Date: Thu, 15 Jul 1999 04:27:17 -0500 (EST) From: Alfred Perlstein <bright@rush.net> To: David Schwartz <davids@webmaster.com> Cc: Terry Lambert <tlambert@primenet.com>, Doug@gorean.org, scrappy@hub.org, beyssac@enst.fr, chat@FreeBSD.ORG Subject: RE: Known MMAP() race conditions ... ? Message-ID: <Pine.BSF.3.96.990715042605.14320S-100000@cygnus.rush.net> In-Reply-To: <000001bece6b$bcf66740$021d85d1@youwant.to>
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On Wed, 14 Jul 1999, David Schwartz wrote: > > > > Large RAID arrays. > > > > You mean software RAID, right? SCSI cables don't care what they > > are connected to. Hmmm. I could do a SCSI commercial: > > Would that that were true. But unfortunately, a lot of hardware RAID > controllers do care what driver they are talking to. And NT tends to get > premium effort from the manufacturer. I think this same issue with > Linux-versus-NT had a lot to do with the recent benchmark disasters. > > > > Applications requiring large numbers of threads. > > > > Balk. "Rodents of unusual size? I don't believe they exist...". > > Sadly, there are some problems that are very hard to solve any other way. > Especially when licensing requirements get in the way. > > I'll give you a contrived example, since I'm not at liberty to go into > details on the specifics of real examples. Suppose I might potentially have > to do 3,000 'gethostbyname's at the same time in a commercial product. On > NT, I can create 3,000 threads and call 'gethostbyname' in every one. Not > pretty, but it works. > > On FreeBSD, I'm basically screwed. I'd have to write me own resolver > library to do the job. Licensing problems prevent me from using pretty much > every nice resolver library out there. You seem to be quite knowledgeable, a BSD'd re-entrant gethostbyname would proabably be welcome in the repository. -Alfred To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-chat" in the body of the message
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