Rik van Riel wrote:
On Sun, 27 Feb 2005, Christian Schmid wrote:
Christian, how big are the data blocks you sys_readahead, and how many do you have outstanding at a time ?
I am reading 800000 bytes of data as soon as there is less than 200000 data in the cache. I do assume the cache doesnt kill itself. I have 8 GB machine with 7,5 GB free for caching.
OK, so you read 800kB with 4000 threads, or 3.2GB of readahead data. The inactive list is quite possibly smaller than that, at 1/3 of memory or around 2.6 GB.
It looks like the cache might be killing itself, through readahead thrashing.
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