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Message-ID: <cf12a0c4-21bd-4568-9dc8-daaa2392bd94@amd.com> Date: Fri, 6 Dec 2024 10:54:59 +0530 From: Ravi Bangoria <ravi.bangoria@....com> To: peterz@...radead.org, mingo@...hat.com, namhyung@...nel.org Cc: acme@...nel.org, eranian@...gle.com, mark.rutland@....com, alexander.shishkin@...ux.intel.com, jolsa@...nel.org, irogers@...gle.com, adrian.hunter@...el.com, kan.liang@...ux.intel.com, tglx@...utronix.de, bp@...en8.de, dave.hansen@...ux.intel.com, x86@...nel.org, hpa@...or.com, linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org, santosh.shukla@....com, ananth.narayan@....com, sandipan.das@....com, Ravi Bangoria <ravi.bangoria@....com> Subject: Re: [PATCH v2 10/10] perf test amd ibs: Add sample period unit test On 06-Dec-24 10:47 AM, Ravi Bangoria wrote: > IBS Fetch and IBS Op pmus has various constraints on supported sample > periods. Add perf unit tests to test those. > > Running it in parallel with other tests causes intermittent failures. > Mark it exclusive to force it to run sequentially. The verbose mode of unit test is quite exhaustive so I've not added it in the commit description. Here is the sample output on a Zen5 machine: Without patches: $ sudo ./perf test -vv 112 75: AMD IBS sample period: --- start --- test child forked, pid 7368 Using CPUID AuthenticAMD-26-2-1 IBS config tests: ----------------- Fetch PMU tests: 0xffff : Ok (nr samples: 1224) 0x1000 : Ok (nr samples: 19866) 0xff : Ok (nr samples: 40738) 0x1 : Ok (nr samples: 40945) 0x0 : Ok 0x10000 : Ok Op PMU tests: 0x0 : Ok 0x1 : Fail 0x8 : Fail 0x9 : Ok (nr samples: 40543) 0xf : Ok (nr samples: 40543) 0x1000 : Ok (nr samples: 20267) 0xffff : Ok (nr samples: 1289) 0x10000 : Ok 0x100000 : Fail (nr samples: 17) 0xf00000 : Fail (nr samples: 1) 0xf0ffff : Fail (nr samples: 1) 0x1f0ffff : Fail (nr samples: 1) 0x7f0ffff : Fail (nr samples: 0) 0x8f0ffff : Ok 0x17f0ffff : Ok IBS sample period constraint tests: ----------------------------------- Fetch PMU test: freq 0, sample_freq 0: Ok freq 0, sample_freq 1: Fail freq 0, sample_freq 15: Fail freq 0, sample_freq 16: Ok (nr samples: 1604) freq 0, sample_freq 17: Ok (nr samples: 1604) freq 0, sample_freq 143: Ok (nr samples: 1232) freq 0, sample_freq 144: Ok (nr samples: 1274) freq 0, sample_freq 145: Ok (nr samples: 1241) freq 0, sample_freq 1234: Ok (nr samples: 1261) freq 0, sample_freq 65520: Ok (nr samples: 2660) freq 0, sample_freq 65535: Ok (nr samples: 2635) freq 0, sample_freq 65552: Ok (nr samples: 2633) freq 0, sample_freq 8388607: Ok (nr samples: 31) freq 1, sample_freq 0: Ok freq 1, sample_freq 1: Ok (nr samples: 4) freq 1, sample_freq 15: Ok (nr samples: 4) freq 1, sample_freq 16: Ok (nr samples: 4) freq 1, sample_freq 17: Ok (nr samples: 4) freq 