nfsstat.c: Implements an optional "interval" argument to --sleep
nfsstat.man: Explains the use of --sleep[interval]
Signed-off-by: Kevin Constantine <kevin.constantine@xxxxxxxxxxxxxxxxxxx>
---
utils/nfsstat/nfsstat.c | 107 ++++++++++++++++++++++++++++++++++-----------
utils/nfsstat/nfsstat.man | 6 ++-
2 files changed, 86 insertions(+), 27 deletions(-)
diff --git a/utils/nfsstat/nfsstat.c b/utils/nfsstat/nfsstat.c
index 1517414..a447cf9 100644
--- a/utils/nfsstat/nfsstat.c
+++ b/utils/nfsstat/nfsstat.c
@@ -167,6 +167,9 @@ DECLARE_SRV(srvinfo, _old);
DECLARE_CLT(cltinfo);
DECLARE_CLT(cltinfo, _old);
+static void print_all_stats(int, int, int);
+static void print_server_stats(int, int);
+static void print_client_stats(int, int);
static void print_numbers(const char *, unsigned int *,
unsigned int);
static void print_callstats(const char *, const char **,
@@ -183,6 +186,7 @@ static void get_stats(const char *, struct statinfo *, int *, int,
static int has_stats(const unsigned int *);
static void diff_stats(struct statinfo *, struct statinfo *, int);
static void unpause(int);
+static void update_old_counters(struct statinfo *, struct statinfo *);
static time_t starttime;
@@ -207,26 +211,29 @@ void usage(char *name)
{
printf("Usage: %s [OPTION]...\n\
\n\
- -m, --mounts\t\tShow statistics on mounted NFS filesystems\n\
- -c, --client\t\tShow NFS client statistics\n\
- -s, --server\t\tShow NFS server statistics\n\
- -2\t\t\tShow NFS version 2 statistics\n\
- -3\t\t\tShow NFS version 3 statistics\n\
- -4\t\t\tShow NFS version 4 statistics\n\
- -o [facility]\t\tShow statistics on particular facilities.\n\
- nfs\tNFS protocol information\n\
- rpc\tGeneral RPC information\n\
- net\tNetwork layer statistics\n\
- fh\t\tUsage information on the server's file handle cache\n\
- rc\t\tUsage information on the server's request reply cache\n\
- all\tSelect all of the above\n\
- -v, --verbose, --all\tSame as '-o all'\n\
- -r, --rpc\t\tShow RPC statistics\n\
- -n, --nfs\t\tShow NFS statistics\n\
- -Z, --sleep\t\tSaves stats, pauses, diffs current and saved\n\
- -S, --since file\tShows difference between current stats and those in 'file'\n\
- --version\t\tShow program version\n\
- --help\t\tWhat you just did\n\
+ -m, --mounts Show statistics on mounted NFS filesystems\n\
+ -c, --client Show NFS client statistics\n\
+ -s, --server Show NFS server statistics\n\
+ -2 Show NFS version 2 statistics\n\
+ -3 Show NFS version 3 statistics\n\
+ -4 Show NFS version 4 statistics\n\
+ -o [facility] Show statistics on particular facilities.\n\
+ nfs NFS protocol information\n\
+ rpc General RPC information\n\
+ net Network layer statistics\n\
+ fh Usage information on the server's file handle cache\n\
+ rc Usage information on the server's request reply cache\n\
+ all Select all of the above\n\
+ -v, --verbose, --all Same as '-o all'\n\
+ -r, --rpc Show RPC statistics\n\
+ -n, --nfs Show NFS statistics\n\
+ -Z[#], --sleep[=#] Collects stats until interrupted.\n\
+ Cumulative stats are then printed\n\
+ If # is provided, stats will be output every\n\
+ # seconds.\n\
+ -S, --since file Shows difference between current stats and those in 'file'\n\
+ --version Show program version\n\
+ --help What you just did\n\
\n", name);
exit(0);
}
@@ -245,7 +252,7 @@ static struct option longopts[] =
{ "zero", 0, 0, 'z' },
{ "help", 0, 0, '\1' },
{ "version", 0, 0, '\2' },
- { "sleep", 0, 0, 'Z' },
+ { "sleep", 2, 0, 'Z' },
{ "since", 1, 0, 'S' },
{ NULL, 0, 0, 0 }
};
@@ -258,6 +265,7 @@ main(int argc, char **argv)
