From mboxrd@z Thu Jan 1 00:00:00 1970 From: George Beshers Subject: Re: iozone reality check: was zam, please discuss this Date: Wed, 23 Jun 2004 14:36:48 -0400 Message-ID: <40D9CDC0.30503@comcast.net> References: <40D8EB0D.6050109@namesys.com> <20040623063049.GA5080@backtop.namesys.com> <40DA58BC.1060203@namesys.com> <40D9C5F5.7010605@comcast.net> <40DA62E0.2050803@namesys.com> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: list-help: list-unsubscribe: list-post: Errors-To: flx@namesys.com In-Reply-To: <40DA62E0.2050803@namesys.com> List-Id: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: Hans Reiser Cc: ReiserFS List Hans Reiser wrote: > > When you say lots, do you mean close to or more than physical ram? > My recollection is that it was on the order of 70% of physical ram; there was significant other activity on the system so it was getting flushed to disk some of the time, but I was not actually measuring that. I was looking at cache-coherency across processor nodes and noticed that most of the pages in the mmap'd area were touched (modified).