From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: Date: Sat, 23 Sep 2006 09:32:17 -0400 From: "Russ Cox" To: "Fans of the OS Plan 9 from Bell Labs" <9fans@cse.psu.edu> Subject: Re: [9fans] Why are some apps so slow? In-Reply-To: <8ccc8ba40609221321w3dd7dc55m6747aa3c67d057cd@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <7d3530220609212231g4110c06ev96875a43c13ce968@mail.gmail.com> <8ccc8ba40609221321w3dd7dc55m6747aa3c67d057cd@mail.gmail.com> Topicbox-Message-UUID: c0052270-ead1-11e9-9d60-3106f5b1d025 > Anyone actually studied this? Anyone considered replacing this with, say, > put/get rpcs that do it all? In some cases there are multiple read (or write), > rounds, but many times, I see the 4 rpcs just to get a bunch of bytes. > This was a concern for us while using omero across slow network links. Of course, one easy solution to this is to keep the file descriptor open for more than one read or write. Then it's just one round trip. Russ