From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sc8-sf-mx2-b.sourceforge.net ([10.3.1.12] helo=sc8-sf-mx2.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Cipher TLSv1:DES-CBC3-SHA:168) (Exim 3.31-VA-mm2 #1 (Debian)) id 1APpNc-0001mo-00 for ; Fri, 28 Nov 2003 12:38:20 -0800 Received: from pop.gmx.de ([213.165.64.20] helo=mail.gmx.net) by sc8-sf-mx2.sourceforge.net with smtp (Exim 4.24) id 1APpNc-00016S-89 for user-mode-linux-devel@lists.sourceforge.net; Fri, 28 Nov 2003 12:38:20 -0800 Message-ID: <01df01c3b5f0$27898bd0$2000000a@schlepptopp> From: "roland" References: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Subject: [uml-devel] Re: bug in COW? - Re: [uml-user] uml 2.6.0-test9 crash Sender: user-mode-linux-devel-admin@lists.sourceforge.net Errors-To: user-mode-linux-devel-admin@lists.sourceforge.net List-Help: List-Post: List-Subscribe: , List-Id: The user-mode Linux development list List-Unsubscribe: , List-Archive: Date: Fri, 28 Nov 2003 21:42:34 +0100 To: Henrik Nordstrom Cc: user-mode-linux-devel@lists.sourceforge.net, uml-user hi! > bonnie++ is a good one.. thanks - will give it a try. i already were aware of bonnie, but i thought it was just a benchmark program. > Maybe, maybe not. What does vmstat on the host report while you run this? here is the output. the i/o stops, but uml still consumes cpu. regards roland 2 1 0 273464 33628 156188 0 0 40 1732 1208 64200 42 58 0 0 1 0 0 269412 33628 160104 0 0 3916 16 1988 56447 23 28 48 0 1 0 0 265368 33628 164024 0 0 3920 0 1984 11543 6 12 82 0 1 0 0 265372 33628 164024 0 0 0 0 1006 43904 38 62 0 0 2 0 0 262528 33628 166768 0 0 2744 0 1699 71773 42 58 0 0 1 0 0 255804 33628 173280 0 0 6512 0 2632 73736 40 60 0 0 1 1 0 249364 33628 179512 0 0 6232 0 2570 102489 46 54 0 0 1 2 0 246336 33700 182364 0 0 2856 5800 1992 95142 45 55 0 0 1 2 0 246332 33700 182368 0 0 4 4340 1211 43884 39 60 1 0 procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu---- r b swpd free buff cache si so bi bo in cs us sy id wa 0 3 0 246324 33700 182376 0 0 8 6364 1238 4349 4 9 87 0 0 3 0 246308 33700 182392 0 0 16 7548 1289 294 0 1 99 0 0 3 0 246304 33700 182396 0 0 4 2104 1293 279 0 1 99 0 0 3 0 246296 33700 182404 0 0 8 1716 1271 267 0 2 98 0 1 0 0 243456 33700 185148 0 0 2744 68 1764 3261 7 19 74 0 <---! 1 0 0 243440 33700 185148 0 0 0 0 1003 56 34 66 0 0 1 0 0 243440 33700 185148 0 0 0 0 1002 54 33 67 0 0 1 0 0 243440 33700 185148 0 0 0 0 1002 54 31 69 0 0 1 0 0 243440 33700 185148 0 0 0 0 1002 52 33 67 0 0 1 0 0 243440 33700 185148 0 0 0 0 1002 47 29 71 0 0 1 1 0 243396 33744 185148 0 0 0 3240 1116 75 31 69 0 0 1 0 0 243396 33744 185148 0 0 0 0 1006 53 34 66 0 0 1 0 0 243396 33744 185148 0 0 0 0 1003 57 27 73 0 0 1 0 0 243396 33744 185148 0 0 0 0 1003 52 33 67 0 0 1 0 0 243396 33744 185148 0 0 0 0 1003 48 32 68 0 0 1 0 0 243396 33744 185148 0 0 0 0 1003 47 34 66 0 0 ----- Original Message ----- From: "Henrik Nordstrom" To: "roland" Cc: ; "uml-user" Sent: Friday, November 28, 2003 9:39 AM Subject: Re: bug in COW? - Re: [uml-user] uml 2.6.0-test9 crash > On Fri, 28 Nov 2003, roland wrote: > > > after making the rootfs-clone a cow-filesystem (by adding ubd2=rootfsclone.cow,rootfsclone.img), > > the freeze happened again when doing some heavy writing. so - am i allowed to assume, that > > there is a bug in the copy-on-write code? > > Maybe, maybe not. What does vmstat on the host report while you run this? > > > btw: could anybody recommend a general filesystem stresstest-tool which does the worst to > > filesytems, you can do (besides formatting or overwriting)? :D > > bonnie++ is a good one.. > > Regards > Henrik > ------------------------------------------------------- This SF.net email is sponsored by: SF.net Giveback Program. Does SourceForge.net help you be more productive? Does it help you create better code? SHARE THE LOVE, and help us help YOU! Click Here: http://sourceforge.net/donate/ _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel