From mboxrd@z Thu Jan 1 00:00:00 1970 To: <9fans@9fans.net> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Date: Mon, 1 Aug 2011 12:12:22 -0500 From: EBo In-Reply-To: References: <9ede6397cd5d6431cfc44a2504cdae6f@swcp.com> Message-ID: <81c4d9d5aef94a678b81f7fc7a11cf80@swcp.com> User-Agent: RoundCube Webmail/0.4-trunk Subject: Re: [9fans] =?utf-8?q?nsec_limits=3F?= Topicbox-Message-UUID: 098e863e-ead7-11e9-9d60-3106f5b1d025 On Mon, 1 Aug 2011 08:57:13 -0700, ron minnich wrote: > What kind of timing tests? What kind of accuracy are you looking for? > What platform? It is for the HARE project (Plan 9 on the BG/P). I am basically running direct comparisons against Brazil, which also used nsec. I need to calc the time used in each of several steps in starting, stopping, and running tasks as well as the time it takes to distribute input data and accumulate the results. From the published results I'm guessing that I need millisecond resolution, but not sure of the requirements. At this point I am following after Brazil's original implementation, however I also built a little tool to cache timestamps in memory and grab them from anywhere in the code. If you have other suggestions I would love to hear them. EBo --