Date: Tue, 17 Jun 2003 09:09:22 -0400 From: Bill Moran <wmoran@potentialtech.com> To: Jaime <jaime@snowmoon.com> Cc: freebsd-questions@freebsd.org Subject: Re: ping: sendto: No buffer space available Message-ID: <3EEF1302.8060908@potentialtech.com> In-Reply-To: <20030617075240.L94567@malkav.snowmoon.com> References: <20030617075240.L94567@malkav.snowmoon.com>
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Jaime wrote: > I've been noticing for a few days that my network's performance is > less than good. When I checked on it, I found that the firewall > attempting to ping the ISP's DNS resolver would have "hiccups." The ISP > claims that there is nothing wrong on the T-1 line and that there is a > problem on the ethernet interface of the router (which leads to the > firewall). > > The pings will run just fine for several minutes at a time and > then begin to output this: > > ping: sendto: No buffer space available > > This will go on for anywhere from 15 seconds to 5 minutes, during > which we're effectively not connected to the Internet at all. An > occasional ping will work, but only about 1 in 20 and it seems random. > Then, just as suddenly, the connection will work again. > > I'm not completely sure what this means, but I found the following > command in the mailing list archives: > > cerberus# sysctl -a | grep intr_qu > net.inet.ip.intr_queue_maxlen: 50 > net.inet.ip.intr_queue_drops: 6987 > > Does anyone have any suggestions or tips? What make/model of NIC are you using? The only time I've ever seen this, the only thing that solved the problem was swapping the network card out for a better one. That's not to say it isn't a driver problem, as the new network card used a different driver as well. -- Bill Moran Potential Technologies http://www.potentialtech.com
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