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@@ -34,7 +34,7 @@ static int __test__sw_clock_freq(enum perf_sw_ids clock_id)
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.freq = 1,
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};
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- attr.sample_freq = 10000;
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+ attr.sample_freq = 500;
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evlist = perf_evlist__new();
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if (evlist == NULL) {
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@@ -58,8 +58,11 @@ static int __test__sw_clock_freq(enum perf_sw_ids clock_id)
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}
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if (perf_evlist__open(evlist)) {
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+ const char *knob = "/proc/sys/kernel/perf_event_max_sample_rate";
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+
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err = -errno;
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- pr_debug("Couldn't open evlist: %s\n", strerror(errno));
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+ pr_debug("Couldn't open evlist: %s\nHint: check %s, using %" PRIu64 " in this test.\n",
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+ strerror(errno), knob, (u64)attr.sample_freq);
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goto out_delete_maps;
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}
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