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| author | Jaroslav Kysela <perex@perex.cz> | 2022-11-24 08:33:47 +0100 |
|---|---|---|
| committer | Jaroslav Kysela <perex@perex.cz> | 2022-11-24 08:33:47 +0100 |
| commit | ea0850f3f3780652869c2b4550576894bc21684f (patch) | |
| tree | d6a7af5badc8816db6666a95e97b71db7ace414b | |
| parent | 536c93928bc57d941a7cd146dbcbd62df0be2d83 (diff) | |
| download | alsa-lib-ea0850f3f3780652869c2b4550576894bc21684f.tar.gz | |
test: latency - add --policy option to allow using SCHED_FIFO
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
| -rw-r--r-- | test/latency.c | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/test/latency.c b/test/latency.c index 1b4848d6..3b20e1c1 100644 --- a/test/latency.c +++ b/test/latency.c @@ -40,6 +40,7 @@ typedef struct timespec timestamp_t; +char *sched_policy = "rr"; char *pdevice = "hw:0,0"; char *cdevice = "hw:0,0"; snd_pcm_format_t format = SND_PCM_FORMAT_S16_LE; @@ -354,18 +355,24 @@ void gettimestamp(snd_pcm_t *handle, snd_timestamp_t *timestamp) void setscheduler(void) { struct sched_param sched_param; + int policy = SCHED_RR; + const char *spolicy = "Round Robin"; + if (strcasecmp(sched_policy, "fifo") == 0) { + policy = SCHED_FIFO; + spolicy = "FIFO"; + } if (sched_getparam(0, &sched_param) < 0) { printf("Scheduler getparam failed...\n"); return; } - sched_param.sched_priority = sched_get_priority_max(SCHED_RR); - if (!sched_setscheduler(0, SCHED_RR, &sched_param)) { - printf("Scheduler set to Round Robin with priority %i...\n", sched_param.sched_priority); + sched_param.sched_priority = sched_get_priority_max(policy); + if (!sched_setscheduler(0, policy, &sched_param)) { + printf("Scheduler set to %s with priority %i...\n", spolicy, sched_param.sched_priority); fflush(stdout); return; } - printf("!!!Scheduler set to Round Robin with priority %i FAILED!!!\n", sched_param.sched_priority); + printf("!!!Scheduler set to %s with priority %i FAILED!!!\n", spolicy, sched_param.sched_priority); } long timediff(snd_timestamp_t t1, snd_timestamp_t t2) @@ -515,6 +522,7 @@ void help(void) "-e,--effect apply an effect (bandpass filter sweep)\n" "-x,--posdump dump buffer positions\n" "-X,--realtime do a realtime check (buffering)\n" +"-O,--policy set scheduler policy (RR or FIFO)\n" ); printf("Recognized sample formats are:"); for (k = 0; k < SND_PCM_FORMAT_LAST; ++k) { @@ -555,6 +563,7 @@ int main(int argc, char *argv[]) {"effect", 0, NULL, 'e'}, {"posdump", 0, NULL, 'x'}, {"realtime", 0, NULL, 'X'}, + {"policy", 1, NULL, 'O'}, {NULL, 0, NULL, 0}, }; snd_pcm_t *phandle, *chandle; @@ -569,7 +578,7 @@ int main(int argc, char *argv[]) morehelp = 0; while (1) { int c; - if ((c = getopt_long(argc, argv, "hP:C:m:M:U:F:f:c:r:B:E:s:y:bpenxX", long_option, NULL)) < 0) + if ((c = getopt_long(argc, argv, "hP:C:m:M:U:F:f:c:r:B:E:s:y:O:bpenxX", long_option, NULL)) < 0) break; switch (c) { case 'h': @@ -643,6 +652,9 @@ int main(int argc, char *argv[]) case 'X': realtime_check = 1; break; + case 'O': + sched_policy = optarg; + break; } } |