TTY task group scheduling

Matthew D. Fuller fullermd at
Thu Nov 18 22:11:20 UTC 2010

[ Trim CC a bit]

On Thu, Nov 18, 2010 at 06:56:35PM +0000 I heard the voice of
Alexander Best, and lo! it spake thus:
> On Thu Nov 18 10, Matthew D. Fuller wrote:
> > 
> > Well, my (admittedly limited, and certainly anecdotal) experience
> > is that Linux's interactive response when under heavy load was
> > always much worse than FreeBSD's.
> well...i tried playing back a 1080p vide files while doing `make
> -j64 buildkernel` and FreeBSD's interactivity seems far from
> perfect.

CPU soak against CPU soak isn't really what I meant   :)

I mean simple stuff like wandering around in a terminal, firing off
top's and netstat's, loading up vi's and less's.  When I've worked on
Linux boxes that were nailed to the wall doing other stuff, that sort
of thing got very laggy and inconsistent; similarly loaded FreeBSD
boxes always felt much smoother.

To be sure, things like competing disk access can be a different
story.  But I'm talking more CPU suds, and small scheduler tweaks
point in that direction too.

Matthew Fuller     (MF4839)   |  fullermd at
Systems/Network Administrator |
           On the Internet, nobody can hear you scream.

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