From mboxrd@z Thu Jan 1 00:00:00 1970 From: erik quanstrom Date: Sun, 9 Jan 2011 16:59:44 -0500 To: 9fans@9fans.net Message-ID: <8b7978fc1882cac9d7511deaf3f179ab@ladd.quanstro.net> In-Reply-To: <20110109211753.79CFB5B42@mail.bitblocks.com> References: <16094d5a594bfa72dd0e9ac6f3f8b31c@plug.quanstro.net> <20110109195426.D1ED35B42@mail.bitblocks.com> <20110109211753.79CFB5B42@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: 931951fa-ead6-11e9-9d60-3106f5b1d025 > - other local optimizations (does plan9 pay marshalling, > unmarshalling cost for node local communication?) not unless it hits the mount driver. since a user level fs is a 9p server, it is clear that io must go through the mnt driver and kernel fileservers or pipes need not. > - pushing performance sensitive code into kernel (to reduce > context switches). i never understood the point of plan 9 to be to hold the performance crown at all costs. - erik