* locality of extent status tree traversal
@ 2019-05-06 17:51 Probir Roy
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From: Probir Roy @ 2019-05-06 17:51 UTC (permalink / raw)
To: kernelnewbies
Hi,
I am running Phoronix-fio benchmark on Linux kernel 4.18.0-rc5. I
observe the same nodes have been traversed on the extent status tree
in "ext4_es_lookup_extent" function when ext4 write begins. What's the
locality signature of ext4_es_lookup_extent? Is it possible that same
logical block being looked up repeatedly (Temporal)? Is it possible
that co-located logical blocks are searched by ext4_es_lookup_extent
(spatial)?
--
Probir Roy
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