Yes, I have enough memory (typ. ~400MB "MemAvailable" used for caches, with ~6MB really free, and no swap required or ever used), so I will look into "hugepages", thanks.
But I'm wondering whether my understanding of the problem was maybe wrong all the time. When the "page allocation failure" is reported (see the log in post #1 and the one below), what does this mean?:
(a) No contiguous 128k block is available in the "really free" 6MB, but such block will then be freed up within the 400MB "MemAvailable" automatically by dropping caches, thus the block can be allocated in the end, but the time required for this is resulting in a dropout and the artefacts in the video stream.
(b) No contiguous 128k block is available at all, neither in the "really free" 6BM nor in the 400MB "MemAvailable", but can be made available by "memory compaction" (again, time required resulting in the artefacts in the video stream).
(c) No contiguous 128k block is available at all and cannot be made available, not even by "memory compaction", as the whole ~400MB memory is really badly fragmented with blocked small blocks all over, so that the failure of allocating a 128k block is a permanent one, and the missing block is causing the dropout in the video stream.
Is anyone able to answer this reliably, or is any additional information from side is required?
Last edited by Fischreiher; 09-17-2014 at 06:33 AM..
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