I am trying to diagnose a problem whereby a virus scanner (clam antivirus) is taking too long to scan attachments on a mail server. We have an attachment limitation of 20MB and an attachment of 7-20MB can take over 3 minutes to scan. This often causes the sending mail server to timeout and resend the mail.
In this case, my mail gateway is is a dual 3.06GHz Xeon with 1GB of ram and 2 36GB 15krpm drives in a raid-1 on a smart array 6i (cciss) controller. I am running FreeBSD 5.4-RELEASE-p1. Systat -vmstat reports the disk mirror is 100% busy at all times on this machine, with an average of around 300 tps at 15KB/t. This seems wrong to me, as these numbers are maintained even when the system doesn't otherwise appear busy. We don't seem to be swamped by log writes. How can I tell what's generating these disk writes? At the moment the 100% disk utilization is the only thing I can see that would cause the scanning delay. The machine overall is sluggish with file operations. -Will -- Will Saxon Systems Programmer, Network Services University of Florida Department of Housing Phone: (352) 392-2171 x10148 Email: [EMAIL PROTECTED] _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[EMAIL PROTECTED]"
