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Increase maximum supported number of ranges per TRIM command from 256 to 512

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to use full potential of Intel X25-M SSDs. On synthetic test with 32K ranges
it gives about 20% speedup, which probably costs more then 2K of RAM.
This commit is contained in:
Alexander Motin 2011-06-03 07:25:36 +00:00
parent 38c64884ff
commit 1524677adf
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=222643
1 changed files with 2 additions and 2 deletions
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4
sys/cam/ata/ata_da.c
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@ -114,9 +114,9 @@ struct disk_params {
u_int64_t sectors; /* Total number sectors */
};
#define TRIM_MAX_BLOCKS 4
#define TRIM_MAX_BLOCKS 8
#define TRIM_MAX_RANGES (TRIM_MAX_BLOCKS * 64)
#define TRIM_MAX_BIOS (TRIM_MAX_RANGES * 8)
#define TRIM_MAX_BIOS (TRIM_MAX_RANGES * 4)
struct trim_request {
uint8_t data[TRIM_MAX_RANGES * 8];
struct bio *bps[TRIM_MAX_BIOS];