From: Dharmik Thakkar <dharmik.thakkar@arm.com>
Date: Fri, 8 May 2020 22:38:25 +0000 (+0000)
Subject: app/testpmd: print clock with CPU cycles per packet
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=4c0497b1dd531c3f72e8cbfab32e32350a9cbfa5;p=dpdk.git

app/testpmd: print clock with CPU cycles per packet

On aarch64 platforms, the cycles are counted using either a
low-resolution generic counter or a high-resolution PMU cycle counter.
Print the clock frequency along with CPU cycles/packet to identify which
cycle counter is being used.

Signed-off-by: Dharmik Thakkar <dharmik.thakkar@arm.com>
Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
Reviewed-by: Phil Yang <phil.yang@arm.com>
Acked-by: Bernard Iremonger <bernard.iremonger@intel.com>
---

diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
index 9cbe6e9f68..b112f83970 100644
--- a/app/test-pmd/testpmd.c
+++ b/app/test-pmd/testpmd.c
@@ -1960,11 +1960,14 @@ fwd_stats_display(void)
 	       "%s\n",
 	       acc_stats_border, acc_stats_border);
 #ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
+#define CYC_PER_MHZ 1E6
 	if (total_recv > 0)
 		printf("\n  CPU cycles/packet=%u (total cycles="
-		       "%"PRIu64" / total RX packets=%"PRIu64")\n",
+		       "%"PRIu64" / total RX packets=%"PRIu64") at %"PRIu64
+		       " MHz Clock\n",
 		       (unsigned int)(fwd_cycles / total_recv),
-		       fwd_cycles, total_recv);
+		       fwd_cycles, total_recv,
+		       (uint64_t)(rte_get_tsc_hz() / CYC_PER_MHZ));
 #endif
 }