Messages in this thread | | | From | (Matthias Urlichs) | Subject | Re: TCP/IP Checksumming | Date | 27 Nov 1996 23:37:38 +0100 |
| |
In linux.dev.kernel, article <199611270135.UAA00826@neko.binary9.net>, "Nicholas J. Leon" <lists-nicholas@binary9.net> writes: > > Heiko Schroeder was overheard whispering ... > # OK, I just hacked a Linux version of a "test-suite" using the > # cycle counter. (I'm using a Pentium Pro, so I can access the rdtsc > # instruction in user code.) > # > # csum_partial: sum = 1a8a, min cycles 1406 > # csum_simple: sum = 1a8a, min cycles 6846 > # csum_c: sum = 1a8a, min cycles 2626 > > csum_partial: sum = 1a8a, min cycles 674 > csum_simple: sum = 1a8a, min cycles 8219 > csum_c: sum = 1a8a, min cycles 3494 > > This is on a 586/75. Could someone explain to me why the values would > be so different than the before mentioned ones? For example, my
Umm, might the explanation be the difference between a 586 and a 686 ???
-- A Puritan is someone who is deathly afraid that someone, somewhere, is having fun. -- Matthias Urlichs \ noris network GmbH / Xlink-POP Nürnberg Schleiermacherstraße 12 \ Linux+Internet / EMail: urlichs@noris.de 90491 Nürnberg (Germany) \ Consulting+Programming+Networking+etc'ing PGP: 1024/4F578875 1B 89 E2 1C 43 EA 80 44 15 D2 29 CF C6 C7 E0 DE Click <A HREF="http://info.noris.de/~smurf/finger">here</A>. 42
| |