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4k Read/Write speed very slow when select "Use AWE physical memory"

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#1 yygymcu

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Posted 08 February 2022 - 01:29 AM

Use CrystalDiskMark8 to test the performance of the ramdisk

 

Basic Tab:

Size:512MB

Allocate Memory Dynamically: uncheck

File System: NTFS

 

Advanced Tab:

Cluster Size: Default

Quick Format: uncheck

Enable NTFS Compression: uncheck

Use Mount Point: uncheck

Additional Parameters: empty

 

 

if check the "Use AWE physical memory" option, will get a very slow 4k read/write speed

SEQ1M(Q8T1):  Read 5208MB/s   Write  6435MB/s

RND1M(Q8T8):  Read 16527MB/s   Write  30410MB/s

RND4K(Q32T1):  Read 233MB/s   Write  222MB/s

RND4K(Q1T1):  Read 232MB/s   Write  224MB/s

 

if not check the option, can get a good performance:

SEQ1M(Q8T1):  Read 6153MB/s   Write  7360MB/s

RND1M(Q8T8):  Read 6034MB/s   Write  9123MB/s

RND4K(Q32T1):  Read 1307MB/s   Write  1061MB/s

RND4K(Q1T1):  Read 886MB/s   Write  785MB/s

 

I have used three pc to test, all of them got the similar results, is this a problem?


Edited by yygymcu, 08 February 2022 - 01:39 AM.


#2 yygymcu

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Posted 08 February 2022 - 03:36 AM

ImDisk Version: 2.0.10 

Download from: https://sourceforge....imdisk-toolkit/


Edited by yygymcu, 08 February 2022 - 03:47 AM.






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