[Libguestfs] [PATCH libnbd 4/6] tests/synch-parallel: Show throughput in MiB/s
Using Mbytes/s is less useful, people expect values in MiB.
Example output:
$ ./synch-parallel.sh
...
bytes sent: 12686721024 (1209.9 MiB/s)
bytes received: 12734693376 (1214.47 MiB/s)
I/O requests: 96975 (9697.5 IOPS)
Signed-off-by: Nir Soffer <nsoffer(a)redhat.com>
---
tests/synch-parallel.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/tests/synch-parallel.c b/tests/synch-parallel.c
index cecfeae..423e1f0 100644
--- a/tests/synch-parallel.c
+++ b/tests/synch-parallel.c
@@ -36,40 +36,42 @@
#include <sys/time.h>
#include <pthread.h>
#include <libnbd.h>
#include "byte-swapping.h"
/* We keep a shadow of the RAM disk so we can check integrity of the data. */
static char *ramdisk;
/* This is also defined in synch-parallel.sh and checked here. */
#define EXPORTSIZE (8*1024*1024)
/* How long (seconds) that the test will run for. */
#define RUN_TIME 10
/* Number of threads. */
#define NR_THREADS 8
+#define MiB (1024*1024)
+
#define MICROSECONDS 1000000
/* Unix socket. */
static const char *unixsocket;
struct thread_status {
size_t i; /* Thread index, 0 .. NR_THREADS-1 */
uint64_t offset, length; /* Area assigned to this thread. */
int status; /* Return status. */
unsigned requests; /* Total number of requests made. */
uint64_t bytes_sent, bytes_received; /* Bytes sent and received by thread. */
};
static void *start_thread (void *arg);
static inline int64_t
microtime (void)
{
struct timeval tv;
@@ -139,44 +141,44 @@ main (int argc, char *argv[])
fprintf (stderr, "thread %zu failed with status %d\n",
i, status[i].status);
errors++;
}
requests += status[i].requests;
bytes_sent += status[i].bytes_sent;
bytes_received += status[i].bytes_received;
}
free (ramdisk);
/* Print some stats. */
printf ("TLS: %s\n",
#ifdef TLS
"enabled"
#else
"disabled"
#endif
);
- printf ("bytes sent: %" PRIu64 " (%g Mbytes/s)\n",
- bytes_sent, (double) bytes_sent / RUN_TIME / 1000000);
- printf ("bytes received: %" PRIu64 " (%g Mbytes/s)\n",
- bytes_received, (double) bytes_received / RUN_TIME / 1000000);
+ printf ("bytes sent: %" PRIu64 " (%g MiB/s)\n",
+ bytes_sent, (double) bytes_sent / RUN_TIME / MiB);
+ printf ("bytes received: %" PRIu64 " (%g MiB/s)\n",
+ bytes_received, (double) bytes_received / RUN_TIME / MiB);
printf ("I/O requests: %u (%g IOPS)\n",
requests, (double) requests / RUN_TIME);
exit (errors == 0 ? EXIT_SUCCESS : EXIT_FAILURE);
}
#define BUFFER_SIZE 16384
static void *
start_thread (void *arg)
{
struct thread_status *status = arg;
struct nbd_handle *nbd;
char *buf;
int cmd;
uint64_t offset;
int64_t start_usec, stop_usec, now_usec;
buf = calloc (BUFFER_SIZE, 1);
--
2.31.1