// littlefs bench runner defines // preconfigured defines that control how benches run #ifdef BENCH_DEFINE // name value (overridable) BENCH_DEFINE(READ_SIZE, 1 ) BENCH_DEFINE(PROG_SIZE, 1 ) BENCH_DEFINE(BLOCK_SIZE, 4096 ) BENCH_DEFINE(BLOCK_COUNT, DISK_SIZE/BLOCK_SIZE ) BENCH_DEFINE(DISK_SIZE, 1024*1024 ) BENCH_DEFINE(BLOCK_RECYCLES, -1 ) BENCH_DEFINE(RCACHE_SIZE, LFS3_MAX(16, READ_SIZE) ) BENCH_DEFINE(PCACHE_SIZE, LFS3_MAX(16, PROG_SIZE) ) BENCH_DEFINE(FCACHE_SIZE, 16 ) BENCH_DEFINE(LOOKAHEAD_SIZE, 16 ) BENCH_DEFINE(GC_FLAGS, LFS3_GC_GC ) BENCH_DEFINE(GC_STEPS, 0 ) BENCH_DEFINE(GC_LOOKAHEAD_THRESH, -1 ) BENCH_DEFINE(GC_LOOKGBMAP_THRESH, -1 ) BENCH_DEFINE(GC_PREERASE_COUNT, -1 ) BENCH_DEFINE(GC_COMPACT_THRESH, 0 ) BENCH_DEFINE(SHRUB_SIZE, BLOCK_SIZE/4 ) BENCH_DEFINE(FRAGMENT_SIZE, LFS3_MIN(BLOCK_SIZE/8, 512) ) BENCH_DEFINE(CRYSTAL_THRESH, BLOCK_SIZE/8 ) BENCH_DEFINE(LOOKGBMAP_THRESH, BLOCK_COUNT/4 ) BENCH_DEFINE(ERASE_VALUE, 0xff ) #ifndef BENCH_NAND // default timings for NOR flash, based on w25q64jv: // https://www.winbond.com/resource-files/ // W25Q256JV%20SPI%20RevQ%2002072025%20Plus.pdf // // note one thing unique to NOR flash is the extreme erase cost // // FR=104 MHz, quad prog (9.6 ns * 8/4) // => +~19 ns for bus (not read!) // // simple: // readed=40ns/B fR=50 MHz, quad read (20 ns * 8/4) // progged=1582ns/B tPP=0.4 ms, page=256 (0.4 ms / 256 + bus) // erased=10986ns/B tSE=45 ms, sector=4096 (45 ms / 4096) // // less-simple: // reads=0ns (no transaction cost) // progs=400000ns tPP=0.4 ms, page=256 // erases=0ns (no transaction cost) // readed=40ns/B fR=50 MHz, quad read (20 ns * 8/4) // progged=1484ns/B tPP=0.4 ms (((4096/256)*0.4ms - 0.4ms)/4096 + bus) // erased=10986ns/B tSE=45 ms, sector=4096 (45 ms / 4096) // // note we always treat erases as per-byte to simplify benchmarking // across different block sizes // #ifdef BENCH_SIMPLE BENCH_DEFINE(READS_TIMING, 0 ) BENCH_DEFINE(PROGS_TIMING, 0 ) BENCH_DEFINE(ERASES_TIMING, 0 ) BENCH_DEFINE(READED_TIMING, 40 ) BENCH_DEFINE(PROGGED_TIMING, 1582 ) BENCH_DEFINE(ERASED_TIMING, 10986 ) #else BENCH_DEFINE(READS_TIMING, 0 ) BENCH_DEFINE(PROGS_TIMING, 400000 ) BENCH_DEFINE(ERASES_TIMING, 0 ) BENCH_DEFINE(READED_TIMING, 40 ) BENCH_DEFINE(PROGGED_TIMING, 1484 ) BENCH_DEFINE(ERASED_TIMING, 10986 ) #endif #else // default timings for NAND flash, based on w25n01gv: // https://www.winbond.com/resource-files/W25N01GV%20Rev%20R%20070323.pdf // // FR=104 MHz, quad read/prog (9.6 ns * 8/4) // => +~19 ns for bus // // simple: // readed=31ns/B tRD1=25 us, p=2048, s=512 (25 us / 2048 + bus) // progged=141ns/B tPP=250 us, p=2048, s=512 (250 us / 2048 + bus) // erased=15ns/B tBE=2 ms, block=131072 (2 ms / 131072) // // less-simple: // reads=25000ns tRD1=25 us, p=2048, s=512 // progs=250000ns