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vm-virtio: net: Implement counters for network traffic

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Add counters for RX/TX bytes and RX/TX frames. These are collected on a
per queue basis and then accumulated into an atomic shared value across
the different threads for the device as a whole.

Collecting and accumulating these counters makes minimal difference in
the iperf results. Any difference seen is within what is observed as
natural variation in this test.

e.g.

With counter updates:

$ iperf3 -c 192.168.249.2
Connecting to host 192.168.249.2, port 5201
[  5] local 192.168.249.1 port 52706 connected to 192.168.249.2 port 5201
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.00   sec  6.19 GBytes  53.2 Gbits/sec    0   3.01 MBytes
[  5]   1.00-2.00   sec  6.31 GBytes  54.2 Gbits/sec    0   3.01 MBytes
[  5]   2.00-3.00   sec  6.29 GBytes  54.0 Gbits/sec    0   3.01 MBytes
[  5]   3.00-4.00   sec  6.22 GBytes  53.4 Gbits/sec    0   3.01 MBytes
[  5]   4.00-5.00   sec  6.14 GBytes  52.8 Gbits/sec    0   3.01 MBytes
[  5]   5.00-6.00   sec  6.13 GBytes  52.7 Gbits/sec    0   3.01 MBytes
[  5]   6.00-7.00   sec  6.20 GBytes  53.3 Gbits/sec    0   3.01 MBytes
[  5]   7.00-8.00   sec  6.16 GBytes  52.9 Gbits/sec    0   3.01 MBytes
[  5]   8.00-9.00   sec  6.13 GBytes  52.6 Gbits/sec    0   3.01 MBytes
[  5]   9.00-10.00  sec  6.15 GBytes  52.8 Gbits/sec    0   3.01 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec  61.9 GBytes  53.2 Gbits/sec    0             sender
[  5]   0.00-10.00  sec  61.9 GBytes  53.2 Gbits/sec                  receiver

iperf Done.

Without counter updates:

$ iperf3 -c 192.168.249.2
Connecting to host 192.168.249.2, port 5201
[  5] local 192.168.249.1 port 52716 connected to 192.168.249.2 port 5201
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.00   sec  6.29 GBytes  54.1 Gbits/sec    0   3.03 MBytes
[  5]   1.00-2.00   sec  6.18 GBytes  53.1 Gbits/sec    0   3.03 MBytes
[  5]   2.00-3.00   sec  6.26 GBytes  53.8 Gbits/sec    0   3.03 MBytes
[  5]   3.00-4.00   sec  6.24 GBytes  53.6 Gbits/sec    0   3.03 MBytes
[  5]   4.00-5.00   sec  6.27 GBytes  53.9 Gbits/sec    1   3.03 MBytes
[  5]   5.00-6.00   sec  6.31 GBytes  54.2 Gbits/sec    0   3.03 MBytes
[  5]   6.00-7.00   sec  6.29 GBytes  54.1 Gbits/sec    0   3.03 MBytes
[  5]   7.00-8.00   sec  6.16 GBytes  52.9 Gbits/sec    0   3.03 MBytes
[  5]   8.00-9.00   sec  6.13 GBytes  52.6 Gbits/sec    0   3.03 MBytes
[  5]   9.00-10.00  sec  6.25 GBytes  53.7 Gbits/sec    0   3.03 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec  62.4 GBytes  53.6 Gbits/sec    1             sender
[  5]   0.00-10.00  sec  62.4 GBytes  53.6 Gbits/sec                  receiver

iperf Done.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This commit is contained in:
Rob Bradford
2020-06-23 16:28:41 +01:00
committed by Samuel Ortiz
parent 0583ce921b
commit 2b4a0358de
3 changed files with 55 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
vhost_user_net/src/lib.rs
View File

@@ -30,7 +30,7 @@ use virtio_bindings::bindings::virtio_net::*;
use virtio_bindings::bindings::virtio_ring::VIRTIO_RING_F_EVENT_IDX;
use vm_memory::{GuestMemoryAtomic, GuestMemoryMmap};
use vm_virtio::net_util::{open_tap, RxVirtio, TxVirtio};
use vm_virtio::NetQueuePair;
use vm_virtio::{NetCounters, NetQueuePair};
use vmm::config::{OptionParser, OptionParserError};
use vmm_sys_util::eventfd::EventFd;
@@ -111,6 +111,7 @@ impl VhostUserNetThread {
tx: TxVirtio::new(),
rx_tap_listening: false,
epoll_fd: None,
counters: NetCounters::default(),
},
})
}