Beefy Boxes and Bandwidth Generously Provided by pair Networks
"be consistent"

Re: file handle limitation of 255

by cdarke (Prior)
on Jul 15, 2010 at 08:20 UTC ( #849726=note: print w/ replies, xml ) Need Help??

in reply to file handle limitation of 255

I had this problem a few years ago - though it is rare. My limit was more like 20 file descriptors, rather than 255. I was writing supporting code for an app. which was ported from a mainframe, and a redesign was not an option.

The limit is associated with the process, so what I did was to spawn 'worker' processes to do the IO for me, and some of the processing. Essentially I split the task, with a management process which co-ordiinated everything. It was a redesign for my part of the app., but it worked very well and was scalable. Eventually I extended it to allow local processing and IO on different machines (communication used INET sockets).

So, to beat a limitation of a single process, just create more!

Comment on Re: file handle limitation of 255
Replies are listed 'Best First'.
Re^2: file handle limitation of 255
by radnus (Novice) on Jul 15, 2010 at 16:28 UTC

    This problem of 255 limit is independent of ulimit. I set this on /etc/system :- set rlim_fd_max=65536 set rlim_fd_cur=65536 So that I get host# ulimit -n 65536 But still I have 255 limitation.

      A workaround on Solaris 10 (update 4?) and later is to run the application with this environment variable setting:
      For details, see

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://849726]
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others cooling their heels in the Monastery: (3)
As of 2015-11-29 01:15 GMT
Find Nodes?
    Voting Booth?

    What would be the most significant thing to happen if a rope (or wire) tied the Earth and the Moon together?

    Results (746 votes), past polls