Date: Wed, 21 Jul 2004 17:46:25 -0400 From: Jesse Guardiani <jesse@wingnet.net> To: fcash-ml@sd73.bc.ca Cc: mobile@freebsd.org Subject: Re: Anyone following RELENG_5_2? Message-ID: <200407211746.25914.jesse@wingnet.net> In-Reply-To: <4850.192.168.0.85.1090444093.squirrel@192.168.0.85> References: <40FD4EB3.10993.2690B26F@localhost> <200407211647.49554.jesse@wingnet.net> <4850.192.168.0.85.1090444093.squirrel@192.168.0.85>
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On Wednesday 21 July 2004 17:08, you wrote: > > Jesse Guardiani wrote: [...] > > ClamAV and sqwebmail are the thorns in my flesh. ClamAV hangs > > constantly, and I had to setup a monit daemon to check on it every 30 > > seconds and restart it if necessary. sqwebmail, while an excellent and > > extremely high performance webmail interface, lacks polish in it's UI. > > In addition, sqwebmail tends to go insane and spawn multiple CPU > > hungry child processes. I have to watch it constantly. > > Really? We've never had problems with ClamAV (currently running > 0.72). clamdscan has been running almost non-stop for about 4 months > now. The only time it's stopped is for upgrades, or when I do > something stupid and crash the server. :) The daemon is started via > rc.d and messages are passed to it via amavisd-new. Between ClamAV > and SpamAssassin, the mail server blocks about 30,000 messages a week. Yeah, really. I've sent multiple emails to the ClamAV folks, but they can't/won't help me figure it out. And while I have some C programming experience, I'm not very good at tracking down obscure, intermittent memory related bugs in other people's C code, especially in a live system, so I've kind of given up. I'm convinced it's a bug though. After all, you can LOOK at C code wrong and introduce a bug. > > Having said all that, the server itself is a 500Mhz Dell PIII running > > rather slow hardware RAID 5. The CPU is more than adaquate for > > everything but virus scanning, which I may break off into a higher > > horsepower box someday. > > Currently, our mail filtering server is a dual-AthlonMP 2200+ with 3.5 > GB RAM with 3x200 GB HD in a RAID5 array (3Ware Escalade 7506). It's > very much overkill since all it does nowadays is virus and spam > filterng, but it was originally supposed to be our IMAP, webmail, and > SMTP server. :) Maybe that's why ClamAV doesn't bomb on your machine. Higher horsepower? Dunno... > > As for 10,000 messages, I currently have a vpopmail mailing list > > folder that has 10474 messages. I can check it with no problems, but > > it's access times are bordering on what I consider "slow". I mainly > > use GMANE and KNode for mailing list reading these days. > > Never could narrow it down to either a FreeBSD issue or a Courier-IMAP > issue, or a combination of both. Running with SCHED_ULE, I could > never get KMail or SquirrelMail to scan a folder with 10,000+ messages > in it. The server would crash due to not enough KVA errors or > spinlock errors. Running with SCHED_4BSD, I would get hardlocks when > accessing large folders. > > Switching to Cyrus, though, allows me to access, view, and even move > around, folders with 25,000+ messages in it without affecting the CPU > load too much. > > Since we won't be using Courier or Cyrus for IMAP anymore, I never > really investigated too deeply. We're moving to IBM's Workplace2 > environment for e-mail next month. To be honest, I really haven't been impressed with FreeBSD 5.x yet. It's been more trouble than it's worth so far. I run 5.2.1 on my laptop, but I've been having visions of Gentoo Linux on my servers of late. I run Gentoo on my machine at home, and it's *nice*. How do you like Cyrus? I considered it when I first designed my mail server, but it seemed kind of obscure and university based, so I decided against it. I've since wondered many times if I made the right choice. I guess I just need to install postfix and cyrus and see if I like them. -- Jesse Guardiani, Systems Administrator WingNET Internet Services, P.O. Box 2605 // Cleveland, TN 37320-2605 423-559-LINK (v) 423-559-5145 (f) http://www.wingnet.net
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