tPP=250 us, p=2048, s=512 // erases=0ns (no transaction cost) // readed=31ns/B tRD1=25 us (((131072/2048)*25us - 25us)/131072 + bus) // progged=139ns/B tPP=250 us (((131072/2048)*250us - 250us)/131072 + bus) // erased=15ns/B tBE=2 ms, block=131072 (2 ms / 131072) // // note we always treat erases as per-byte to simplify benchmarking // across different block sizes // #ifdef BENCH_SIMPLE BENCH_DEFINE(READS_TIMING, 0 ) BENCH_DEFINE(PROGS_TIMING, 0 ) BENCH_DEFINE(ERASES_TIMING, 0 ) BENCH_DEFINE(READED_TIMING, 31 ) BENCH_DEFINE(PROGGED_TIMING, 141 ) BENCH_DEFINE(ERASED_TIMING, 15 ) #else BENCH_DEFINE(READS_TIMING, 25000 ) BENCH_DEFINE(PROGS_TIMING, 250000 ) BENCH_DEFINE(ERASES_TIMING, 0 ) BENCH_DEFINE(READED_TIMING, 31 ) BENCH_DEFINE(PROGGED_TIMING, 139 ) BENCH_DEFINE(ERASED_TIMING, 15 ) #endif #endif #ifndef BENCH_KIWIBD BENCH_DEFINE(ERASE_CYCLES, 0 ) BENCH_DEFINE(BADBLOCK_BEHAVIOR, LFS3_EMUBD_BADBLOCK_PROGERROR ) BENCH_DEFINE(POWERLOSS_BEHAVIOR, LFS3_EMUBD_POWERLOSS_ATOMIC ) BENCH_DEFINE(BD_SEED, 0 ) #endif #endif // struct lfs3_cfg definition #ifdef BENCH_CFG struct lfs3_cfg _cfg = { #ifdef BENCH_CFG_CFG BENCH_CFG_CFG #endif .read_size = READ_SIZE, .prog_size = PROG_SIZE, .block_size = BLOCK_SIZE, .block_count = BLOCK_COUNT, .block_recycles = BLOCK_RECYCLES, .rcache_size = RCACHE_SIZE, .pcache_size = PCACHE_SIZE, .fcache_size = FCACHE_SIZE, .lookahead_size = LOOKAHEAD_SIZE, #ifdef LFS3_GBMAP .gc_lookgbmap_thresh = GC_LOOKGBMAP_THRESH, .lookgbmap_thresh = LOOKGBMAP_THRESH, #endif #ifdef LFS3_PREERASE .gc_preerase_count = GC_PREERASE_COUNT, #endif #ifdef LFS3_GC .gc_flags = GC_FLAGS, .gc_steps = GC_STEPS, #endif .gc_lookahead_thresh = GC_LOOKAHEAD_THRESH, .gc_compact_thresh = GC_COMPACT_THRESH, .shrub_size = SHRUB_SIZE, .fragment_size = FRAGMENT_SIZE, .crystal_thresh = CRYSTAL_THRESH, }; struct lfs3_cfg *BENCH_CFG = &_cfg; #endif // struct lfs3_*bd_cfg definition #ifdef BENCH_BDCFG #ifndef BENCH_KIWIBD struct lfs3_emubd_cfg _bdcfg = { #ifdef BENCH_BDCFG_CFG BENCH_BDCFG_CFG #endif .erase_value = ERASE_VALUE, .reads_timing = READS_TIMING, .progs_timing = PROGS_TIMING, .erases_timing = ERASES_TIMING, .readed_timing = READED_TIMING, .progged_timing = PROGGED_TIMING, .erased_timing = ERASED_TIMING, .erase_cycles = ERASE_CYCLES, .badblock_behavior = BADBLOCK_BEHAVIOR, .powerloss_behavior = POWERLOSS_BEHAVIOR, .seed = BD_SEED, }; struct lfs3_emubd_cfg *BENCH_BDCFG = &_bdcfg; #else struct lfs3_kiwibd_cfg _bdcfg = { #ifdef BENCH_BDCFG_CFG BENCH_BDCFG_CFG #endif .erase_value = ERASE_VALUE, .reads_timing = READS_TIMING, .progs_timing = PROGS_TIMING, .erases_timing = ERASES_TIMING, .readed_timing = READED_TIMING, .progged_timing = PROGGED_TIMING, .erased_timing = ERASED_TIMING, }; struct lfs3_kiwibd_cfg *BENCH_BDCFG = &_bdcfg; #endif #endif