From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=ham autolearn_force=no version=3.4.4 X-Google-Thread: 103376,7d747ac241d5a3d8 X-Google-NewGroupId: yes X-Google-Attributes: gida07f3367d7,domainid0,public,usenet X-Google-Language: ENGLISH,UTF8 Path: g2news2.google.com!news3.google.com!feeder1.cambriumusenet.nl!feed.tweaknews.nl!193.201.147.78.MISMATCH!feeder.news-service.com!news.netcologne.de!newsfeed-fusi2.netcologne.de!news.swapon.de!eternal-september.org!feeder.eternal-september.org!.POSTED!not-for-mail From: Simon Wright Newsgroups: comp.lang.ada Subject: Re: Performance techniques used in AWS Date: Tue, 14 Jun 2011 12:18:11 +0100 Organization: A noiseless patient Spider Message-ID: References: <4df5a4bc$0$2120$742ec2ed@news.sonic.net> <4DF63AAC.5050708@obry.net> <4df6ee43$0$2131$742ec2ed@news.sonic.net> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Injection-Info: mx04.eternal-september.org; posting-host="dFCm8HWntFqmDIilBLqEJQ"; logging-data="28781"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX18+LyJyMdPHL/d1DbQoLjkPccEbJq4aI2U=" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.3 (darwin) Cancel-Lock: sha1:85umPCuF3IW+mKzty81p+Pf1V7k= sha1:XJhdQu/L8muUWQyC8HZwGve1R94= Xref: g2news2.google.com comp.lang.ada:20790 Date: 2011-06-14T12:18:11+01:00 List-Id: "Yannick DuchĂȘne (Hibou57)" writes: > Le Tue, 14 Jun 2011 12:40:15 +0200, Simon Wright > a Ă©crit: >> I guess the performance will depend heavily on select(2) vs poll(2) or >> epoll. > According to this > http://monkey.org/~provos/libevent/libevent-benchmarks.jpg > and that > http://monkey.org/~provos/libevent/libevent-benchmark2s.jpg > epoll and kqueue are the more efficient I see that libev[ent] abstracts away the actual polling mechanism, which is good. Of course, what mechanism you can actually use depends on the OS: I think epoll is a Linux-specific service? - certainly no sign of it on this Mac.