From owner-cvs-all Mon Sep 20 1:46:10 1999 Delivered-To: cvs-all@freebsd.org Received: from freesbee.wheel.dk (freesbee.wheel.dk [193.162.159.97]) by hub.freebsd.org (Postfix) with ESMTP id B256114C07; Mon, 20 Sep 1999 01:46:02 -0700 (PDT) (envelope-from jesper@wheel.dk) Received: by freesbee.wheel.dk (Postfix, from userid 1001) id E4D853E1B; Mon, 20 Sep 1999 10:46:01 +0200 (CEST) Date: Mon, 20 Sep 1999 10:46:01 +0200 From: Jesper Skriver To: Poul-Henning Kamp , Matthew Dillon Cc: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: User block device access (was: cvs commit: src/sys/miscfs/specfs spec_vnops.c src/sys/sys vnode.h src/sys/kern vfs_subr.c) Message-ID: <19990920104601.B75298@skriver.dk> References: <18011.937771504@critter.freebsd.dk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii User-Agent: Mutt/0.96.2i In-Reply-To: <18011.937771504@critter.freebsd.dk>; from Poul-Henning Kamp on Sun, Sep 19, 1999 at 10:05:04PM +0200 Sender: owner-cvs-all@FreeBSD.ORG Precedence: bulk On Sun, Sep 19, 1999 at 10:05:04PM +0200, Poul-Henning Kamp wrote: > In message , Matthew > Jacob writes: > > > > >Okay, then. Really, seriously, though- if we're all stuck arguing a > >major issue from different viewpoints for lack of < 1K$ equipment, this is > >an easy problem to solve from the K$ point of view (hadn't thought about > >customs- I guess I just can't express mail these puppies, can I? :-)) > > You know, only Matt Dillon thought this was a hardware issue, I don't > think it is. I see the same a Poul-Henning # time dd if=/dev/rda0 of=/dev/null bs=8k count=10000 10000+0 records in 10000+0 records out 81920000 bytes transferred in 6.293370 secs (13016873 bytes/sec) 6.30s real 0.04s user 0.46s system # time dd if=/dev/da0 of=/dev/null bs=8k count=10000 10000+0 records in 10000+0 records out 81920000 bytes transferred in 12.496958 secs (6555195 bytes/sec) 12.51s real 0.02s user 3.26s system This is on CPU: Pentium II/Xeon/Celeron (451.09-MHz 686-class CPU) Origin = "GenuineIntel" Id = 0x652 Stepping = 2 ahc1: irq 15 at device 20.1 on pci0 ahc1: aic7895 Wide Channel B, SCSI Id=7, 255 SCBs da0 at ahc1 bus 0 target 0 lun 0 da0: Fixed Direct Access SCSI-2 device da0: 40.000MB/s transfers (20.000MHz, offset 8, 16bit), Tagged Queueing Enabled da0: 4357MB (8925000 512 byte sectors: 255H 63S/T 555C) So it doesn't look like a HW issue. /Jesper -- Jesper Skriver (JS4261-RIPE), Network manager Tele Danmark DataNet, IP section (AS3292) One Unix to rule them all, One Resolver to find them, One IP to bring them all and in the zone to bind them. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message