diff options
| author | wollman <wollman@FreeBSD.org> | 1995-06-19 16:45:33 +0000 |
|---|---|---|
| committer | wollman <wollman@FreeBSD.org> | 1995-06-19 16:45:33 +0000 |
| commit | a1aa4b6c803d61e08c672ed170fb6dd85a00772f (patch) | |
| tree | 393189ae6d0573852a4a88c1ad9cf03f1c79436b /sys/netinet/tcp_timewait.c | |
| parent | 4e33c8eed30fa60dfd518a6a7fdf5c7eceeabd57 (diff) | |
| download | FreeBSD-src-a1aa4b6c803d61e08c672ed170fb6dd85a00772f.zip FreeBSD-src-a1aa4b6c803d61e08c672ed170fb6dd85a00772f.tar.gz | |
Now that we've gone to all sorts of effort to allow TCP to cache some of
its connection parameters, we want to keep statistics on how often this
actually happens to see whether there is any work that needs to be done in
TCP itself.
Suggested by: John Wroclawski <jtw@lcs.mit.edu>
Diffstat (limited to 'sys/netinet/tcp_timewait.c')
| -rw-r--r-- | sys/netinet/tcp_timewait.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/sys/netinet/tcp_timewait.c b/sys/netinet/tcp_timewait.c index 381824d..b2f96a2 100644 --- a/sys/netinet/tcp_timewait.c +++ b/sys/netinet/tcp_timewait.c @@ -31,7 +31,7 @@ * SUCH DAMAGE. * * @(#)tcp_subr.c 8.1 (Berkeley) 6/10/93 - * $Id: tcp_subr.c,v 1.10 1995/04/09 01:29:26 davidg Exp $ + * $Id: tcp_subr.c,v 1.11 1995/05/30 08:09:58 rgrimes Exp $ */ #include <sys/param.h> @@ -333,6 +333,7 @@ tcp_close(tp) (rt->rt_rmx.rmx_rtt + i) / 2; else rt->rt_rmx.rmx_rtt = i; + tcpstat.tcps_cachedrtt++; } if ((rt->rt_rmx.rmx_locks & RTV_RTTVAR) == 0) { i = tp->t_rttvar * @@ -342,6 +343,7 @@ tcp_close(tp) (rt->rt_rmx.rmx_rttvar + i) / 2; else rt->rt_rmx.rmx_rttvar = i; + tcpstat.tcps_cachedrttvar++; } /* * update the pipelimit (ssthresh) if it has been updated @@ -366,6 +368,7 @@ tcp_close(tp) (rt->rt_rmx.rmx_ssthresh + i) / 2; else rt->rt_rmx.rmx_ssthresh = i; + tcpstat.tcps_cachedssthresh++; } } #endif /* RTV_RTT */ |
