Date: Mon, 26 Apr 1999 16:01:47 -0400 From: Dennis Rockwell <dennis@bbn.com> To: mwlucas@exceptionet.com Cc: jonny@jonny.eng.br, stable@FreeBSD.ORG Subject: Re: nmbclusters=4096 doesn't increase mbufs Message-ID: <199904262001.QAA07107@po1.bbn.com> In-Reply-To: Message from mwlucas@exceptionet.com <199904261944.PAA24025@easeway.com> .
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On 26 Apr, mwlucas@exceptionet.com wrote: > The machine in question frequently slows to a crawl. The IPFilter people > have specifically cited mbuf starvation as a classic cause of this > symptom. Run netstat -m when the system is crawling and see what you get, especially the denied and delayed numbers. > How can I determine how many mbufs a FreeBSD machine has at a given time? That's what netstat -m tells you; how many mbufs and clusters have been allocated, and how many of them are in use (ie, not on the freelists). > If 132 is the current high-water mark, and we actually have 4096 > available, I'll shut up and go away happy. That is precisely the case on other related systems I've dealt with; I cannot claim to be authoritative about this particular version of FreeBSD, but the output of netstat -m is similar enough that I would expect that the underlying mechanisms are the same. Dennis Rockwell dennis@bbn.com GTE Internetworking Powered by BBN +1-617-873-5745 Cambridge, MA +1-617-873-6091 (Fax) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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