too many close calls for non-opened fds

[Rick Jones]

Chris Rapier wrote:
> 
> Rick Jones wrote:
> 
>>>Actually that was a mistake on my part. When -r option is used the close 
>>>call occurs only during startup and not for every connection. During startup 
>>>with -r option we get around 60K close calls.
>>>We are about to do a fix for this issue on HP-UX (without -r option). The 
>>>approach is to find out the open fds and close the unwanted ones. Will this 
>>>be a valid approach.
>>
>>I would think that the overhead of determining if an FD is open wouldn't 
>>be that far off from closing it.
> 
> 
> One question: I'm assuming its cheaper (or at least was at one time) to 
> just close a whole bunch of FDs rather than track what FDs are being 
> opened as they are being opened?

most likely - at least when we are talking about crossing an exec boundary.

rick jones