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| author |   Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp> | 2018-01-17 15:38:25 +0900 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-01-22 15:25:37 -0500 |
| commit | d7dfc5cf56b0e34f52d70260b024335e98f4c8c9 (patch) | |
| tree | 0d6b9c1acfc1e0844761a053b12e9cca82921f23 /tools/perf/scripts/python/export-to-sqlite.py | |
| parent | Merge branch 'mvpp2-Armada-7k-8k-PP2-ACPI-support' (diff) | |
| download | linux-dev-d7dfc5cf56b0e34f52d70260b024335e98f4c8c9.tar.xz linux-dev-d7dfc5cf56b0e34f52d70260b024335e98f4c8c9.zip | |
virtio_net: Add ethtool stats
The main purpose of this patch is adding a way of checking per-queue stats.
It's useful to debug performance problems on multiqueue environment.
$ ethtool -S ens10
NIC statistics:
rx_queue_0_packets: 2090408
rx_queue_0_bytes: 3164825094
rx_queue_1_packets: 2082531
rx_queue_1_bytes: 3152932314
tx_queue_0_packets: 2770841
tx_queue_0_bytes: 4194955474
tx_queue_1_packets: 3084697
tx_queue_1_bytes: 4670196372
This change converts existing per-cpu stats structure into per-queue one.
This should not impact on performance since each queue counter is not
updated concurrently by multiple cpus.
Performance numbers:
- Guest has 2 vcpus and 2 queues
- Guest runs netserver
- Host runs 100-flow super_netperf
Before After Diff
UDP_STREAM 18byte 86.22 87.00 +0.90%
UDP_STREAM 1472byte 4055.27 4042.18 -0.32%
TCP_STREAM 16956.32 16890.63 -0.39%
UDP_RR 178667.11 185862.70 +4.03%
TCP_RR 128473.04 124985.81 -2.71%
Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools/perf/scripts/python/export-to-sqlite.py')
0 files changed, 0 insertions, 0 deletions