From mboxrd@z Thu Jan 1 00:00:00 1970 From: erik quanstrom Date: Sun, 9 Jan 2011 17:02:24 -0500 To: 9fans@9fans.net Message-ID: <21838e5aae362752a131f1c7ed5fa77b@ladd.quanstro.net> In-Reply-To: References: <16094d5a594bfa72dd0e9ac6f3f8b31c@plug.quanstro.net> <20110109195426.D1ED35B42@mail.bitblocks.com> <20110109213849.939D75B42@mail.bitblocks.com> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Subject: Re: [9fans] fs performance Topicbox-Message-UUID: 93246194-ead6-11e9-9d60-3106f5b1d025 > John did do some measurement of file system times via the trace device > we wrote. I think it's fair to say that the IO path for fossil is > considerably slower than the IO path for kernel-based file systems in > Linux: slower as in multiples of 10, not multiples. There's a fair > amount of copying, allocation, and bouncing in and out of the kernel, > and this activity does not come cheap. that is, the pool library must die. - erik