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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2021/04/01 17:59:04 UTC

[GitHub] [arrow] westonpace commented on pull request #9656: ARROW-11772: [C++] Provide reentrant IPC file reader

westonpace commented on pull request #9656:
URL: https://github.com/apache/arrow/pull/9656#issuecomment-812074834


   +1 for Antoine's approach.  Everything to the "left" of the background generator should be simple reads.  Immediately after the background generator it should transfer to the CPU thread.  My theory (I will hopefully prove someday :) ) is that anytime you start processing data (e.g. ReadMessage) on I/O threads you are 1) not reading as fast as you can from the input stream and 2) forcing it to load data into the CPU caches twice.


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