Date: 24 Sep 2000 20:26:58 +0200 From: Dag-Erling Smorgrav <des@ofug.org> To: Warner Losh <imp@village.org> Cc: The Hermit Hacker <scrappy@hub.org>, Bruce Evans <bde@zeta.org.au>, freebsd-current@FreeBSD.ORG, freebsd-smp@FreeBSD.ORG Subject: Re: 'interrupt-level buffer overflows' for sio device? Message-ID: <xzp7l817ij1.fsf@flood.ping.uio.no> In-Reply-To: Warner Losh's message of "Thu, 07 Sep 2000 21:14:58 -0600" References: <Pine.BSF.4.21.0009080008090.527-100000@thelab.hub.org> <200009080314.VAA50701@harmony.village.org>
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Warner Losh <imp@village.org> writes:
> In message <Pine.BSF.4.21.0009080008090.527-100000@thelab.hub.org> The Hermit Hacker writes:
> : Okay, I'm a little confused here ... from what I'm reading/following, this
> : isn't a new problem ... or is it? If not, why has it suddenly manifested
> : itself with the new SMP code?
> It seems to be new with the SMP code. At least that's what my reading
> of the original message is.
I'm seeing the same thing as Marc, but I have a little more info:
1) it started after the SMPng commit.
2) it's not just sio, it's everything:
- interactive response is markedly slower.
- the keyboard autorepeats slower than it used to (even with
kbdcontrol -r fast).
- I/O bound processes such as mpg123 or cvsup will pause briefly
when there is other I/O going on (moving the mouse, typing fast,
holding down a key on the keyboard), which they didn't use to.
DES
--
Dag-Erling Smorgrav - des@ofug.org
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