[Haskell-cafe] Re: sendfile leaking descriptors on Linux?

Thomas DuBuisson wrote:

Bardur Arantsson wrote:

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... then do errno <- getErrno if errno == eAGAIN then do threadDelay 100 sendfile out_fd in_fd poff bytes else throwErrno "Network.Socket.SendFile.Linux" else return (fromIntegral sbytes) That is, I removed the threadWaitWrite in favor of just adding a "threadDelay 100" when eAGAIN is encountered.

With this code, I cannot provoke the leak.

Unfortunately this isn't really a solution -- the CPU is pegged at ~50% when I do this and it's not exactly elegant to have a hardcoded 100 ms delay in there. :)

I don't think it matters wrt the desired final solution, but this is NOT a 100 ms delay. It is a 0.1 ms delay, which is less than a GHC time slice and as such is basically a tight loop. If you use a reasonable value for the delay you will probably see the CPU being almost completely idle.

Excellent, thanks. I was probably too tired or annoyed when I wrote that code. I sorta-kinda-knew I must have been doing *something* wrong :). I'll retry with a more reasonable delay tomorrow. Cheers,