Date: Tue, 16 Jul 2002 11:00:22 -0400 (EDT) From: Andrew Gallatin <gallatin@cs.duke.edu> To: ntai@mac.com Cc: freebsd-stable@freebsd.org Subject: Re: mbuf clusters behavior (NMBCLUSTERS) Message-ID: <15668.13574.480189.404472@grasshopper.cs.duke.edu> In-Reply-To: <867kjvoj9f.wl@mac.com> References: <86k7nwwttv.wl@mac.com> <867kjvoj9f.wl@mac.com>
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Naoyuki Tai writes: > > If someone can answer this question, I can probably start troubleshoot > the problem. > > After nfs server uses up the mbuf clusters, how are the mbuf clusters > flushed? An nfs server does not use up the clusters; data is copied from clusters into the buffer cache, then written to disk. > Should I try to change "maxusers 0" to a number like 10? No! > One thing I forgot to mention is that the file system uses soft update. > Would it matter? No. None of this matters. You're getting killed by lots of IP frags because of RH Linux's stupid 16K UDP read/write defualts. As I suggested in my previous message, you should reduce net.inet.ip.maxfragpackets and reduce the read/write size the linux clients are using (change the default in their fstabs). Drew To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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