1, sample_freq 143: Ok (nr samples: 5) freq 1, sample_freq 144: Ok (nr samples: 5) freq 1, sample_freq 145: Ok (nr samples: 5) freq 1, sample_freq 1234: Ok (nr samples: 8) freq 1, sample_freq 65520: Ok (nr samples: 541) freq 1, sample_freq 65535: Ok (nr samples: 622) freq 1, sample_freq 65552: Ok (nr samples: 720) freq 1, sample_freq 8388607: Ok Op PMU test: freq 0, sample_freq 0: Ok freq 0, sample_freq 1: Fail freq 0, sample_freq 15: Fail freq 0, sample_freq 16: Fail freq 0, sample_freq 17: Fail freq 0, sample_freq 143: Fail freq 0, sample_freq 144: Ok (nr samples: 2005) freq 0, sample_freq 145: Ok (nr samples: 1604) freq 0, sample_freq 1234: Ok (nr samples: 1604) freq 0, sample_freq 65520: Ok (nr samples: 2547) freq 0, sample_freq 65535: Ok (nr samples: 2532) freq 0, sample_freq 65552: Ok (nr samples: 2469) freq 0, sample_freq 8388607: Ok (nr samples: 30) freq 1, sample_freq 0: Ok freq 1, sample_freq 1: Fail (nr samples: 4) freq 1, sample_freq 15: Fail (nr samples: 4) freq 1, sample_freq 16: Fail (nr samples: 4) freq 1, sample_freq 17: Fail (nr samples: 4) freq 1, sample_freq 143: Fail (nr samples: 5) freq 1, sample_freq 144: Fail (nr samples: 5) freq 1, sample_freq 145: Fail (nr samples: 5) freq 1, sample_freq 1234: Fail (nr samples: 6) freq 1, sample_freq 65520: Fail (nr samples: 602) freq 1, sample_freq 65535: Fail (nr samples: 618) freq 1, sample_freq 65552: Fail (nr samples: 622) freq 1, sample_freq 8388607: Ok IBS ioctl() tests: ------------------ Fetch PMU tests ioctl(period = 0x0 ): Ok ioctl(period = 0x1 ): Fail ioctl(period = 0xf ): Fail ioctl(period = 0x10 ): Ok ioctl(period = 0x11 ): Fail ioctl(period = 0x1f ): Fail ioctl(period = 0x20 ): Ok ioctl(period = 0x80 ): Ok ioctl(period = 0x8f ): Fail ioctl(period = 0x90 ): Ok ioctl(period = 0x91 ): Fail ioctl(period = 0x100 ): Ok ioctl(period = 0xfff0 ): Ok ioctl(period = 0xffff ): Fail ioctl(period = 0x10000 ): Ok ioctl(period = 0x1fff0 ): Ok ioctl(period = 0x1fff5 ): Fail ioctl(freq = 0x0 ): Ok ioctl(freq = 0x1 ): Ok ioctl(freq = 0xf ): Ok ioctl(freq = 0x10 ): Ok ioctl(freq = 0x11 ): Ok ioctl(freq = 0x1f ): Ok ioctl(freq = 0x20 ): Ok ioctl(freq = 0x80 ): Ok ioctl(freq = 0x8f ): Ok ioctl(freq = 0x90 ): Ok ioctl(freq = 0x91 ): Ok ioctl(freq = 0x100 ): Ok Op PMU tests ioctl(period = 0x0 ): Ok ioctl(period = 0x1 ): Fail ioctl(period = 0xf ): Fail ioctl(period = 0x10 ): Fail ioctl(period = 0x11 ): Fail ioctl(period = 0x1f ): Fail ioctl(period = 0x20 ): Fail ioctl(period = 0x80 ): Fail ioctl(period = 0x8f ): Fail ioctl(period = 0x90 ): Ok ioctl(period = 0x91 ): Fail ioctl(period = 0x100 ): Ok ioctl(period = 0xfff0 ): Ok ioctl(period = 0xffff ): Fail ioctl(period = 0x10000 ): Ok ioctl(period = 0x1fff0 ): Ok ioctl(period = 0x1fff5 ): Fail ioctl(freq = 0x0 ): Ok ioctl(freq = 