Christopher Haster
440d303a6b
Based on some experience out-of-tree: - bench_rbyd - Simple rbyd attr/id litmus benchmark - bench_btree (new) - Simple btree id/name litmus benchmark - bench_file (new) - Simple file read/write litmus benchmark - bench_dir (new) - Simple dir read/write/stat litmus benchmark - bench_wt - Heavy-duty write-throughput benchmark - bench_rt (new) - Heavy-duty read-throughput benchmark Benches take a long time to run for useful results, so we probably don't want to go crazy with them like with the tests. Honestly, we may want to chop this down to just the write/read-throughput benches.
94 lines
2.8 KiB
TOML
94 lines
2.8 KiB
TOML
# Simple (root) directory benchmark
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after = ['bench_rbyd', 'bench_btree', 'bench_file']
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# helper for measuring disk usage
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code = '''
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#include "benches/bench_helpers.h"
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'''
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[cases.bench_dir]
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# 0 = in-order
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# 1 = reversed-order
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# 2 = random-order
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defines.ORDER = 2
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defines.N = 1024
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defines.SIZE = 64
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defines.STEP = 1
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defines.SEED = 42
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# set of probes to measure
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# 0x1 => write
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# 0x2 => stat
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# 0x4 => read
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# 0x8 => usage
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defines.MASK = 0xf
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code = '''
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lfs3_t lfs3;
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lfs3_format(&lfs3, LFS3_F_RDWR, CFG) => 0;
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lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
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uint32_t prng = SEED;
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for (lfs3_off_t i = 0; i < N; i++) {
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lfs3_off_t i_
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= (ORDER == 0) ? i
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: (ORDER == 1) ? N-1-i
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: BENCH_PRNG(&prng) % N;
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// measure file creation
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if ((MASK & 0x1) && (i+1) % STEP == 0) {
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BENCH_START("write");
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}
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char name[256];
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sprintf(name, "bench_%08x", i_);
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lfs3_file_t file;
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lfs3_file_open(&lfs3, &file, name,
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LFS3_O_WRONLY | LFS3_O_CREAT | LFS3_O_TRUNC) => 0;
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uint8_t wbuf[SIZE];
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for (lfs3_size_t j = 0; j < SIZE; j++) {
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wbuf[j] = 'a' + (BENCH_PRNG(&prng) % 26);
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}
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lfs3_file_write(&lfs3, &file, wbuf, SIZE) => SIZE;
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lfs3_file_close(&lfs3, &file) => 0;
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if ((MASK & 0x1) && (i+1) % STEP == 0) {
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BENCH_STOP("write", i*SIZE+SIZE);
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}
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// choose a random file to stat
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if ((MASK & 0x2) && (i+1) % STEP == 0) {
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BENCH_START("stat");
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lfs3_off_t i__ = BENCH_PRNG(&prng) % N;
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sprintf(name, "bench_%08x", i__);
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struct lfs3_info info;
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int err = lfs3_stat(&lfs3, name, &info);
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assert(!err || err == LFS3_ERR_NOENT);
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if (err != LFS3_ERR_NOENT) {
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assert(info.type == LFS3_TYPE_REG);
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assert(info.size == SIZE);
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}
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BENCH_STOP("stat", i*SIZE+SIZE);
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}
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// choose a random file to read
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if ((MASK & 0x4) && (i+1) % STEP == 0) {
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BENCH_START("read");
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lfs3_off_t i__ = BENCH_PRNG(&prng) % N;
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sprintf(name, "bench_%08x", i__);
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int err = lfs3_file_open(&lfs3, &file, name, LFS3_O_RDONLY);
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assert(!err || err == LFS3_ERR_NOENT);
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if (err != LFS3_ERR_NOENT) {
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uint8_t rbuf[SIZE];
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lfs3_file_read(&lfs3, &file, rbuf, SIZE) => SIZE;
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lfs3_file_close(&lfs3, &file) => 0;
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}
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BENCH_STOP("read", i*SIZE+SIZE);
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}
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// measure disk usage
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if ((MASK & 0x8) && (i+1) % STEP == 0) {
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uintmax_t usage = bench_helpers_usage(&lfs3);
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BENCH_RESULT("usage", i*SIZE+SIZE, usage);
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}
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}
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lfs3_unmount(&lfs3) => 0;
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'''
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