Date: Wed, 26 Jan 2000 20:07:39 -0500 (EST) From: Bosko Milekic <bmilekic@dsuper.net> To: Doug White <dwhite@resnet.uoregon.edu> Cc: Kris Kirby <kris@hiwaay.net>, hackers@FreeBSD.ORG Subject: Re: Acceptable MBUF levels? Message-ID: <Pine.OSF.4.05.10001262001540.22674-100000@oracle.dsuper.net> In-Reply-To: <Pine.BSF.4.21.0001261437100.6474-100000@resnet.uoregon.edu>
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On Wed, 26 Jan 2000, Doug White wrote: >When people refer to mbufs, they refer to mbuf clusters, of which there's >a fixed number. The kernel will allocate more mbufs as necessary. Uhm, actually, mbufs are also allocated from mb_map. Thus, they are also capped. (Unless I'm missing something big again... :-) ) >The usual rule of thumb is that the peak should never exceed 75% of the >max mbufs in the system to allow for sufficient overhead in extreme >situations. In this case you're at 80%, so you should probably recompile >your kernel and bump maxusers. Actually, for mbufs and mbuf clusters, you should increase NMBCLUSTERS, which will serve as an indication of allocate-able clusters as well as, ultimately, mbufs. -- Bosko Milekic Email: bmilekic@dsuper.net To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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