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app/testpmd: fix burst stats reporting

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When RTE_TEST_PMD_RECORD_BURST_STATS is enabled, testpmd collects
burst statistics and includes them in the port stats report.  The
summary should include top 2 most frequent burst sizes, but there is a
bug in finding the top-2.  During the scan of burst size counts, the
top-2 can change only if top-1 also changes.

Added logic to update the top-2 if current burst size is larger than
existing top-2, but smaller than existing top-1.

Fixes: af75078fece3 ("first public release")
Cc: stable@dpdk.org

Signed-off-by: Daniel Shelepov <dashel@microsoft.com>
Acked-by: Bernard Iremonger <bernard.iremonger@intel.com>
This commit is contained in:
Daniel Shelepov 2018-05-14 21:12:15 +00:00 committed by Thomas Monjalon
parent 4022248efe
commit fe613657ce
1 changed files with 3 additions and 0 deletions
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3
app/test-pmd/testpmd.c
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@ -951,6 +951,9 @@ pkt_burst_stats_display(const char *rx_tx, struct pkt_burst_stats *pbs)
pktnb_stats[1] = pktnb_stats[0];
burst_stats[0] = nb_burst;
pktnb_stats[0] = nb_pkt;
} else if (nb_burst > burst_stats[1]) {
burst_stats[1] = nb_burst;
pktnb_stats[1] = nb_pkt;
}
}
if (total_burst == 0)