Re: [f2fs-dev] [PATCH] f2fs: set default valid_thresh_ratio to 80 for zoned devices

From: Chao Yu

Date: Wed Oct 08 2025 - 23:21:58 EST


On 10/4/2025 6:49 AM, Daeho Jeong wrote:
From: Daeho Jeong <daehojeong@xxxxxxxxxx>

Zoned storage devices provide marginal over-capacity space, typically
around 10%, for filesystem level storage control.

By utilizing this extra capacity, we can safely reduce the default
'valid_thresh_ratio' to 80. This action helps to significantly prevent
excessive garbage collection (GC) and the resulting power consumption,
as the filesystem becomes less aggressive about cleaning segments
that still hold a high percentage of valid data.

Signed-off-by: Daeho Jeong <daehojeong@xxxxxxxxxx>

Reviewed-by: Chao Yu <chao@xxxxxxxxxx>

Thanks,