Re: [PATCH] btrfs: reduce contention on log trees when logging checksums

David Sterba
2020-07-20T14:16:16Z

On Wed, Jul 15, 2020 at 12:30:43PM +0100, fdmanana@kernel.org wrote:
> From: Filipe Manana <fdmanana@suse.com>
> **** 16 jobs, file size 1G, fsync frequency 1 ****
> (+40.1% throughput, -28.5% runtime)

> **** 32 jobs, file size 1G, fsync frequency 1 ****
> (+29.4% throughput, -22.7% runtime)

> **** 64 jobs, file size 512M, fsync frequency 1 ****
> (+29.3% throughput, -22.7% runtime)

> **** 128 jobs, file size 256M, fsync frequency 1 ****
> (+121.2% throughput, -54.6% runtime)

> **** 256 jobs, file size 256M, fsync frequency 1 ****
> (+74.9% throughput, -42.8% runtime)

> **** 512 jobs, file size 128M, fsync frequency 1 ****
> (+65.1% throughput, -39.3% runtime)

> **** 1024 jobs, file size 128M, fsync frequency 1 ****
> (+48.7% throughput, -33.1% runtime)
>
> Signed-off-by: Filipe Manana <fdmanana@suse.com>

Some nice numbers to mention in the merge log, thanks.