From mboxrd@z Thu Jan 1 00:00:00 1970 MIME-Version: 1.0 In-Reply-To: References: <13426df10908300721id959c56pb3538ab3a5905bda@mail.gmail.com> From: Venkatesh Srinivas Date: Sun, 30 Aug 2009 13:40:55 -0400 Message-ID: To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net> Content-Type: text/plain; charset=UTF-8 Subject: Re: [9fans] Interested in improving networking in Plan 9 Topicbox-Message-UUID: 5c2c4c20-ead5-11e9-9d60-3106f5b1d025 On Sun, Aug 30, 2009 at 1:07 PM, erik quanstrom wrote: >> Simple example: file systems on Plan 9 are slow. Why is that? How do >> they work? How would you go about finding out how to make them faster? > > which ones? there are quite a number to choose from. > i've found that ken's fs beats the pants off nfs on similar > hardware with literally one cpu tied behind its back. Try this - build the source to charon over a 200ms link over 9p. Then try again over sshfs. Also, look at a single terminal with a local fossil install. Trace the path of an 'ls /'. Count the number of copies and context switches. Having the fastest file server in the world means nothing for file system performance when your path to it is a maze of twisty passages, all alike. -- vs