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Re^2: Using Net::FTP::Throttle

by joetesta (Novice)
on Aug 02, 2012 at 17:57 UTC ( #985085=note: print w/ replies, xml ) Need Help??

in reply to Re: Using Net::FTP::Throttle
in thread Using Net::FTP::Throttle

Thanks BrowserUK!

With the max-burst doubled, I was seeing better throughput. So I doubled it again and it looks like now I'm seeing around 50mbps

Regarding the block size, I thought the same, however it seemed that anything over 4K was not helping, and I only got better throughput by decreasing it to 1024 and finally 512. Perhaps now that I've increased max-burst, a larger block size wouldn't hurt?

at least this is working now; I wonder if Net::FTP::Throttle should be updated to increase that max-burst? How does stuff like that get done, should I be prompting someone or going at it myself?

kind regards, Joe
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Re^3: Using Net::FTP::Throttle
by BrowserUk (Pope) on Aug 02, 2012 at 23:06 UTC
    How does stuff like that get done, should I be prompting someone or going at it myself?

    I'd start by sending the author an email pointing to this thread at perlmonks and go from there.

    With regard to blocksize. I just did some not-very-representative testing using the loopback address on my machine and with 4k blocks the maximum throughput I can get is 140MB/s:

    C:\test> -O=4 -I=4 1000 svr: request for 1048576000 1048576000 took 6.999 seconds. [142.89 MB/s]

    By using 100k blocks, I can get that up to over 300MB/s:

    C:\test> -O=100 -I=100 10000 svr: request for 10485760000 10485760000 took 33.032 seconds. [302.74 MB/s]

    Not a real-world test, but still 4k seems like a pifflingly small amount.

    With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
    Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
    "Science is about questioning the status quo. Questioning authority".
    In the absence of evidence, opinion is indistinguishable from prejudice.

    The start of some sanity?

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