diff options
| author | David Howells <dhowells@redhat.com> | 2022-11-11 16:47:35 +0300 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2022-12-01 16:36:42 +0300 |
| commit | 32cf8edb079a6a687a2b5dba39a813a0bbd0ddf9 (patch) | |
| tree | acbf8a435043daa16df69c2d9f2fd3ea769cc788 /net/rxrpc/proc.c | |
| parent | 3dd9c8b5f09fd24652729a3da5c5efa3ec2c4590 (diff) | |
| download | linux-32cf8edb079a6a687a2b5dba39a813a0bbd0ddf9.tar.xz | |
rxrpc: Trace/count transmission underflows and cwnd resets
Add a tracepoint to log when a cwnd reset occurs due to lack of
transmission on a call.
Add stat counters to count transmission underflows (ie. when we have tx
window space, but sendmsg doesn't manage to keep up), cwnd resets and
transmission failures.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
Diffstat (limited to 'net/rxrpc/proc.c')
| -rw-r--r-- | net/rxrpc/proc.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/net/rxrpc/proc.c b/net/rxrpc/proc.c index 5af7c8ee4b1a..6816934cb4cf 100644 --- a/net/rxrpc/proc.c +++ b/net/rxrpc/proc.c @@ -398,13 +398,16 @@ int rxrpc_stats_show(struct seq_file *seq, void *v) struct rxrpc_net *rxnet = rxrpc_net(seq_file_single_net(seq)); seq_printf(seq, - "Data : send=%u sendf=%u\n", + "Data : send=%u sendf=%u fail=%u\n", atomic_read(&rxnet->stat_tx_data_send), - atomic_read(&rxnet->stat_tx_data_send_frag)); + atomic_read(&rxnet->stat_tx_data_send_frag), + atomic_read(&rxnet->stat_tx_data_send_fail)); seq_printf(seq, - "Data-Tx : nr=%u retrans=%u\n", + "Data-Tx : nr=%u retrans=%u uf=%u cwr=%u\n", atomic_read(&rxnet->stat_tx_data), - atomic_read(&rxnet->stat_tx_data_retrans)); + atomic_read(&rxnet->stat_tx_data_retrans), + atomic_read(&rxnet->stat_tx_data_underflow), + atomic_read(&rxnet->stat_tx_data_cwnd_reset)); seq_printf(seq, "Data-Rx : nr=%u reqack=%u jumbo=%u\n", atomic_read(&rxnet->stat_rx_data), @@ -472,8 +475,11 @@ int rxrpc_stats_clear(struct file *file, char *buf, size_t size) atomic_set(&rxnet->stat_tx_data, 0); atomic_set(&rxnet->stat_tx_data_retrans, 0); + atomic_set(&rxnet->stat_tx_data_underflow, 0); + atomic_set(&rxnet->stat_tx_data_cwnd_reset, 0); atomic_set(&rxnet->stat_tx_data_send, 0); atomic_set(&rxnet->stat_tx_data_send_frag, 0); + atomic_set(&rxnet->stat_tx_data_send_fail, 0); atomic_set(&rxnet->stat_rx_data, 0); atomic_set(&rxnet->stat_rx_data_reqack, 0); atomic_set(&rxnet->stat_rx_data_jumbo, 0); |