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I am seeing E_BADF returned from aio_read/aio_write operations against FD 192 when the application is accessing a large number of files through a common IOCP.

Is there a limit to the number of files descriptors that can be associated with a simple IO Completion port under AIX 7.1? Can the limit be raised? Is there a reason to limit the number of file descriptors per IOCP?

ulimit reports an unlimited number of file descriptors, so that's not it. I'm hoping there is another tunable.

Thanks.

Mgetz
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Jack Stephens
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  • AIO isn't IOCP, IOCP is exclusive to NT Kernel AFAIK – Mgetz Feb 23 '18 at 18:53
  • Also please show us the code that isn't working, more than likely you're already working on a closed file descriptor for some reason. – Mgetz Feb 23 '18 at 18:58

1 Answers1

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The errors turned out to arise from un-related coding issues from a parallel set of potential changes (read: I'm an idiot).

For what it's worth, though, AIX does support an implementation of IOCP when you enable legacy AIO support.

Jack Stephens
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