On 5/11/23 14:15, Pankaj Raghav wrote:
XArray was introduced to hold large array of pointers with a simple API.
XArray API also provides array semantics which simplifies the way we store
and access the backing pages, and the code becomes significantly easier
to understand.
No performance difference was noticed between the two implementation
using fio with direct=1 [1].
[1] Performance in KIOPS:
| radix-tree | XArray | Diff
| | |
write | 315 | 313 | -0.6%
randwrite | 286 | 290 | +1.3%
read | 330 | 335 | +1.5%
randread | 309 | 312 | +0.9%
Signed-off-by: Pankaj Raghav <p.raghav@xxxxxxxxxxx>
---
@willy: I noticed later that you sent a similar patch in 2019[1]. Let me
know if you need your signoff in the patch as well.
[1] https://lore.kernel.org/linux-block/20190318194821.3470-9-willy@xxxxxxxxxxxxx/
drivers/block/brd.c | 93 ++++++++++++---------------------------------
1 file changed, 24 insertions(+), 69 deletions(-)
Reviewed-by: Hannes Reinecke <hare@xxxxxxx>
Cheers,
Hannes
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