Randall R Schulz wrote:
How much outbound bandwidth do you have? As a home ADSL user, I have so
little outbound speed that it hardly matters what is the pattern of
access.
I have almost 50kB/s, so if pieces are 256kB, I should get a disc access
every ~5 seconds. Interestingly, I get disc accesses more frequently
(every ~2 seconds) even though I turned on Azureus' own caching and its
prefetch feature that is supposed to reduce disc access while uploading.
It's a separate disc that only Azureus is accessing...
The
worst effect it's likely to have is to perturb the kernel disk / FS
cache, filling it with file data unused by any other application.
Yes, that is another thing. And it is probably not good for the disc to
move around every 2 seconds all day long.
Incidentally, if there are any Linux programmers reading, are there file
access options or modes that inhibit caching?
Use O_DIRECT when opening the file, this should do the job according to
"man 2 open". In the case of Azureus, the caching is useful in some
situations. If you are seeding only one or two 'small' files (~100MB) it
means Azureus can run without any disc access after a while.
Regards
nordi
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