diff options
| author | David Howells <dhowells@redhat.com> | 2024-12-04 07:47:07 +0000 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-12-09 13:48:33 -0800 |
| commit | 7c482665931b6ce7bc72fa5feae6c35567070296 (patch) | |
| tree | a97e28155f864d42668731c195828491f01e33d1 /net/rxrpc/call_object.c | |
| parent | 4ee4c2f82b81c088d1514b04c28c84c15e98ba1a (diff) | |
rxrpc: Implement RACK/TLP to deal with transmission stalls [RFC8985]
When an rxrpc call is in its transmission phase and is sending a lot of
packets, stalls occasionally occur that cause severe performance
degradation (eg. increasing the transmission time for a 256MiB payload from
0.7s to 2.5s over a 10G link).
rxrpc already implements TCP-style congestion control [RFC5681] and this
helps mitigate the effects, but occasionally we're missing a time event
that deals with a missing ACK, leading to a stall until the RTO expires.
Fix this by implementing RACK/TLP in rxrpc.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/rxrpc/call_object.c')
| -rw-r--r-- | net/rxrpc/call_object.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/net/rxrpc/call_object.c b/net/rxrpc/call_object.c index fb4ee0d2e9e1..5a543c3f6fb0 100644 --- a/net/rxrpc/call_object.c +++ b/net/rxrpc/call_object.c @@ -160,8 +160,7 @@ struct rxrpc_call *rxrpc_alloc_call(struct rxrpc_sock *rx, gfp_t gfp, call->ackr_window = 1; call->ackr_wtop = 1; call->delay_ack_at = KTIME_MAX; - call->ack_lost_at = KTIME_MAX; - call->resend_at = KTIME_MAX; + call->rack_timo_at = KTIME_MAX; call->ping_at = KTIME_MAX; call->keepalive_at = KTIME_MAX; call->expect_rx_by = KTIME_MAX; |