[Haskell-cafe] Can a GC delay TCP connection formation?

timothyhobbs at seznam.cz timothyhobbs at seznam.cz
Tue Nov 27 16:55:09 CET 2012

Could you give us more info on what your constraints are?  Is it necessary 
that you have a certain number of connections per second, or is it necessary
that the connection results very quickly after some other message is 

---------- Původní zpráva ----------
Od: Johan Tibell <johan.tibell at gmail.com>
Datum: 27. 11. 2012
Předmět: Re: [Haskell-cafe] Can a GC delay TCP connection formation?
Kazu and Andreas, could this be IO manager related?

On Monday, November 26, 2012, Jeff Shaw wrote:
" Hello,
I've run into an issue that makes me think that when the GHC GC runs while a
Snap or Warp HTTP server is serving connections, the GC prevents or delays 
TCP connections from forming. My application requires that TCP connections 
form within a few tens of milliseconds. I'm wondering if anyone else has run
into this issue, and if there are some GC flags that could help. I've tried 
a few, such as -H and -c, and haven't found anything to help. I'm using GHC 


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