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Path: sserve!newshost.anu.edu.au!munnari.oz.au!news.Hawaii.Edu!ames!elroy.jpl.nasa.gov!usc!zaphod.mps.ohio-state.edu!uwm.edu!ogicse!psgrain!percy!agora!rgrimes From: rgrimes@agora.rain.com (Rodney Grimes) Newsgroups: comp.os.386bsd.bugs Subject: Re: Excessive Interrupt Latencies Message-ID: <C409MC.n1D@agora.rain.com> Date: 16 Mar 93 23:37:22 GMT Article-I.D.: agora.C409MC.n1D References: <GENE.93Mar15115756@stark.stark.uucp> <C3yyKD.34y@agora.rain.com> <1993Mar16.093636.29923@gmd.de> <g89r4222.732307558@kudu> Organization: Open Communications Forum Lines: 45 g89r4222@kudu.ru.ac.za (Geoff Rehmet) writes: >In <1993Mar16.093636.29923@gmd.de> veit@fanoe.gmd.de (Holger Veit) writes: >>In article <C3yyKD.34y@agora.rain.com>, rgrimes@agora.rain.com (Rodney Grimes) writes: >>|> gene@stark.uucp (Gene Stark) writes: >>|> >>[...] >>|> Bruce Evans had identified the spl code as the cause of this some 6 to 9 >>|> months ago. He has some outstanding code that cuts the interrupt latency >>|> down to closer to the ideal for a 386/486 machine, he also has version >>|> of a com driver that I have seen run at 115k baud without SILO overflows. >>|> The code is fairly expermintal in nature and is VERY intrusive. Some day >>|> it well be rolled into the main 386bsd code, but for now go ask archie >>|> where to find npx-0.4.tar.Z and intr-0.0.tar.Z. >>|> >A Question that might be better answered by Jordan and co. - when >will we see patches for the com. drivers in the >official-unofficial patchkit? - I've burnt my fingers enough >with 3rd party patches. (I case you haven't guessed, I really >like some fixed com drivers.) Well, I am one of and co., so here goes. We are very busy tring to kill the bugs that where in patches84-110, we are very close to being done with that. This well be released as patchkit0.2.2, I am not going to go into details of what else it includes until it is released to the net. The com drivers are on the "work to be done" list, there is currently not a schedule for them. About all's I can say on that one is some day, some day soon.... I recomend that you get Cdg's com drivers from agate, that is the work that the patchkit well be based upon, probably verbatim as the are on agate when we get to it... If you find bugs in those com drivers send them to Chris, not to the patchkit coordinator (Jordan) or to me, we well coordinate with Chris on the final version to put in the patchkit... -- Rod Grimes rgrimes@agora.rain.com Accurate Automation Company All opinions belong to me and my company! Get your free copy of 386bsd from agate.berkeley.edu:/pub/386BSD via ftp! An out of work contractor... You need unix work done.... Send me your project!