*BSD News Article 77535


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From: ip@mcc.ac.uk (Ian Pallfreeman)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: 2.1.5-RELEASE sio silo overflows?
Date: 4 Sep 1996 19:58:44 GMT
Organization: not this decade...
Lines: 17
Message-ID: <50kn1k$q5u@yama.mcc.ac.uk>
References: <50i54c$mq7@yama.mcc.ac.uk>
NNTP-Posting-Host: albatross.mcc.ac.uk

In article <50i54c$mq7@yama.mcc.ac.uk>, yours truly wrote:
>	Sep  3 21:29:55 clover /kernel: sio2: 4 more silo overflows (total 448)

Thanks for all the replies, folks -- the most plausible theory is that the
2.1.5-RELEASE VM code is disabling interrupts for too long. 

I've taken the easy way out and hacked the fifo threshold in sio.c down to 8,
and it's still only eating about 1-2% of my CPU at full blast. No problem.

Ain't it great when a kernel modification is "the easy way"? :-)

Ian.
-- 
 UNIX sysadmindroid, mail and news hacker, sentenced to a lifetime of slavery.
   Network Unit, Manchester Computing, The University, Manchester, England.
	  {ip@mcc.ac.uk,ip@u-net.com} -- http://jumper.mcc.ac.uk/~ip/
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