Diagnosing packet loss
Ggatten at waddell.com
Tue Nov 22 21:15:28 UTC 2011
Well, 1% is not good but I've seen worse for sure! Sounds like you tried the obvious. I would recommend a different IP to rule out a dupe ip; else it must be NIC related - either hardware or driver. Also, perhaps swap cables and ports with a working machine and see if the problem follows or stays put.
----- Original Message -----
From: Kees Jan Koster [mailto:kjkoster at gmail.com]
Sent: Tuesday, November 22, 2011 02:33 PM
To: freebsd-questions at freebsd.org <freebsd-questions at freebsd.org>
Subject: Diagnosing packet loss
I am stuck with a machine that shows serious packet loss (about 1% of all traffic is dropped). I tried the obvious (new network cable, different switch port, different ethernet interface on the machine), but the problems remain.
Another machine that sits in the same rack and is hooked up to the same switch shows no such packet loss issues. The problematic machine is a dual Opteron with FreeBSD 8.2-STABLE from Thu Aug 11 14:05:47 CEST 2011.
The machine is lightly loaded. A MySQL slave is running, but the machine is not serving queries. Plus a Munin server process.
I am at a loss where to start diagnosing this. Can you advise me where to look? Are there network buffers that may be overflowing?
kjkoster at kjkoster.org
Change is good. Granted, it is good in retrospect, but change is good.
freebsd-questions at freebsd.org mailing list
To unsubscribe, send any mail to "freebsd-questions-unsubscribe at freebsd.org"
<div style='border:none;border-bottom:double windowtext 2.25pt;padding:0in 0in 1.0pt 0in'>
"This email is intended to be reviewed by only the intended recipient
and may contain information that is privileged and/or confidential.
If you are not the intended recipient, you are hereby notified that
any review, use, dissemination, disclosure or copying of this email
and its attachments, if any, is strictly prohibited. If you have
received this email in error, please immediately notify the sender by
return email and delete this email from your system."
More information about the freebsd-questions