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=-1.3 required=5.0 tests=BAYES_00,INVALID_MSGID autolearn=no autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f4337,97c1afaa2414b3e2 X-Google-Attributes: gidf4337,public X-Google-Thread: fecf8,f7d969d93769b1bb X-Google-Attributes: gidfecf8,public X-Google-Thread: 103376,f7d969d93769b1bb X-Google-Attributes: gid103376,public X-Google-Thread: 11307a,f7d969d93769b1bb X-Google-Attributes: gid11307a,public From: Geert Bosch Subject: Re: Ada for OS/2 (was Re: Linux faster than OS/2...) Date: 1997/07/03 Message-ID: <5peljs$i2p$1@gonzo.sun3.iaf.nl>#1/1 X-Deja-AN: 254238796 References: <5ovqj1$4ul$1@unlisys.unlisys.net> <5p06jo$c1r$2@elektron.et.tudelft.nl> <5p38a7$2df$2@unlisys.unlisys.net> <5p93ov$9ro@news.mr.net> <5p9tpm$e90$1@unlisys.unlisys.net> <5pbea3$a0v@corn.cso.niu.edu> Organization: La Calandre Infortunee Newsgroups: comp.os.os2.setup.misc,comp.os.os2.programmer.misc,comp.os.os2.programmer.oop,comp.lang.ada Date: 1997-07-03T00:00:00+00:00 List-Id: In comp.lang.ada system@niuhep.physics.niu.edu wrote: ``I would not necessily expect OS/2's compiler to have the same effeciency as Linux's. Assuming the hardware is identical the other question I have (not having read the original post) is whether you were running a GUI on Linux?'' Please use emxload -e -gnat before doing any performance tests. This keeps the GNAT binaries in VM (real memory or swap space) instead of reloading and relocating them every time they are needed. This makes a huge difference in speed, esp. with small files. Because filesystem caching in Linux is better, this is less of an issue with Linux. Also keep in mind that you are mostly testing operating systems and I/O speed. The actual code that will be executed is almost the same, so given enough memory and fast enough I/O the performance will be not much different on Linux as on OS/2. Regards, Geert