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Date:      Wed, 07 Mar 2001 14:46:59 +0200
From:      Mark Murray <mark@grondar.za>
To:        Maxim Sobolev <sobomax@FreeBSD.org>
Cc:        dougb@FreeBSD.org, current@FreeBSD.org
Subject:   Re: harvest_interrupt=YES slows down machine 
Message-ID:  <200103071246.f27Ck6R59376@gratis.grondar.za>
In-Reply-To: <3AA60C69.8FEBB8A3@FreeBSD.org> ; from Maxim Sobolev <sobomax@FreeBSD.org>  "Wed, 07 Mar 2001 12:24:43 %2B0200."
References:  <3AA60C69.8FEBB8A3@FreeBSD.org> 

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> > Apart from a ridiculously low maxusers (you have 10, I recommend 128),
> > I'm not sure what the problem is.
> 
> I do not see why it is "ridiculously low". Even GENERIC recommends 32, while
> this is a small system intended to be used by only one person, so I do not see
> any problem with it. I never had any `out of descriptors' or `can't fork'
> during my routine operations on this box (2.5 years).

Ok - then please leave it at 32.

> > Please set maxusers to 128, and time a make world with interrupt
> > harvesting on, and again with it off.
>
> I do not see what it will buy you. Could you please just believe my
> opinion based on the boot time? After all, even when this box unslowed
> make world takes 4-5 hours to complete, so with this slowdown it would
> take about 20-30, which I certainly can't tolerate without sufficient
> reason.

If you want me to help you, please help me get good info.

It's very important to me _know_ wether this is a boot slowdown or
a generic - assertions are not good enough, I need hard facts.

My own laptop (A Toshiba Libretto 110CT) does a make world in
about 8 hours (and it always has). Interrupt harvesting has not
made a noticable difference (I have not been keeping records, but
an overnight build has not yet progressed into my breakfast).

M
-- 
Mark Murray
Warning: this .sig is umop ap!sdn

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