opt_clt = 0,
opt_prt = 0,
opt_sleep = 0,
+ sleep_time = 0,
opt_since = 0;
int c;
char *progname,
@@ -279,7 +287,7 @@ main(int argc, char **argv)
else
progname = argv[0];
- while ((c = getopt_long(argc, argv, "234acmno:ZS:vrsz\1\2", longopts, NULL)) != EOF) {
+ while ((c = getopt_long(argc, argv, "234acmno:Z::S:vrsz\1\2", longopts, NULL)) != EOF) {
switch (c) {
case 'a':
fprintf(stderr, "nfsstat: nfs acls are not yet supported.\n");
@@ -311,6 +319,9 @@ main(int argc, char **argv)
break;
case 'Z':
opt_sleep = 1;
+ if (optarg) {
+ sleep_time = atoi(optarg);
+ }
break;
case 'S':
opt_since = 1;
@@ -384,7 +395,7 @@ main(int argc, char **argv)
if (opt_clt)
get_stats(clientfile, clientinfo, &opt_clt, opt_srv, 0);
- if (opt_sleep) {
+ if (opt_sleep && !sleep_time) {
starttime = time(NULL);
printf("Collecting statistics; press CTRL-C to view results from interval (i.e., from pause to CTRL-C).\n");
if (sigaction(SIGINT, &act, NULL) != 0) {
@@ -404,7 +415,40 @@ main(int argc, char **argv)
diff_stats(clientinfo_tmp, clientinfo, 0);
}
}
+ if(sleep_time) {
+ while(1) {
+ if (opt_srv) {
+ get_stats(NFSSRVSTAT, serverinfo_tmp , &opt_srv, opt_clt, 1);
+ diff_stats(serverinfo_tmp, serverinfo, 1);
+ }
+ if (opt_clt) {
+ get_stats(NFSCLTSTAT, clientinfo_tmp, &opt_clt, opt_srv, 0);
+ diff_stats(clientinfo_tmp, clientinfo, 0);
+ }
+ print_all_stats(opt_srv, opt_clt, opt_prt);
+ printf("\n\n");
+ fflush(stdout);
+
+ update_old_counters(clientinfo_tmp, clientinfo);
+ sleep(sleep_time);
+ }
+ } else {
+ print_all_stats(opt_srv, opt_clt, opt_prt);
+ }
+
+ return 0;
+}
+
+static void
+print_all_stats (int opt_srv, int opt_clt, int opt_prt)
+{
+ print_server_stats(opt_srv, opt_prt);
+ print_client_stats(opt_clt, opt_prt);
+}
+static void
+print_server_stats(int opt_srv, int opt_prt)
+{
if (opt_srv) {
if (opt_prt & PRNT_NET) {
print_numbers(
@@ -479,7 +523,10 @@ main(int argc, char **argv)
}
}
}
-
+}
+static void
+print_client_stats(int opt_clt, int opt_prt)
+{
if (opt_clt) {
if (opt_prt & PRNT_NET) {
print_numbers(
@@ -515,8 +562,6 @@ main(int argc, char **argv)
);
}
}
-
- return 0;
}
static statinfo *
@@ -846,3 +891,13 @@ unpause(int sig)
seconds = (int)time_diff % 60;
printf("Signal received; displaying (only) statistics gathered over the last %d minutes, %d seconds:\n\n", minutes, seconds);
}
+
+static void
+update_old_counters(struct statinfo *new, struct statinfo *old)
+{
+ int z, i;
+ for (z = 0; old[z].tag; z++)
+ for (i = 0; i <= old[z].nrvals; i++)
+ old[z].valptr[i] += new[z].valptr[i];
+
+}
diff --git a/utils/nfsstat/nfsstat.man b/utils/nfsstat/nfsstat.man
index cb5f89f..461b2c0 100644
--- a/utils/nfsstat/nfsstat.man
+++ b/utils/nfsstat/nfsstat.man
@@ -91,7 +91,7 @@ output
.I file
are treated as zeroes.
.TP
-.B \-Z, \-\-sleep
+.B \-Z[interval], \-\-sleep=[interval]
Instead of printing current statistics and immediately exiting,
.B nfsstat
takes a snapshot of the current statistics and pauses until it receives
@@ -100,6 +100,10 @@ takes a snapshot of the current statistics and pauses until it receives
.BR Ctrl-C ),
at which point it takes another snapshot and displays the difference
between the two.
+If \fIinterval\fR is specified,
+.B nfsstat
+will print the number of \fBNFS\fR calls made since the previous report.
+Stats will be printed repeatedly every \fIinterval\fR seconds.
.\" --------------------- EXAMPLES -------------------------------
.SH EXAMPLES
.TP
--
1.6.0.4.761.g47577
--
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