From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <3949DDBD.331E255F@wanadoo.fr> Date: Fri, 16 Jun 2000 09:56:45 +0200 From: Martin Costabel MIME-Version: 1.0 To: Geert Uytterhoeven CC: Linux/PPC Development Subject: Re: Interrupt hick ups References: Content-Type: text/plain; charset=us-ascii Sender: owner-linuxppc-dev@lists.linuxppc.org List-Id: Geert Uytterhoeven wrote: > > On Tue, 13 Jun 2000, Geert Uytterhoeven wrote: > > Since a few kernel versions (late 2.3.x), I see interrupt hick ups when doing > > disk access on my Sym53c875. I.e. when I'm typing something and the disk > > shows a lot of activity, keystrokes and mouse moves happen in burst with some > > delay (ca. 2 seconds). > > > > Anyone seeing a similar thing? This is on a CHRP LongTrail. Do you still see this in -ac16 or later? I had this, too, and from linux-kernel I understand that everyody had it, but it's gone now. What is gone too, unfortunately, is the phenomenal IDE speed improvement. In late 2.3.99/early 2.4.0-test1, I had a "hdparm -t"-measured throughput more than 3 times as high (almost 6MB/sec, sometimes more) as with 2.2.x (1.90MB/sec). It diminished in -ac15 (3.25MB/sec), and in -ac16 it is almost back down (2.30MB/sec) to the 2.2.x values. -- Martin ** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/