[PATCH 3/3] memblockq: Add history for debugging purposes.

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On Sat, 2012-04-28 at 18:54 +0300, Tanu Kaskinen wrote:
> +/* On my machine with the current implementation (2012-04-28) the size of one
> + * history item is 1744 bytes, so in total the history memory consumption is
> + * 50 * 1744 = 87.2 kB per memblockq. One chunk_info struct is 16 bytes, so
> + * with 100 chunks the chunk list takes 1.6 kB per history item. */
> +#define HISTORY_N_ITEMS 50
> +#define HISTORY_MAX_N_BLOCKS 100

The upper limit of 100 blocks appears to be a bit low. Firefox likes to
push 256 bytes at a time with HTML5 videos, and that caused crashing due
to the block limit getting exceeded. Setting the limit to 1000 seems to
work better - I was able to watch
http://www.youtube.com/watch?v=o5-phFVfZnQ with audio :)

To be clear, this limit only matters when the history logging is
enabled, so in normal use there's no need to worry about this.

-- 
Tanu



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