ocfs2/cluster: Track send message timing stats for each socket

Tracks total send and status times for all messages sent on a socket.

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>

2 files changed, 30 insertions, 0 deletions

diff --git a/fs/ocfs2/cluster/tcp.c b/fs/ocfs2/cluster/tcp.c
index efd848334052..4d61e19d6146 100644
--- a/fs/ocfs2/cluster/tcp.c
+++ b/fs/ocfs2/cluster/tcp.c
@@ -224,6 +224,28 @@ static inline void o2net_set_func_stop_time(struct o2net_sock_container *sc)
 # define o2net_set_func_stop_time(a)
 #endif /* CONFIG_DEBUG_FS */
 
+#ifdef CONFIG_OCFS2_FS_STATS
+static void o2net_update_send_stats(struct o2net_send_tracking *nst,
+                                    struct o2net_sock_container *sc)
+{
+        sc->sc_tv_status_total = ktime_add(sc->sc_tv_status_total,
+                                           ktime_sub(ktime_get(),
+                                                     nst->st_status_time));
+        sc->sc_tv_send_total = ktime_add(sc->sc_tv_send_total,
+                                         ktime_sub(nst->st_status_time,
+                                                   nst->st_send_time));
+        sc->sc_tv_acquiry_total = ktime_add(sc->sc_tv_acquiry_total,
+                                            ktime_sub(nst->st_send_time,
+                                                      nst->st_sock_time));
+        sc->sc_send_count++;
+}
+
+#else
+
+# define o2net_update_send_stats(a, b)
+
+#endif /* CONFIG_OCFS2_FS_STATS */
+
 static inline int o2net_reconnect_delay(void)
 {
         return o2nm_single_cluster->cl_reconnect_delay_ms;
@@ -1093,6 +1115,8 @@ int o2net_send_message_vec(u32 msg_type, u32 key, struct kvec *caller_vec,
         o2net_set_nst_status_time(&nst);
         wait_event(nsw.ns_wq, o2net_nsw_completed(nn, &nsw));
 
+        o2net_update_send_stats(&nst, sc);
+
         /* Note that we avoid overwriting the callers status return
          * variable if a system error was reported on the other
          * side. Callers beware. */
diff --git a/fs/ocfs2/cluster/tcp_internal.h b/fs/ocfs2/cluster/tcp_internal.h
index f81576333911..640c6fcef720 100644
--- a/fs/ocfs2/cluster/tcp_internal.h
+++ b/fs/ocfs2/cluster/tcp_internal.h
@@ -179,6 +179,12 @@ struct o2net_sock_container {
         ktime_t                 sc_tv_func_start;
         ktime_t                 sc_tv_func_stop;
 #endif
+#ifdef CONFIG_OCFS2_FS_STATS
+        ktime_t                 sc_tv_acquiry_total;
+        ktime_t                 sc_tv_send_total;
+        ktime_t                 sc_tv_status_total;
+        u32                     sc_send_count;
+#endif
         struct mutex            sc_send_lock;
 };