Date: Mon, 10 Jan 2000 14:04:14 -0500 From: Naief BinTalal <naief@cyfari.com> To: Majid Almassari <majid@ibroadcast.net> Cc: "questions@FreeBSD.ORG" <questions@FreeBSD.org> Subject: Re: netstat -m Message-ID: <20000110140413.A85488@cyfari.com> In-Reply-To: <016001bf5b52$3a0d9dc0$8e1d91d8@ibroadcast.net>; from majid@ibroadcast.net on Mon, Jan 10, 2000 at 10:05:30AM -0000 References: <016001bf5b52$3a0d9dc0$8e1d91d8@ibroadcast.net>
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On Mon, Jan 10, 2000 at 10:05:30AM -0000, Majid Almassari wrote: > The netstat -m output for one of the server is the following: > 15136/15936 mbufs in use: > 14820 mbufs allocated to data > 316 mbufs allocated to packet headers > 14525/15066/16384 mbuf clusters in use (current/peak/max) > 32124 Kbytes allocated to network (96% in use) > 0 requests for memory denied > 0 requests for memory delayed > 0 calls to protocol drain routines > > My question is there a way to increase the Kbytes allocated to network in Kernel settings. Currently it is fluctuating between 95%-97%. Help is appreciated. > Hi Majid The number of mbuf clusters is determined by the formula n = 512 + mu * 16 in param.c (n => number of clusters, mu => maxusers as specified in the kernel config file). In your case 992 users (16384 clusters). I don't if you have set your maxusers to 992 or used the option, only remember that the maxusers number is a metric that sets many things including the number of mbuf clusters. Therefore do not set it very high, if all you need is to beef up a certain area ( such as the network buffer size in your case). Use options NMBCLUSTERS=### in your kernel config file. Also remember that each cluster is 2 kB in size. This makes the size of your current buffer 32 MB. Go up a notch .. maybe 48 MB. Add the line options NMBCLUSTERS=24576 to your kernel config file. make depend && make && make install reboot. I hope this help :) Cheers, BBTG -- ------------------------------------------------------- Naief BinTalal | naief@cyfari.com ------------------------------------------------------- "A rock pile ceases to be a rock pile the moment a single man contemplates it, bearing within him the image of a cathedral" -- Antoine de Saint-Exupery ------------------------------------------------------- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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