diff options
| author | Bhasker Hariharan <bhaskerh@google.com> | 2019-06-13 22:26:59 -0700 |
|---|---|---|
| committer | Shentubot <shentubot@google.com> | 2019-06-13 22:28:01 -0700 |
| commit | 3d71c627fa03a2da694ec88d690c633a15951fb0 (patch) | |
| tree | 6852d56175b4d438d524aa4a59a9eca4a67bc2a9 /pkg/sentry | |
| parent | 3e9b8ecbfe21ba6c8c788be469fc6cea6a4a40b7 (diff) | |
Add support for TCP receive buffer auto tuning.
The implementation is similar to linux where we track the number of bytes
consumed by the application to grow the receive buffer of a given TCP endpoint.
This ensures that the advertised window grows at a reasonable rate to accomodate
for the sender's rate and prevents large amounts of data being held in stack
buffers if the application is not actively reading or not reading fast enough.
The original paper that was used to implement the linux receive buffer auto-
tuning is available @ https://public.lanl.gov/radiant/pubs/drs/lacsi2001.pdf
NOTE: Linux does not implement DRS as defined in that paper, it's just a good
reference to understand the solution space.
Updates #230
PiperOrigin-RevId: 253168283
Diffstat (limited to 'pkg/sentry')
| -rw-r--r-- | pkg/sentry/socket/epsocket/epsocket.go | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/pkg/sentry/socket/epsocket/epsocket.go b/pkg/sentry/socket/epsocket/epsocket.go index ce3b247d0..a42cf4caf 100644 --- a/pkg/sentry/socket/epsocket/epsocket.go +++ b/pkg/sentry/socket/epsocket/epsocket.go @@ -1719,6 +1719,7 @@ func (s *SocketOperations) coalescingRead(ctx context.Context, dst usermem.IOSeq // If we managed to copy something, we must deliver it. if copied > 0 { + s.Endpoint.ModerateRecvBuf(copied) return copied, nil } |