Lines Matching full:statistics

4 Interface statistics
10 This document is a guide to Linux network interface statistics.
12 There are three main sources of interface statistics in Linux:
14  - standard interface statistics based on
16  - protocol-specific statistics; and
17  - driver-defined statistics available via ethtool.
19 Standard interface statistics
22 There are multiple interfaces to reach the standard statistics.
44 Protocol-specific statistics
48 to report related statistics. For example ethtool interface used
51   $ ethtool --include-statistics -a eth0
56   Statistics:
60 Driver-defined statistics
63 Driver-defined ethtool statistics can be dumped using `ethtool -S $ifc`, e.g.::
66   NIC statistics:
77 of interfaces as well as their statistics.
86 Each device directory in sysfs contains a `statistics` directory (e.g.
87 `/sys/class/net/lo/statistics/`) with files corresponding to
97 `Documentation/ABI/testing/sysfs-class-net-statistics`.
106 Statistics are reported both in the responses to link information
114 specific statistics. Historically it has also been used to report
115 statistics for which other APIs did not exist, like per-device-queue
116 statistics, or standard-based statistics (e.g. RFC 2863).
118 Statistics and their string identifiers are retrieved separately.
121 to retrieve the number of statistics (`.n_stats`).
128 Protocol-related statistics can be requested in get commands by setting
130 statistics are supported in the following commands:
137 Some drivers expose extra statistics via `debugfs`.
148 Drivers should report all statistics which have a matching member in
155 Please note for example that detailed error statistics must be
159 via `/proc/net/dev`. If driver may sleep when retrieving the statistics
162 allows setting the frequency of refreshing statistics, if needed.
164 Retrieving ethtool statistics is a multi-syscall process, drivers are advised
165 to keep the number of statistics constant to avoid race conditions with
168 Statistics must persist across routine operations like bringing the interface
176 the statistics they don't report with 0.