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=0.2 required=5.0 tests=BAYES_00,INVALID_MSGID, REPLYTO_WITHOUT_TO_CC autolearn=no autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 11307a,f7d969d93769b1bb X-Google-Attributes: gid11307a,public X-Google-Thread: fecf8,f7d969d93769b1bb X-Google-Attributes: gidfecf8,public X-Google-Thread: f4337,97c1afaa2414b3e2 X-Google-Attributes: gidf4337,public X-Google-Thread: 103376,f7d969d93769b1bb X-Google-Attributes: gid103376,public From: erdmann@ibm.net Subject: Re: Ada for OS/2 (was Re: Linux faster than OS/2...) Date: 1997/07/04 Message-ID: <5phted$suk$1@unlisys.unlisys.net>#1/1 X-Deja-AN: 254436496 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> <5peljs$i2p$1@gonzo.sun3.iaf.nl> Organization: Unlimited Surprise Systems, Berlin Reply-To: erdmann@ibm.net Newsgroups: comp.os.os2.setup.misc,comp.os.os2.programmer.misc,comp.os.os2.programmer.oop,comp.lang.ada Date: 1997-07-04T00:00:00+00:00 List-Id: In <5peljs$i2p$1@gonzo.sun3.iaf.nl>, Geert Bosch writes: >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. > I have re done my tests again based on the information in mind i did receive so far. The results for a 5 packages OS/2 PM program are: OS/2 : 107 sec Linux: 95 sec In order to get this result i did close all windows of the WPS displaying the filesystem. Now the difference in performance is about 10 percent. But this seems to be the best! Michael