0x1 ): Ok ioctl(freq = 0xf ): Ok ioctl(freq = 0x10 ): Ok ioctl(freq = 0x11 ): Ok ioctl(freq = 0x1f ): Ok ioctl(freq = 0x20 ): Ok ioctl(freq = 0x80 ): Ok ioctl(freq = 0x8f ): Ok ioctl(freq = 0x90 ): Ok ioctl(freq = 0x91 ): Ok ioctl(freq = 0x100 ): Ok IBS freq (negative) tests: -------------------------- freq 1, sample_freq 200000: Fail IBS L3MissOnly test: (takes a while) -------------------- Fetch L3MissOnly: Fail (nr_samples: 1159) Op L3MissOnly: Ok (nr_samples: 1205) ---- end(-1) ---- 75: AMD IBS sample period : FAILED! With patches: $ sudo ./perf test -vv 112 112: AMD IBS sample period: --- start --- test child forked, pid 44042 Using CPUID AuthenticAMD-26-2-1 IBS config tests: ----------------- Fetch PMU tests: 0xffff : Ok (nr samples: 1278) 0x1000 : Ok (nr samples: 20129) 0xff : Ok (nr samples: 40529) 0x1 : Ok (nr samples: 40443) 0x0 : Ok 0x10000 : Ok Op PMU tests: 0x0 : Ok 0x1 : Ok 0x8 : Ok 0x9 : Ok (nr samples: 40443) 0xf : Ok (nr samples: 40761) 0x1000 : Ok (nr samples: 20808) 0xffff : Ok (nr samples: 1261) 0x10000 : Ok 0x100000 : Ok (nr samples: 1276) 0xf00000 : Ok (nr samples: 87) 0xf0ffff : Ok (nr samples: 77) 0x1f0ffff : Ok (nr samples: 39) 0x7f0ffff : Ok (nr samples: 8) 0x8f0ffff : Ok 0x17f0ffff : Ok IBS sample period constraint tests: ----------------------------------- Fetch PMU test: freq 0, sample_freq 0: Ok freq 0, sample_freq 1: Ok freq 0, sample_freq 15: Ok freq 0, sample_freq 16: Ok (nr samples: 1272) freq 0, sample_freq 17: Ok (nr samples: 1272) freq 0, sample_freq 143: Ok (nr samples: 1590) freq 0, sample_freq 144: Ok (nr samples: 1272) freq 0, sample_freq 145: Ok (nr samples: 1272) freq 0, sample_freq 1234: Ok (nr samples: 1272) freq 0, sample_freq 4103: Ok (nr samples: 1272) freq 0, sample_freq 65520: Ok (nr samples: 2530) freq 0, sample_freq 65535: Ok (nr samples: 2339) freq 0, sample_freq 65552: Ok (nr samples: 2546) freq 0, sample_freq 8388607: Ok (nr samples: 30) freq 1, sample_freq 0: Ok freq 1, sample_freq 1: Ok (nr samples: 4) freq 1, sample_freq 15: Ok (nr samples: 4) freq 1, sample_freq 16: Ok (nr samples: 4) freq 1, sample_freq 17: Ok (nr samples: 4) freq 1, sample_freq 143: Ok (nr samples: 5) freq 1, sample_freq 144: Ok (nr samples: 5) freq 1, sample_freq 145: Ok (nr samples: 5) freq 1, sample_freq 1234: Ok (nr samples: 9) freq 1, sample_freq 4103: Ok (nr samples: 36) freq 1, sample_freq 65520: Ok (nr samples: 954) freq 1, sample_freq 65535: Ok (nr samples: 1590) freq 1, sample_freq 65552: Ok (nr samples: 1272) freq 1, sample_freq 8388607: Ok Op PMU test: freq 0, sample_freq 0: Ok freq 0, sample_freq 1: Ok freq 0, sample_freq 15: Ok freq 0, sample_freq 16: Ok freq 0, sample_freq 17: Ok freq 0, sample_freq 143: Ok freq 0, sample_freq 144: Ok (nr samples: 1272) freq 0, sample_freq 145: Ok (nr