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cpu cache explained -->Re 5.0.5 MP system running slowly with 1Gb RAM

There is no linear relationship between size of cache and amount of RAM it can cache. This is a common misconception.



Title Last Comment
CPU sucking processes  
- Slowness can come from many causes and you really need to identify WHY a system is slow before throwing fixes at it -

100% CPU Load  
- Getty processes accumulating too much cpu time: run two "ps -e"'s, waiting about 10 seconds between, and redirecting them to different files. -

taskset for CPU affinity   2012/01/10 TonyLawrence
- SMP operating systems have choices when it comes to scheduling processes: a new or newly rescheduled process can run on any available cpu. However, while it shouldn't matter where a new process runs, an existing process should go back to the same cpu it was running on simply because the cpu may still be caching data that belongs to that process. -

Mac OS X on Intel CPU's  
- Apple's switch to Intel has generated tremendous amounts of speculation and even some concern. -

64 bit adoption slow  
- Sixty four bit will come eventually, but right now there is no reason to rush to jump to it. -

Booting SCO_OSR5- CPU  
- I think it's unfortunate that most programmers and administrators don't have much knowledge of hardware or indeed much interest in it. -

(SCO Unix)How can I monitor cpu usage?  
- (SCO Unix) This script is useful. (change "mawk" to "awk" if you don't have it- it still runs, just more slowly). -

(SCO Unix)I licensed an additional CPU but the system doesn't see it or use it.  
- (SCO Unix) You need to actually install the SMP software. It's on your original installation CD, the same one you installed the OS from. Stick that back in, run "custom" and find it on there. -

cpu cache explained -->Re 5.0.5 MP system running slowly with 1Gb RAM  
- Explaining cache design vs. memory amount cached. There is no linear relationship between size of cache and amount of RAM it can cache. This is a common misconception. -

 
 
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