Date: Thu, 14 Dec 2000 07:10:54 +0100 From: Brad Knowles <blk@skynet.be> To: "Michael C . Wu" <keichii@peorth.iteration.net>, "Jason C. Wells" <jcwells@nwlink.com> Cc: chat@FreeBSD.ORG, Greg Lehey <grog@lemis.com> Subject: Re: Very interesting benchmarking results... Message-ID: <v04220802b65e1457cfc5@[10.0.1.2]> In-Reply-To: <20001213213136.A20457@peorth.iteration.net> References: <v04220802b65db6f83bd5@[10.0.1.2]> <Pine.SOL.3.96.1001213160828.87C-100000@utah> <20001213213136.A20457@peorth.iteration.net>
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At 9:31 PM -0600 2000/12/13, Michael C . Wu wrote: > Brad failed to post the simultaneous CPU times at the same > time. i.e. at 128 processes, how much CPU time was doing I/O? > Also, how much memory was the processes taking? These are data points that simply were not collected during my original tests, nor in my more recent tests. The rawio tool does provide the capability to get this kind of information for rawio itself (although it doesn't show how much CPU time is spent in idle/kernel/user across the entire system for that test), but I have not modified my driver script to use that output format. While vinum may be very significantly faster, my guess is that it probably also takes some extra CPU cycles to make that happen. Greg should be able to give you more specific details from his own testing. -- These are my opinions -- not to be taken as official Skynet policy ====================================================================== Brad Knowles, <blk@skynet.be> || Belgacom Skynet SA/NV Systems Architect, Mail/News/FTP/Proxy Admin || Rue Colonel Bourg, 124 Phone/Fax: +32-2-706.13.11/12.49 || B-1140 Brussels http://www.skynet.be || Belgium "They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety." -Benjamin Franklin, Historical Review of Pennsylvania. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-chat" in the body of the message
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