From: Harry van Haaren <harry.van.haaren@intel.com>
Date: Wed, 6 May 2020 17:16:42 +0000 (+0100)
Subject: test/service: add perf test for service on app lcore
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=9ec8f11369dd816da9347afc516d8ccdd35f3755;p=dpdk.git

test/service: add perf test for service on app lcore

This commit adds a basic test to check the cycle cost
of related to calling into a service.

Signed-off-by: Harry van Haaren <harry.van.haaren@intel.com>
Tested-by: Phil Yang <phil.yang@arm.com>
Reviewed-by: Phil Yang <phil.yang@arm.com>
---

diff --git a/app/test/test_service_cores.c b/app/test/test_service_cores.c
index a922c7ddcc..981e212130 100644
--- a/app/test/test_service_cores.c
+++ b/app/test/test_service_cores.c
@@ -789,8 +789,19 @@ service_app_lcore_poll_impl(const int mt_safe)
 				"MT Unsafe: App core1 didn't return -EBUSY");
 	}
 
-	unregister_all();
+	/* Performance test: call in a loop, and measure tsc() */
+	const uint32_t perf_iters = (1 << 12);
+	uint64_t start = rte_rdtsc();
+	uint32_t i;
+	for (i = 0; i < perf_iters; i++) {
+		int err = service_run_on_app_core_func(&id);
+		TEST_ASSERT_EQUAL(0, err, "perf test: returned run failure");
+	}
+	uint64_t end = rte_rdtsc();
+	printf("perf test for %s: %0.1f cycles per call\n", mt_safe ?
+		"MT Safe" : "MT Unsafe", (end - start)/(float)perf_iters);
 
+	unregister_all();
 	return TEST_SUCCESS;
 }