[cvsnt] Excessive delays with files > ~800KB

John Hardin jhardin at epicor.com
Thu Jun 22 22:29:43 BST 2006

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Glen Starrett sez:

> Tony Hoyle wrote:
>> It could very easily be an AV on the client or a network issue.
>> There's nothing special about sending a file to the server once it's
>> decided to do it.. it gets sent as a single block.
> That doesn't explain why the cygwin client doesn't see that delay
> though.  Maybe something to do with an interaction of the way cvsnt
> reads in the file to transmit vs. cygwin cvs that causes more
> interference with the AV on the client?  Maybe some memory
> optimizations having a bad effect on network performance (e.g. buffer
> too small for GBit net)?     
> John -- Have you tried completely uninstalling the AV client just to
>   see if that improves? 

No, I haven't.

> Also, you mention this is done with ssh --
> are you using the builtin SSH client with cvsnt or another external
> ssh client? Which do you use for the cygwin cvs?  

I'm using the external Cygwin SSH for both.

New data point: on my problematic desktop I checked out using cygwin CVS and
tried an update and saw much the same delay behavior.

I then tried to scp the file to the cvs server and saw the same thing.

I am now performing network troubleshooting tests with our IT admin.

Bizarre. The computer on the desk right next to it, running through the same
mini-switch, has *no* problems...

John Hardin KA7OHZ
Senior Applications Developer, RetailCRM Development
  web: http://www.epicor.com
voice: (425) 672-1304
  fax: (425) 672-0192
email: <jhardin at epicor.com>
EPICOR|CRS Retail Solutions Division
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Lynnwood, WA 98037
  The first time I saw a bagpipe, I thought the player was torturing
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