Skip site navigation (1)Skip section navigation (2)
Date:      Wed, 20 Nov 2013 02:48:54 +0100
From:      =?utf-8?B?U3RhbmlzxYJhdw==?= Halik <sthalik@misaki.pl>
To:        Mark Robert Vaughan Murray <markm@freebsd.org>
Cc:        current@freebsd.org
Subject:   Re: random_harvestq eats much on geode-lx alix2c3
Message-ID:  <1995425.XJjfe8p5PP@aurora>
In-Reply-To: <C33F6708-0FA5-4AC3-90BD-807B27FE264C@FreeBSD.org>
References:  <4041856.BpQXZdSKfK@aurora> <C33F6708-0FA5-4AC3-90BD-807B27FE264C@FreeBSD.org>

next in thread | previous in thread | raw e-mail | index | archive | help
On Tue November 19 2013 23:01:37 Mark Robert Vaughan Murray wrote:
> > rand_harvestq
> Take a look at random(4) - sysctls to turn off harvesting are documented
> there.

Thanks! Turning off software interrupt collection brings the cpu usage next to 
nothing.

> That is quite a busy harvestq - could you please give me some more details
> of what that box is and what it was doing at the time (numbers would be
> good!)

The box is a home firewall with pf/altq. HZ=1000, despite poor hardware. It's 
alix2c3. Uses polling and a long, bloated pf.conf. Also, scrubs packets a bit.

I'd be glad to attach more detail, but what do you ask for? Also, can text 
attachments be put here? For posterity's sake, better not to link to them.

cheers,
-sh

-- 
xmpp:sthalik@jabster.pl
sip:sthalik@misaki.pl



Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?1995425.XJjfe8p5PP>