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Newsgroups: comp.unix.bsd.freebsd.misc Path: euryale.cc.adfa.oz.au!newshost.carno.net.au!harbinger.cc.monash.edu.au!news.mel.connect.com.au!munnari.OZ.AU!news.ecn.uoknor.edu!feed1.news.erols.com!howland.erols.net!news.mathworks.com!uunet!in1.uu.net!news.interactive.net!onyx.interactive.net!not-for-mail From: Chris Mauritz <ritz@interactive.net> Subject: Re: ccd help X-Nntp-Posting-User: ritz Sender: news@news.interactive.net (USENET News) Organization: IBS Interactive, Inc. Lines: 46 Message-ID: <E0w7us.Ez2@news.interactive.net> References: <3270DC0C.15E4@loopback.com> <3275721D.628D@onthenet.com.au> <5582ut$meh@news.pcslink.com> <55i5nk$jca@uriah.heep.sax.de> <567dki$n3e@cantina.clinet.fi> <328826FB.FF6D5DF@webspan.net> <56er96$us@cantina.clinet.fi> <E0vrxI.I9E@news.interactive.net> <56g9pc$seo@node5.frontiernet.net> X-Trace: 848029635/19071 X-Nntp-Posting-Host: onyx.interactive.net Date: Fri, 15 Nov 1996 03:47:16 GMT Dan Foster <dsf@node5.frontiernet.net> wrote: :)In article <E0vrxI.I9E@news.interactive.net>, :)Chris Mauritz <ritz@interactive.net> wrote: :)>I get about 4 articles per second. The limiting factor is :)>the speed at which my newsfeeds can hand me articles since :)>the machine and the disks are relatively idle. Average :)>disk seeks (according to iostat) is about 7-7.5ms so I suspect :)>this machine is more than capable of trouncing a 7 article/sec :)>threshold. :)Yup, that was my impression, too. :)The problem may be if you're not using streaming mode to get :)articles in/out (as IHAVE is pretty slow when done for every article in :)order). I notice that when I don't run streaming mode... I get 4 arts/sec... :)when I run with streaming, I get 11 arts/sec. I'm pushing for 15 arts/sec :)which may be possible if I can shave 1.2ms off history lookups by reorg'ing :)dynamically my history filesystem a bit plus turning off mirroring. We also :)don't run RAID 5 (overhead for parity is too big for news). :)I must admit that I'm not sure if streaming/non-streaming is an issue with :)Cnews or anything other than INN, sorry. We're using a hacked nntp that incorporates inn's streaming mode so I can take either kind of feed. :)> I just need to find someone who can shove the :)>articles out the door fast enough for me to even remotely :)>stress the setup. If anyone has a stunningly fast news :)>server who'd like to feed me for a few days, I'd be happy :)>to add their feed to my current one and post the results. :)Email me if you're interested. Our setup uses a IBM SP/2 supercomputer :)with SSA disks (80 MB/sec technology) and a lot of patches to innd 1.4unoff4 :)for performance boosts. Wouldn't mind giving a 7 day feed or something. I'll email you separately, but I'd definitely be interested. I want to punish this box as much as I can to see if it's up to the task. Chris -- Christopher Mauritz | For info on internet access: ritz@interactive.net | finger/mail info@interactive.net OR IBS Interactive, Inc. | http://www.interactive.net/