Date: Fri, 26 Jun 2015 11:59:43 +0200 From: Gerrit =?ISO-8859-1?Q?K=FChn?= <gerrit.kuehn@aei.mpg.de> To: Rick Macklem <rmacklem@uoguelph.ca> Cc: freebsd-net@freebsd.org, carsten aulbert <carsten.aulbert@aei.mpg.de> Subject: Re: NFS on 10G interface terribly slow Message-ID: <20150626115943.7d0b441cda2c6cc5b817b181@aei.mpg.de> In-Reply-To: <623856025.328424.1435279751389.JavaMail.zimbra@uoguelph.ca> References: <20150625145238.12cf9da3b368ef0b9a30f193@aei.mpg.de> <623856025.328424.1435279751389.JavaMail.zimbra@uoguelph.ca>
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On Thu, 25 Jun 2015 20:49:11 -0400 (EDT) Rick Macklem <rmacklem@uoguelph.ca> wrote about Re: NFS on 10G interface terribly slow: RM> Recent commits to stable/10 (not in 10.1) done by Alexander Motin RM> (mav@) might help w.r.t. write performance (it avoids large writes RM> doing synchronous writes when the wcommitsize is exceeded). If you can RM> try stable/10, that might be worth it. Ok, I'll schedule an update then, I guess. OTOH, Scott reported that a similar setup is working fine for him with 10.0 and 10.1, so there is probably not much to gain. I'll try anyway... RM> Otherwise, the main mount option you can try is "wcommitsize", which RM> you probably want to make larger. Hm, which size would you recommend? I cannot find anything about this setting, not even what the default value would be. Is this reflected in some sysctl, or how can I find out what the actual value is? cu Gerrit
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