Messages in this thread |  | | Date | Fri, 15 Nov 1996 07:00:31 -0500 (EST) | From | Kenneth Albanowski <> | Subject | Re: Linux & ECC memory |
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On Thu, 14 Nov 1996, Richard B. Johnson wrote:
> Since RAM access happens so quickly, keeping statistics on corrections > that have occurred could seriously impact performance. The performance of > VAXes was not seriously affected because they were soooooo sloooow to > begin with.
I'm not so sure about that. Incrementing a counter on an ECC trigger doesn't seem impossible. (Hmm. Unless the ECC isn't a compare-and-fix cycle, but rather a discrete chunk of logic that always applies the math without looking at what it is doing. I'm not knowledgable enough about the algorithms involved to say for sure.)
And, to switch it around, if the ECC is being used often enough to degrade performance, wouldn't you want to know about it? (Especially since an ECC is by its nature a statistical operation. Multi-bit errors can go undetected, and even be miscorrected.)
-- Kenneth Albanowski (kjahds@kjahds.com, CIS: 70705,126)
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