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Multiply port data XMIT/RCV metrics by 4 (#579)

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According to Mellanox, it is standard practice that the port_xmit_data and port_rcv_data
files are split into 4 lanes. To get the actual transmit and receive values for each
port, the metric needs to be multiplied by 4.

Signed-Off-By: Robert Clark <robert.d.clark@hpe.com>
This commit is contained in:
Robert Clark 2017-05-12 00:28:53 -05:00 committed by Ben Kochie
parent a14e2c0229
commit 58f50b31f2
2 changed files with 15 additions and 6 deletions
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12
collector/fixtures/e2e-output.txt
View file

@ -703,12 +703,12 @@ node_hwmon_temp_max_celsius{chip="platform_coretemp_1",sensor="temp4"} 84
node_hwmon_temp_max_celsius{chip="platform_coretemp_1",sensor="temp5"} 84
# HELP node_infiniband_legacy_data_received_bytes_total Number of data octets received on all links
# TYPE node_infiniband_legacy_data_received_bytes_total counter
node_infiniband_legacy_data_received_bytes_total{device="mlx4_0",port="1"} 4.631917e+06
node_infiniband_legacy_data_received_bytes_total{device="mlx4_0",port="2"} 4.631917e+06
node_infiniband_legacy_data_received_bytes_total{device="mlx4_0",port="1"} 1.8527668e+07
node_infiniband_legacy_data_received_bytes_total{device="mlx4_0",port="2"} 1.8527668e+07
# HELP node_infiniband_legacy_data_transmitted_bytes_total Number of data octets transmitted on all links
# TYPE node_infiniband_legacy_data_transmitted_bytes_total counter
node_infiniband_legacy_data_transmitted_bytes_total{device="mlx4_0",port="1"} 3.73344e+06
node_infiniband_legacy_data_transmitted_bytes_total{device="mlx4_0",port="2"} 3.73344e+06
node_infiniband_legacy_data_transmitted_bytes_total{device="mlx4_0",port="1"} 1.493376e+07
node_infiniband_legacy_data_transmitted_bytes_total{device="mlx4_0",port="2"} 1.493376e+07
# HELP node_infiniband_legacy_multicast_packets_received_total Number of multicast packets received
# TYPE node_infiniband_legacy_multicast_packets_received_total counter
node_infiniband_legacy_multicast_packets_received_total{device="mlx4_0",port="1"} 93
@ -751,11 +751,11 @@ node_infiniband_multicast_packets_transmitted_total{device="mlx4_0",port="1"} 16
node_infiniband_multicast_packets_transmitted_total{device="mlx4_0",port="2"} 0
# HELP node_infiniband_port_data_received_bytes Number of data octets received on all links
# TYPE node_infiniband_port_data_received_bytes counter
node_infiniband_port_data_received_bytes{device="mlx4_0",port="1"} 4.631917e+06
node_infiniband_port_data_received_bytes{device="mlx4_0",port="1"} 1.8527668e+07
node_infiniband_port_data_received_bytes{device="mlx4_0",port="2"} 0
# HELP node_infiniband_port_data_transmitted_bytes Number of data octets transmitted on all links
# TYPE node_infiniband_port_data_transmitted_bytes counter
node_infiniband_port_data_transmitted_bytes{device="mlx4_0",port="1"} 3.73344e+06
node_infiniband_port_data_transmitted_bytes{device="mlx4_0",port="1"} 1.493376e+07
node_infiniband_port_data_transmitted_bytes{device="mlx4_0",port="2"} 0
# HELP node_infiniband_unicast_packets_received_total Number of unicast packets received (including errors)
# TYPE node_infiniband_unicast_packets_received_total counter

9
collector/infiniband_linux.go
View file

@ -148,6 +148,15 @@ func readMetric(directory, metricFile string) (uint64, error) {
return 0, err
}
// According to Mellanox, the following metrics "are divided by 4 unconditionally"
// as they represent the amount of data being transmitted and received per lane.
// Mellanox cards have 4 lanes per port, so all values must be multiplied by 4
// to get the expected value.
switch metricFile {
case "port_rcv_data", "port_xmit_data", "port_rcv_data_64", "port_xmit_data_64":
metric *= 4
}
return metric, nil
}