samples: 1272) freq 0, sample_freq 1234: Ok (nr samples: 1272) freq 0, sample_freq 4103: Ok (nr samples: 1272) freq 0, sample_freq 65520: Ok (nr samples: 2599) freq 0, sample_freq 65535: Ok (nr samples: 2558) freq 0, sample_freq 65552: Ok (nr samples: 2480) freq 0, sample_freq 8388607: Ok (nr samples: 31) freq 1, sample_freq 0: Ok freq 1, sample_freq 1: Ok (nr samples: 4) freq 1, sample_freq 15: Ok (nr samples: 4) freq 1, sample_freq 16: Ok (nr samples: 4) freq 1, sample_freq 17: Ok (nr samples: 4) freq 1, sample_freq 143: Ok (nr samples: 5) freq 1, sample_freq 144: Ok (nr samples: 5) freq 1, sample_freq 145: Ok (nr samples: 5) freq 1, sample_freq 1234: Ok (nr samples: 8) freq 1, sample_freq 4103: Ok (nr samples: 30) freq 1, sample_freq 65520: Ok (nr samples: 577) freq 1, sample_freq 65535: Ok (nr samples: 585) freq 1, sample_freq 65552: Ok (nr samples: 577) freq 1, sample_freq 8388607: Ok IBS ioctl() tests: ------------------ Fetch PMU tests ioctl(period = 0x0 ): Ok ioctl(period = 0x1 ): Ok ioctl(period = 0xf ): Ok ioctl(period = 0x10 ): Ok ioctl(period = 0x11 ): Ok ioctl(period = 0x1f ): Ok ioctl(period = 0x20 ): Ok ioctl(period = 0x80 ): Ok ioctl(period = 0x8f ): Ok ioctl(period = 0x90 ): Ok ioctl(period = 0x91 ): Ok ioctl(period = 0x100 ): Ok ioctl(period = 0xfff0 ): Ok ioctl(period = 0xffff ): Ok ioctl(period = 0x10000 ): Ok ioctl(period = 0x1fff0 ): Ok ioctl(period = 0x1fff5 ): Ok ioctl(freq = 0x0 ): Ok ioctl(freq = 0x1 ): Ok ioctl(freq = 0xf ): Ok ioctl(freq = 0x10 ): Ok ioctl(freq = 0x11 ): Ok ioctl(freq = 0x1f ): Ok ioctl(freq = 0x20 ): Ok ioctl(freq = 0x80 ): Ok ioctl(freq = 0x8f ): Ok ioctl(freq = 0x90 ): Ok ioctl(freq = 0x91 ): Ok ioctl(freq = 0x100 ): Ok Op PMU tests ioctl(period = 0x0 ): Ok ioctl(period = 0x1 ): Ok ioctl(period = 0xf ): Ok ioctl(period = 0x10 ): Ok ioctl(period = 0x11 ): Ok ioctl(period = 0x1f ): Ok ioctl(period = 0x20 ): Ok ioctl(period = 0x80 ): Ok ioctl(period = 0x8f ): Ok ioctl(period = 0x90 ): Ok ioctl(period = 0x91 ): Ok ioctl(period = 0x100 ): Ok ioctl(period = 0xfff0 ): Ok ioctl(period = 0xffff ): Ok ioctl(period = 0x10000 ): Ok ioctl(period = 0x1fff0 ): Ok ioctl(period = 0x1fff5 ): Ok ioctl(freq = 0x0 ): Ok ioctl(freq = 0x1 ): Ok ioctl(freq = 0xf ): Ok ioctl(freq = 0x10 ): Ok ioctl(freq = 0x11 ): Ok ioctl(freq = 0x1f ): Ok ioctl(freq = 0x20 ): Ok ioctl(freq = 0x80 ): Ok ioctl(freq = 0x8f ): Ok ioctl(freq = 0x90 ): Ok ioctl(freq = 0x91 ): Ok ioctl(freq = 0x100 ): Ok IBS freq (negative) tests: -------------------------- freq 1, sample_freq 200000: Ok IBS L3MissOnly test: (takes a while) -------------------- Fetch L3MissOnly: Ok (nr_samples: 1408) Op L3MissOnly: Ok (nr_samples: 1456) ---- end(0) ---- 112: AMD IBS sample period : Ok Thanks, Ravi
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