From: Daeho Jeong <[email protected]> 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 <[email protected]> --- fs/f2fs/gc.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/f2fs/gc.h b/fs/f2fs/gc.h index 24e8b1c27acc..6c4d4567571e 100644 --- a/fs/f2fs/gc.h +++ b/fs/f2fs/gc.h @@ -25,7 +25,7 @@ #define DEF_GC_THREAD_CANDIDATE_RATIO 20 /* select 20% oldest sections as candidates */ #define DEF_GC_THREAD_MAX_CANDIDATE_COUNT 10 /* select at most 10 sections as candidates */ #define DEF_GC_THREAD_AGE_WEIGHT 60 /* age weight */ -#define DEF_GC_THREAD_VALID_THRESH_RATIO 95 /* do not GC over 95% valid block ratio for one time GC */ +#define DEF_GC_THREAD_VALID_THRESH_RATIO 80 /* do not GC over 80% valid block ratio for one time GC */ #define DEFAULT_ACCURACY_CLASS 10000 /* accuracy class */ #define LIMIT_INVALID_BLOCK 40 /* percentage over total user space */ -- 2.51.0.618.g983fd99d29-goog _______________________________________________ Linux-f2fs-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
