[dpdk-dev] [PATCH] examples/ioat: fix stats print

[dpdk-dev] [PATCH] examples/ioat: fix stats print

[Kevin Laatz]

Currently some of the status string at the top of the stats output is being
cut off. To fix this, the status string array size has been increased.

Bugzilla ID: 536
Fixes: 632bcd9b5d4f ("examples/ioat: print statistics")

Signed-off-by: Kevin Laatz <kevin.laatz@intel.com>
---
 examples/ioat/ioatfwd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/examples/ioat/ioatfwd.c b/examples/ioat/ioatfwd.c
index 43a19843ee..8a8c81edfb 100644
--- a/examples/ioat/ioatfwd.c
+++ b/examples/ioat/ioatfwd.c
@@ -168,7 +168,7 @@ print_stats(char *prgname)
 	struct rte_rawdev_xstats_name *names_xstats;
 	uint64_t *xstats;
 	unsigned int *ids_xstats, nb_xstats;
-	char status_string[120]; /* to print at the top of the output */
+	char status_string[140]; /* to print at the top of the output */
 	int status_strlen;
 	int ret;
 
-- 
2.25.1

Re: [dpdk-dev] [PATCH] examples/ioat: fix stats print

[Bruce Richardson]

On Thu, Sep 17, 2020 at 12:02:21PM +0100, Kevin Laatz wrote:
> Currently some of the status string at the top of the stats output is being
> cut off. To fix this, the status string array size has been increased.
> 
> Bugzilla ID: 536
> Fixes: 632bcd9b5d4f ("examples/ioat: print statistics")
> 
> Signed-off-by: Kevin Laatz <kevin.laatz@intel.com>
> ---
>  examples/ioat/ioatfwd.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/examples/ioat/ioatfwd.c b/examples/ioat/ioatfwd.c
> index 43a19843ee..8a8c81edfb 100644
> --- a/examples/ioat/ioatfwd.c
> +++ b/examples/ioat/ioatfwd.c
> @@ -168,7 +168,7 @@ print_stats(char *prgname)
>  	struct rte_rawdev_xstats_name *names_xstats;
>  	uint64_t *xstats;
>  	unsigned int *ids_xstats, nb_xstats;
> -	char status_string[120]; /* to print at the top of the output */
> +	char status_string[140]; /* to print at the top of the output */
>  	int status_strlen;
>  	int ret;
>
This seems a rather small increment - normally if a string is too small I'd
bump it up by a serious amount. 255 might be a good value here.

Also, to avoid the display looking strange in case of future truncation
(which is not very likely with a size of 255 if you increment to that), the
final '\n' should be included in the printf rather than in the string
to be printed.

Regards,
/Bruce

[dpdk-dev] [PATCH v2] examples/ioat: fix stats print

[Kevin Laatz]

Currently some of the status string at the top of the stats output is being
cut off. To fix this, the status string array size has been increased.
In addition to this, the "\n" has been moved to the printf, rather than
having it in the last string, in case of future formatting issues due to
truncation.

Bugzilla ID: 536
Fixes: 632bcd9b5d4f ("examples/ioat: print statistics")

Signed-off-by: Kevin Laatz <kevin.laatz@intel.com>

---
v2:
  - Increased string array by larger value - ie. up to 255.
  - Moved the "\n" to avoid future formatting issues from truncation.
---
 examples/ioat/ioatfwd.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/examples/ioat/ioatfwd.c b/examples/ioat/ioatfwd.c
index 43a19843ee..4e971dc054 100644
--- a/examples/ioat/ioatfwd.c
+++ b/examples/ioat/ioatfwd.c
@@ -168,7 +168,7 @@ print_stats(char *prgname)
 	struct rte_rawdev_xstats_name *names_xstats;
 	uint64_t *xstats;
 	unsigned int *ids_xstats, nb_xstats;
-	char status_string[120]; /* to print at the top of the output */
+	char status_string[255]; /* to print at the top of the output */
 	int status_strlen;
 	int ret;
 
@@ -194,7 +194,7 @@ print_stats(char *prgname)
 		"Rx Queues = %d, ", nb_queues);
 	status_strlen += snprintf(status_string + status_strlen,
 		sizeof(status_string) - status_strlen,
-		"Ring Size = %d\n", ring_size);
+		"Ring Size = %d", ring_size);
 
 	/* Allocate memory for xstats names and values */
 	ret = rte_rawdev_xstats_names_get(
@@ -251,7 +251,7 @@ print_stats(char *prgname)
 
 		memset(&delta_ts, 0, sizeof(struct total_statistics));
 
-		printf("%s", status_string);
+		printf("%s\n", status_string);
 
 		for (i = 0; i < cfg.nb_ports; i++) {
 			port_id = cfg.ports[i].rxtx_port;
-- 
2.25.1

Re: [dpdk-dev] [PATCH v2] examples/ioat: fix stats print

[Bruce Richardson]

On Thu, Sep 17, 2020 at 02:07:40PM +0100, Kevin Laatz wrote:
> Currently some of the status string at the top of the stats output is being
> cut off. To fix this, the status string array size has been increased.
> In addition to this, the "\n" has been moved to the printf, rather than
> having it in the last string, in case of future formatting issues due to
> truncation.
> 
> Bugzilla ID: 536
> Fixes: 632bcd9b5d4f ("examples/ioat: print statistics")
> 
> Signed-off-by: Kevin Laatz <kevin.laatz@intel.com>
> 
Acked-by: Bruce Richardson <bruce.richardson@intel.com>

Re: [dpdk-dev] [PATCH v2] examples/ioat: fix stats print

[Thomas Monjalon]

17/09/2020 15:21, Bruce Richardson:
> On Thu, Sep 17, 2020 at 02:07:40PM +0100, Kevin Laatz wrote:
> > Currently some of the status string at the top of the stats output is being
> > cut off. To fix this, the status string array size has been increased.
> > In addition to this, the "\n" has been moved to the printf, rather than
> > having it in the last string, in case of future formatting issues due to
> > truncation.
> > 
> > Bugzilla ID: 536
> > Fixes: 632bcd9b5d4f ("examples/ioat: print statistics")

+Cc: stable@dpdk.org

> > Signed-off-by: Kevin Laatz <kevin.laatz@intel.com>
> > 
> Acked-by: Bruce Richardson <bruce.richardson@intel.com>

Applied, thanks