Messages in this thread |  | | From | (Harald Koenig) | Subject | Re: TCP/IP Checksumming | Date | Wed, 27 Nov 1996 08:51:21 +0100 (MET) |
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> # 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_opt: sum = 1a8a, min cycles 2455 > # csum_opt32: sum = 1a8a, min cycles 1434 > # csum_c: sum = 1a8a, min cycles 2626 > > csum_partial: sum = 1a8a, min cycles 674 > csum_simple: sum = 1a8a, min cycles 8219 > csum_opt: sum = 1a8a, min cycles 2286 > csum_opt32: sum = 1a8a, min cycles 1235 > csum_c: sum = 1a8a, min cycles 3494 > > This is on a 586/75.
here are my results for a PODP-83 in an ASUS SP3G
csum_partial: sum = 1a8a, min cycles 675 csum_simple: sum = 1a8a, min cycles 8220 csum_opt: sum = 1a8a, min cycles 2320 csum_opt32: sum = 1a8a, min cycles 1268 csum_c: sum = 1a8a, min cycles 3620
Harald -- All SCSI disks will from now on ___ _____ be required to send an email notice 0--,| /OOOOOOO\ 24 hours prior to complete hardware failure! <_/ / /OOOOOOOOOOO\ \ \/OOOOOOOOOOOOOOO\ \ OOOOOOOOOOOOOOOOO|// Harald Koenig, \/\/\/\/\/\/\/\/\/ Inst.f.Theoret.Astrophysik // / \\ \ koenig@tat.physik.uni-tuebingen.de ^^^^^ ^^^^^
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