Hi Manfred, I'm using unixware 7 but couldn't compile your source with native cc, I had to compile it with gcc.
here are the results: Script started on Sat Dec 27 17:50:49 2003 /tmp 17:50:50: ./a.out MOVETEST called by non-superuser, running with normal priority. zerotest: -1073736628 ticks; zerotest: -4372 ticks; zerotest: -52 ticks; rep nop: 508 ticks; rep nop: 88 ticks; rep nop: 60 ticks; nop: 256 ticks; nop: 224 ticks; nop: 92 ticks; nop: 64 ticks; nop: 12 ticks; nop: 8 ticks; nop: 0 ticks; nop: -4 ticks; rep nop: 56 ticks; rep nop: 44 ticks; rep nop: 40 ticks; zerotest: -4 ticks; rep nop: 24 ticks; zerotest: -4 ticks; nop: 0 ticks; zerotest: -4 ticks; nop: -8 ticks; zerotest: -8 ticks; rep nop: 32 ticks; nop: -16 ticks; zerotest: -4 ticks; zerotest: -4 ticks; rep nop: 24 ticks; zerotest: -4 ticks; nop: -12 ticks; ^? /tmp 17:53:34: exit script done on Sat Dec 27 17:53:38 2003 Regards On Sat, 27 Dec 2003, Manfred Spraul wrote: > Date: Sat, 27 Dec 2003 12:22:45 +0100 > From: Manfred Spraul <[EMAIL PROTECTED]> > To: [EMAIL PROTECTED] > Subject: Re: [PATCHES] update i386 spinlock for hyperthreading > > Hi Olivier, > > I have attached rep_nop.cpp. It's a simple C program (unfortunately > filled with linux specific gccisms) that benchmarks the time for a > single rep;nop instruction, compared to a normal nop and nothing at all. > > Which OS do you use? I can try to build an app for FreeBSD, and it > should be possible to compile it under Windows with cygwin as well. > > Under Linux: > $ gcc -O2 -o rep_nop rep_nop.cpp > $ ./rep_nop > > Just run in for a few seconds and send back the output. Please add the > mailing list back into the cc list. > -- > Manfred > -- Olivier PRENANT Tel: +33-5-61-50-97-00 (Work) 6, Chemin d'Harraud Turrou +33-5-61-50-97-01 (Fax) 31190 AUTERIVE +33-6-07-63-80-64 (GSM) FRANCE Email: [EMAIL PROTECTED] ------------------------------------------------------------------------------ Make your life a dream, make your dream a reality. (St Exupery) ---------------------------(end of broadcast)--------------------------- TIP 1: subscribe and unsubscribe commands go to [EMAIL PROTECTED]
