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authorPetr Machata <petrm@mellanox.com>2018-09-20 09:21:36 +0300
committerDavid S. Miller <davem@davemloft.net>2018-09-20 17:46:02 +0300
commitb5638d46c90a6998859a4fc9ea697b264da96092 (patch)
treefbfc66ddbb2036532f2a3db778b024121b9ac2c5 /tools/perf/scripts/python/export-to-postgresql.py
parenta381ed12ea33888a08f0e3e5ba22a255fa5f7257 (diff)
downloadlinux-b5638d46c90a6998859a4fc9ea697b264da96092.tar.xz
selftests: mlxsw: Add a test for UC behavior under MC flood
A so-called "MC-aware" mode has recently been enabled in mlxsw. In MC-aware mode, BUM traffic is handled in a special way so that when a switch is flooded with BUM, UC performance isn't unduly impacted. Without enablement of this mode, a stream of BUM traffic can cause sustained UC throughput drop in excess of 99 %. Add a test for this behavior. Compare how much UC throughput degrades as a stream of broadcast frames floods the switch. A minimal degradation is tolerated to cover for glitches in traffic injection performance. Signed-off-by: Petr Machata <petrm@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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