Date: Thu, 24 Jan 2002 13:47:59 +0500 From: Sergey Gershtein <sg@ur.ru> To: Doug White <dwhite@resnet.uoregon.edu> Cc: freebsd-stable@FreeBSD.ORG Subject: Re[3]: Strange lock-ups during backup over nfs after adding 1024M RAM Message-ID: <30787244167.20020124134759@ur.ru> In-Reply-To: <20020123125856.C56623-100000@resnet.uoregon.edu> References: <20020123125856.C56623-100000@resnet.uoregon.edu>
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On Thursday, January 24, 2002 you wrote: >> It's already set to 512, is it too high? We did not rebuild the >> kernel after adding memory, it worked fine with maxusers 512 and >> 1024M RAM. DW> Yes. You've scaled the tables so large that when you double the RAM, the DW> page tables + maxusers 512 tables > KVM. DW> Also, there are problems going from 1GB to 2GB on early 4.4-STABLE ... DW> when did you build last? It was last rebuilt on September 28th. I'm going to re-cvsup 4.4-STABLE today and rebuild everything with maxusers 128. Thanks! >> maxusers 512 DW> Drop this to 128, definitely. If you're doing a lot of network, monitor DW> your mbuf usage and override that if necessary. It's a rather heavily loaded web server (average of 25 requests/sec, 100kb/sec), so I guess it's a lot of network. Could you please point me to the right direction where to read about mbuf monitoring? I found some info in the Handbook (6.10 Tuning Kernel Limits), but there are not much unfortunately. DW> Doug White | FreeBSD: The Power to Serve DW> dwhite@resnet.uoregon.edu | www.FreeBSD.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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