On 21/05/2024 15:51, J. Dekker wrote:
Some timers on certain device and test combinations can produce noisy results, affecting the reliability of performance measurements. One notable example of this is the Canaan K230 RISC-V development board.An option to adjust the number of samples by an exponent (--runs) has been added, allowing developers to increase the sample count for more reliable results. Signed-off-by: J. Dekker <j...@itanimul.li> --- tests/checkasm/checkasm.c | 16 +++++++++++++++- tests/checkasm/checkasm.h | 7 ++++--- 2 files changed, 19 insertions(+), 4 deletions(-) diff --git a/tests/checkasm/checkasm.c b/tests/checkasm/checkasm.c index 31ca9f6e2b..669f2be9c1 100644 --- a/tests/checkasm/checkasm.c +++ b/tests/checkasm/checkasm.c @@ -72,6 +72,9 @@ void (*checkasm_checked_call)(void *func, int dummy, ...) = checkasm_checked_call_novfp; #endif+/* Trade-off between speed and accuracy */+uint64_t bench_runs = 1U << 10; + /* List of tests to invoke */ static const struct { const char *name; @@ -820,7 +823,7 @@ static void bench_uninit(void) static int usage(const char *path) { fprintf(stderr, - "Usage: %s [--bench] [--test=<pattern>] [--verbose] [seed]\n", + "Usage: %s [--bench] [--runs=<ptwo>] [--test=<pattern>] [--verbose] [seed]\n", path); return 1; } @@ -867,6 +870,17 @@ int main(int argc, char *argv[]) state.test_name = arg + 7; } else if (!strcmp(arg, "--verbose") || !strcmp(arg, "-v")) { state.verbose = 1; + } else if (!strncmp(arg, "--runs=", 7)) { + l = strtoul(arg + 7, &end, 10); + if (*end == '\0') { + if (l > 30) { + fprintf(stderr, "checkasm: error: runs exponent must be within the range 0 <= 30\n"); + usage(argv[0]); + } + bench_runs = 1U << l; + } else { + return usage(argv[0]); + } } else if ((l = strtoul(arg, &end, 10)) <= UINT_MAX && *end == '\0') { seed = l; diff --git a/tests/checkasm/checkasm.h b/tests/checkasm/checkasm.h index 07fcc751ff..e05053cbf6 100644 --- a/tests/checkasm/checkasm.h +++ b/tests/checkasm/checkasm.h @@ -167,7 +167,7 @@ extern AVLFG checkasm_lfg;static av_unused void *func_ref, *func_new; -#define BENCH_RUNS 1000 /* Trade-off between accuracy and speed */+extern uint64_t bench_runs;/* Decide whether or not the specified function needs to be tested */#define check_func(func, ...) (checkasm_save_context(), func_ref = checkasm_check_func((func_new = func), __VA_ARGS__)) @@ -336,10 +336,11 @@ typedef struct CheckasmPerf { av_unused const int sysfd = perf->sysfd;\ func_type *tfunc = func_new;\ uint64_t tsum = 0;\ - int ti, tcount = 0;\ + uint64_t ti, tcount = 0;\ uint64_t t = 0; \ + const uint64_t truns = bench_runs;\ checkasm_set_signal_handler_state(1);\ - for (ti = 0; ti < BENCH_RUNS; ti++) {\ + for (ti = 0; ti < truns; ti++) {\ PERF_START(t);\ tfunc(__VA_ARGS__);\ tfunc(__VA_ARGS__);\
Tested, works as intended LGTM, thanks
OpenPGP_0xA2FEA5F03F034464.asc
Description: OpenPGP public key
OpenPGP_signature.asc
Description: OpenPGP digital signature
_______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
