From mboxrd@z Thu Jan 1 00:00:00 1970 MIME-Version: 1.0 In-Reply-To: <20121128193840.29418B827@mail.bitblocks.com> References: <0263c93c2d57900638e664f1b538a76d@brasstown.quanstro.net> <0cf8de222eb5fa81721e8bcf4dd4e875@brasstown.quanstro.net> <20121128185827.863CFB827@mail.bitblocks.com> <20121128193840.29418B827@mail.bitblocks.com> Date: Wed, 28 Nov 2012 20:58:03 +0000 Message-ID: From: Charles Forsyth To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net> Content-Type: text/plain; charset=UTF-8 Subject: Re: [9fans] sleep(2) historical question Topicbox-Message-UUID: ec45cc62-ead7-11e9-9d60-3106f5b1d025 RTT computation isn't the problem. you're going to use a multicore numa 64-bit processor to clock edges into a simple device register at microsecond resolution without any attempt at timeliness? seriously? On 28 November 2012 19:38, Bakul Shah wrote: > RTT > computation as Erik pointed out. If you want to minimize > latency in usermode drivers and deal with simple(r) hardware.