Comments on: PEBKAC http://www.computerdefense.org/2007/02/pebkac/ Sharing my thoughts with the world. Wed, 16 Nov 2011 02:58:20 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: Cd-MaN http://www.computerdefense.org/2007/02/pebkac/comment-page-1/#comment-3306 Cd-MaN Thu, 22 Feb 2007 15:40:15 +0000 http://www.computerdefense.org/?p=269#comment-3306 Hello. I like your blog more and more. I too find that there are too many "industry experts" out there who not only don't understand the matter at hand, but also make bold claims on their blog, in the media, etc. About the memory usage: it is good when it's higher. Preferable it should be 100%. A thing that many people don't realize is that there are several types of caches in the memory which accelerate for example hard disk operations. Modern OSs are smart enough to use all the "free" memory available for cache (so that you have a big probability of having a cache hit when doing disk operations) and scale back the cache when user programs need the memory. To put it an other way: why do you have 1G of memory? to look at it or to actually use it? :-) Hello.

I like your blog more and more. I too find that there are too many “industry experts” out there who not only don’t understand the matter at hand, but also make bold claims on their blog, in the media, etc.

About the memory usage: it is good when it’s higher. Preferable it should be 100%. A thing that many people don’t realize is that there are several types of caches in the memory which accelerate for example hard disk operations. Modern OSs are smart enough to use all the “free” memory available for cache (so that you have a big probability of having a cache hit when doing disk operations) and scale back the cache when user programs need the memory. To put it an other way: why do you have 1G of memory? to look at it or to actually use it? :-)

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