Re: [PATCH v4 4/7] block/null_blk: Support disabling zone write locking

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On 7/26/23 17:36, Chaitanya Kulkarni wrote:
On 7/26/2023 12:34 PM, Bart Van Assche wrote:
Add a new configfs attribute for disabling zone write locking. Tests
show a performance of 250 K IOPS with no I/O scheduler, 6 K IOPS with
mq-deadline and write locking enabled and 123 K IOPS with mq-deadline
and write locking disabled. This shows that disabling write locking
results in about 20 times more IOPS for this particular test case.

Cc: Christoph Hellwig <hch@xxxxxx>
Cc: Damien Le Moal <dlemoal@xxxxxxxxxx>
Cc: Ming Lei <ming.lei@xxxxxxxxxx>
Signed-off-by: Bart Van Assche <bvanassche@xxxxxxx>
---

This patch looks good to me, perhaps a blktests would be nice in zbd
category ?

Reviewed-by: Chaitanya Kulkarni <kch@xxxxxxxxxx>

Hi Chaitanya,

I will work on adding a blktest test that runs with zone write locking disabled.

Thanks,

Bart.




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