x system freezes and SQUID Message-ID: <395ac5d3.371222900@mail.sentex.net> In-Reply-To: <SEN.962141063.246806213@news.sentex.net> References: <SEN.962141063.246806213@news.sentex.net>
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On 27 Jun 2000 17:24:23 -0400, in sentex.lists.freebsd.misc you wrote:
To followup on my system 'freezing' problem.... I have been running the box
for a good 12hrs now with 2 small modifications.
One, I up'd the max users to 256. Two, I began rotating the squid logs
every 4hrs.
This last point is rather strange. I notice that after the log rotation,
my free vnodes blast up from 2,000 to nearly 12,000.
4 users Load 0.62 0.36 0.22 Wed Jun 28 23:49
Mem:KB REAL VIRTUAL VN PAGER SWAP PAGER
Tot Share Tot Share Free in out in out
Act 191376 1168 193640 1908 19860 count
All 513320 1572 2994980 2488 pages
zfod Interrupts
Proc:r p d s w Csw Trp Sys Int Sof Flt cow 443 total
1 5 1140 588 1065 444 18 2 59568 wire ahc0
irq10
203060 act fxp0
irq12
4.7%Sys 0.9%Intr 3.7%User 0.0%Nice 90.7%Idl 231828 inact 210 fxp1
irq9
| | | | | | | | | | 18864 cache 5 twe0 irq11
==+>> 996 free fdc0
irq6
daefr sio0
irq4
Namei Name-cache Dir-cache prcfr sio1
irq3
Calls hits % hits % react sio7
irq7
390 332 85 6 2 pdwak 100 clk
irq0
pdpgs 128 rtc
irq8
Disks twed0 da0 da1 da2 fd0 pass0 pass1 intrn
KB/t 10.33 16.00 0.00 0.00 0.00 0.00 0.00 62064 buf
tps 5 0 0 0 0 0 0 233 dirtybuf
MB/s 0.05 0.00 0.00 0.00 0.00 0.00 0.00 36260 desiredvnodes
% busy 5 0 0 0 0 0 0 36213 numvnodes
8479 freevnodes
This is after rotating the logs an hours ago via cron. The freevnodes
keeps going down until the next rotate. Why would rotating a few big logs
cause these values to change so much ?
-rw-r--r-- 1 squid squid 28204318 Jun 28 23:51 access.log
-rw-r--r-- 1 squid squid 65535714 Jun 28 22:00 access.log.0
-rw-r--r-- 1 squid squid 19418684 Jun 28 18:00 access.log.1
If I dont rotate them I start to get into the 'freezing' syndrome again
where the system is unresponsive for a good 3-6 seconds.
---Mike
Mike Tancsa (mdtancsa@sentex.net)
Sentex Communications Corp,
Waterloo, Ontario, Canada
"Given enough time, 100 monkeys on 100 routers
could setup a national IP network." (KDW2)
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