diff options
Diffstat (limited to 'pkg/sentry')
| -rw-r--r-- | pkg/sentry/socket/hostinet/stack.go | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/pkg/sentry/socket/hostinet/stack.go b/pkg/sentry/socket/hostinet/stack.go index 44c3b9a3f..f64809d39 100644 --- a/pkg/sentry/socket/hostinet/stack.go +++ b/pkg/sentry/socket/hostinet/stack.go @@ -84,11 +84,13 @@ func (s *Stack) Configure() error { log.Warningf("Failed to read TCP send buffer size, using default values") } - s.tcpSACKEnabled = false + // SACK is important for performance and even compatibility, assume it's + // enabled if we can't find the actual value. + s.tcpSACKEnabled = true if sack, err := ioutil.ReadFile("/proc/sys/net/ipv4/tcp_sack"); err == nil { s.tcpSACKEnabled = strings.TrimSpace(string(sack)) != "0" } else { - log.Warningf("Failed to read if TCP SACK if enabled, setting to false") + log.Warningf("Failed to read if TCP SACK if enabled, setting to true") } return nil |