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Article #55059BogoMIPS
From: George Durbridge
Date: Tue, 05 Aug 1997 00:00
Date: Tue, 05 Aug 1997 00:00
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Does anyone know if BogoMIPS is affected by external cache ? I added 256k cache to a m/board which previously had nil. It was recognized by the bios, but the BogoMIPS was unaltered :( It may be duff cache, or the wrong sort, but on looking closely at the table in the BogoMIPS HOWTO, it seemed that processors with no cache often returned precisely the same numbers as similar processors with, and that the amount of cache made no difference. There are a few results marked nocache which are very low, but those are 486's running so slow that the internal cache must have been disabled. It's a no-name board with a UMC chipset, running an IBM 5x86/100. Not a flash board, and no doubt even slower because it's a VLB/PCI hybrid: that no doubt explains why the BogoMIPS number is 40 instead of 50. But it hasn't been hacked to pretend it has cache when it has none. -- /* George Durbridge, Melbourne, Victoria, Australia */ /* tel 61 (03) 9280 3390 fax 61 (03) 9280 3355 */ /* gdurb@melbourne.dialix.com.au */
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 102983,a3d3ec3c358ba22e,start X-Google-Attributes: gid102983,public From: gdurb@melbourne.dialix.com.au (George Durbridge) Subject: BogoMIPS Date: 1997/08/05 Message-ID: <870784374.844363@edison.dialix.com.au> X-Deja-AN: 263024500 Organization: DIALix Internet Services Newsgroups: aus.computers.linux