Date: Sun, 16 Sep 2001 19:12:20 -0500 From: "David W. Chapman Jr." <dwcjr@inethouston.net> To: Cyrille Lefevre <clefevre@citeweb.net> Cc: Erik Trulsson <ertr1013@student.uu.se>, stable@FreeBSD.ORG Subject: Re: make -j4 vs -j8... 4 works, but 8 does not Message-ID: <20010916191219.H76323@leviathan.inethouston.net> In-Reply-To: <200109170009.f8H09Y921584@gits.dyndns.org> References: <20010916003359.A48953@student.uu.se> <200109170009.f8H09Y921584@gits.dyndns.org>
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On Mon, Sep 17, 2001 at 02:09:34AM +0200, Cyrille Lefevre wrote: > j1 12:36 > j2 12:46 > j4 11:36 > j8 11:21 > > so, for a 12 min job, you could win 1 min using -j4, which may gives > you 1 hour for a 12 hours job (such as buildworld :). ok, it's not so > many, but that may help a lot. for instace, I currently use -j4 since > -j8 is too CPU and memory intensive (the machine slow down significally). > > PS : I'm using SCSI disks. using IDE disks probably gives you different > results. I/O are very differents between the two. > On my IBM IDE drives with softupdates, tags and write cache enabled, on my thunderbird 1100 with 256mb ram, I only do -j5 or -j6 at most. I can't seem to get my buildworlds lower than 40 mins. -- David W. Chapman Jr. dwcjr@inethouston.net Raintree Network Services, Inc. <www.inethouston.net> dwcjr@freebsd.org FreeBSD Committer <www.FreeBSD.org> To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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