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Author Topic: Is it possible completely turn off Disk Cache.?. Testing SSD performance?  (Read 5240 times)

tunedbytad

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Is it possible completely turn off Disk Cache.?. 

if so how?

I am doing testing on Disk Caching features effect on SSD performance?

that post is here:
http://macos9lives.com/smforum/index.php/topic,5455.0.html


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tunedbytad

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Anyone have any input at all?

Turning Disk Cache off has to be possible....
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I have a PMG4 problem
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teroyk

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Anyone have any input at all?

Turning Disk Cache off has to be possible....

Complete off might not possible. I think you need at least 4KB or 8 KB for write.
Even 8-bit computers have 512 bytes memory to cache writing to floppy disk,
although they write to disk before they return from write routine.

EDIT: Or there maybe can be some clever Direct Memory Access routine for read,
but who knows?
« Last Edit: May 11, 2020, 03:10:38 AM by teroyk »
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IIO

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wouldnt it be the speed test application“s job to ignore accessing the cache?
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IIO

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i guess what is more interesting for test results is to purge RAM / reboot before you test, in situations where you had 100 programs open already.
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