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Old 08-21-2004, 04:54 AM  
iXi
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Join Date: Nov 2002
Posts: 220
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Quote:
ftp unbuffered file -> socket -> socket [ftp.exe] -> null
- Parameters: FILE_FLAG_NO_BUFFERING, SO_SNDBUF = 0, 3 * 8kb application write buffer, ftp.exe
- Result: ~60mb/sec
- Conclusion: User mode cpu usage reduced significantly (to 1-2%), while kernel mode cpu usage increased somewhat. Greatest benefits when used asynchronous devices. (scsi, network shares)
d1 does io needs special buffer settings for asynchronous devices? because i'm using some scsi raids..

cya
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