Re: [Nolug] LAN speed confusion

From: Petri Laihonen <pietu_at_weblizards.net>
Date: Fri, 13 Jul 2012 22:39:46 -0500
Message-ID: <CABa+Gmhec2182P4YA2bp=UUWQhxtttaSFkHH7o2OSdSaV22REQ@mail.gmail.com>

Ron,

Yes. FTP is probably one of the worst protocols AFAIK.
There is so much back and forth chatter that it consumes a lot of
bandwidth.

This is most prominent when transferring few hundreds (or thousands)
smaller files vs. same files inside one tar file. I'm sure most protocols
have similar problems.

P

On Fri, Jul 13, 2012 at 6:17 PM, Ron Johnson <ron.l.johnson@cox.net> wrote:

> Is ftp really a wasteful protocol?
>
> (Though I do remember that file xfer speeds took a tumble when moving from
> BBS/Zmodem to TCPIP/ftp.)
>
>
> On 07/13/2012 06:06 PM, Petri Laihonen wrote:
>
>> My theory is wasteful protocols. (If such terminology even exists)
>>
>> I have similar observation. Mine maxed out at 12MB as well, though the
>> speed dropped to 7MB after I converted from single drive on the media
>> server to Raid6. (Local read/write speeds are now higher, yet transfers
>> over the network are slower)
>>
>> I don't trust interwebs speed tests.
>>
>> P
>>
>>
>> On Fri, Jul 13, 2012 at 5:26 PM, Ron Johnson <ron.l.johnson@cox.net>
>> wrote:
>>
>> I've got a bunch of devices at home connected to a Fast Ethernet switch.
>>> Among them are a Netgear switch (aku), my Linux desktop (haggis) and my
>>> wife's Linux desktop (peanutbutter). So, I should get a theoretical max
>>> of
>>> 12MBps in half-duplex mode and 25MBps in full-duplex mode.
>>>
>>> That's presumably why internet speed tests on both haggis and
>>> peanutbutter
>>> show peaks up to 24MBps (close enough to my paid-for max of 25MBps).
>>>
>>> Why, then, do xfers (NFS, scp & plain old ftp) between haggis and
>>> peanutbutter max out just under 12MBps?
>>>
>>> Ron
>>>
>>
> --
> "There is usually only a limited amount of damage that can be
> done by dull or stupid people. For creating a truly monumental
> disaster, you need people with high IQs."
> Thomas Sowell
>
>
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Received on 07/13/12

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