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| author | Nayana Bidari <nybidari@google.com> | 2021-10-07 16:48:28 -0700 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2021-10-07 16:51:06 -0700 |
| commit | 487651ac46f302592ccffc9e5a4336a331010e42 (patch) | |
| tree | 3175111e0821c590f48fb4d4f469c5d7d2bf1de6 /pkg/sentry | |
| parent | 0743a862e5e90368291ad4ef9061f3c4ca3a065f (diff) | |
Add a new metric to detect the number of spurious loss recoveries.
- Implements RFC 3522 (Eifel detection algorithm) to detect if the connection
entered loss recovery unnecessarily.
- Added a new metric to count the total number of spurious loss recoveries.
- Added tests to verify the new metric.
PiperOrigin-RevId: 401637359
Diffstat (limited to 'pkg/sentry')
| -rw-r--r-- | pkg/sentry/socket/netstack/netstack.go | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/pkg/sentry/socket/netstack/netstack.go b/pkg/sentry/socket/netstack/netstack.go index d3564724b..030c6c8e4 100644 --- a/pkg/sentry/socket/netstack/netstack.go +++ b/pkg/sentry/socket/netstack/netstack.go @@ -274,6 +274,7 @@ var Metrics = tcpip.Stats{ ChecksumErrors: mustCreateMetric("/netstack/tcp/checksum_errors", "Number of segments dropped due to bad checksums."), FailedPortReservations: mustCreateMetric("/netstack/tcp/failed_port_reservations", "Number of time TCP failed to reserve a port."), SegmentsAckedWithDSACK: mustCreateMetric("/netstack/tcp/segments_acked_with_dsack", "Number of segments for which DSACK was received."), + SpuriousRecovery: mustCreateMetric("/netstack/tcp/spurious_recovery", "Number of times the connection entered loss recovery spuriously."), }, UDP: tcpip.UDPStats{ PacketsReceived: mustCreateMetric("/netstack/udp/packets_received", "Number of UDP datagrams received via HandlePacket."), |