From owner-freebsd-questions@FreeBSD.ORG Fri Aug 26 11:03:06 2005 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 1CDB116A421 for ; Fri, 26 Aug 2005 11:03:06 +0000 (GMT) (envelope-from freebsd-questions@m.gmane.org) Received: from ciao.gmane.org (main.gmane.org [80.91.229.2]) by mx1.FreeBSD.org (Postfix) with ESMTP id D125A43D55 for ; Fri, 26 Aug 2005 11:03:04 +0000 (GMT) (envelope-from freebsd-questions@m.gmane.org) Received: from list by ciao.gmane.org with local (Exim 4.43) id 1E8bqV-0005bj-2t for freebsd-questions@freebsd.org; Fri, 26 Aug 2005 12:54:03 +0200 Received: from anthonychavez.org ([166.70.126.66]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 26 Aug 2005 12:54:03 +0200 Received: from acc by anthonychavez.org with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 26 Aug 2005 12:54:03 +0200 X-Injected-Via-Gmane: http://gmane.org/ To: freebsd-questions@freebsd.org From: Anthony Chavez Date: Fri, 26 Aug 2005 03:21:35 -0600 Lines: 55 Message-ID: Mime-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha1; protocol="application/pgp-signature" X-Complaints-To: usenet@sea.gmane.org X-Gmane-NNTP-Posting-Host: anthonychavez.org X-PGP-Key: http://anthonychavez.org/pubkey.asc User-Agent: Gnus/5.1006 (Gnus v5.10.6) Emacs/22.0.50 (darwin) Cancel-Lock: sha1:Af+mAI+HJvEBeKAXrGPsv3ygSng= Sender: news Subject: Stress testing and TIMEOUT - WRITE_DMA X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 26 Aug 2005 11:03:06 -0000 --=-=-= Greetings, freebsd-questions! I've got a number of machines to deploy in very critical locations *very* soon, so I'd appreciate any expedient responses that I can get about this. I have been affected by the recent issues surrounding the recent ATA driver changes in the 5.x branch. I'm currently tracking RELENG_5_4 (FreeBSD 5.4-RELEASE-p6) on systems with ICH4 and ICH6 UDMA controllers. I recently applied Soeren's patch [1] on an ICH4 system, and put a significant write load (/usr/ports/sysutils/stress -i4 -d4) on it for almost 2 weeks. Here are the results: Aug 13 21:10:01 witproto sudo: acc : TTY=ttyp5 ; PWD=/usr/home/acc ; USER=root ; COMMAND=/usr/local/bin/stress -i 4 -d 4 Aug 19 21:31:14 witproto kernel: ad0: TIMEOUT - WRITE_DMA retrying (2 retries left) LBA=7879615 Aug 21 07:59:57 witproto kernel: ad0: TIMEOUT - WRITE_DMA retrying (2 retries left) LBA=3775775 Aug 23 23:01:41 witproto kernel: ad0: TIMEOUT - WRITE_DMA retrying (2 retries left) LBA=5560159 Aug 25 12:06:50 witproto kernel: ad0: TIMEOUT - WRITE_DMA retrying (2 retries left) LBA=5786623 FWIW, my hardware is: atapci0: port 0xffa0-0xffaf,0x376,0x170-0x177,0x3f6,0x1f0-0x1f7 irq 18 at device 31.1 on pci0 ad0: 76293MB at ata0-master UDMA100 During the test, the drive remained in UDMA100 mode and throughput varied from 18ish to 50ish MB/s (eyeball average approx. 20-25 MB/s). System load is 0.00 0.06 0.45 after killing stress. My question is simply this: is the fact that I received 4 TIMEOUT warnings in the space of roughly 2 weeks significant cause for concern? [1] http://people.freebsd.org/~sos/ATA/ -- Anthony Chavez http://anthonychavez.org/ mailto:acc@anthonychavez.org jabber:acc@jabber.anthonychavez.org --=-=-= Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (Darwin) iQEVAwUAQw7fI/AIdTFWAbdTAQqd4Af/VArw9x3D+XAHR7J7m52h6yWb2ETyj3J6 5wXGKCZ5SMzln3mLGEcKsWHGJP/OPg1p3x9PmKHFvvBTHnEapgpdeAu4D4IDMTlC v/xJEph9Quo350q7+YhB6geMbF0i5EGMBNELDdPCba8zcxotcPU3jKVKtJaiL2/X 4iChueEJIixyVaDZdliuqSBhsvy+dP+B0nuk0LTTpQVVoNkeYEN+dM0PeF8eHp2K 5bNLl0Ye8FyVkZ3a6gHq9wVAya3hhBsLyfhOtJkLauukns2dXJ0dh+QaMMyCw7Ct 8k/e/lxPzkxfspdxo34BczSLNpbu69j+2hA/KOID9QuGOgeeCntjWg== =/tBy -----END PGP SIGNATURE----- --=-=-=--