I can be wrong. As I see ZFS cretate seperate thread for earch txg writing. Also for writing to L2ARC. As result -- up to several thousands threads created and destoyed per second. And hundreds thousands page allocations, zeroing, maping unmaping and freeing per seconds. Very high overhead. In systat -vmstat I see totfr up to 600000, prcfr up to 200000. Estimated overhead -- 30% of system time. Can anybody implement thread and page pool for txg?Received on Mon Oct 28 2013 - 08:26:47 UTC
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