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| author | Fengguang Wu <fengguang.wu@intel.com> | 2013-10-04 11:05:35 +0800 |
|---|---|---|
| committer | Fengguang Wu <fengguang.wu@intel.com> | 2013-10-04 11:05:35 +0800 |
| commit | 9b74962fc51b9f699cf47fd01cf0d090e54cba33 (patch) | |
| tree | 6d0e02aee5b7c1c847a9ea7a7ed4e8226dd75c33 | |
| parent | 141fdf406e4255b09664285e1e89e7b1a875d891 (diff) | |
| download | vm-scalability-9b74962fc51b9f699cf47fd01cf0d090e54cba33.tar.gz | |
usemem: fix disordered output due to race conditions
9163121194 bytes / 511443180 usecs = 17496 KB/s
9163121194 bytes / 535441190 usecs = 16712 KB/s
9163121194 bytes9167839786 bytes / 300795153 usecs = 29764 KB/s
9163121194 bytes / 301242067 usecs = 29704 KB/s
9167839786 bytes / 305479517 usecs = 29307 KB/s
9163121194 bytes / 303736171 usecs = 29460 KB/s
9167839786 bytes / 305661581 usecs = 29290 KB/s
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
| -rw-r--r-- | usemem.c | 9 |
1 files changed, 7 insertions, 2 deletions
@@ -555,13 +555,18 @@ long do_units(unsigned long bytes) if (unit_bytes) { struct timeval stop; + char buf[1024]; + size_t len; gettimeofday(&stop, NULL); delta_us = (stop.tv_sec - start_time.tv_sec) * 1000000 + (stop.tv_usec - start_time.tv_usec); throughput = ((unit_bytes * 1000000ULL) >> 10) / delta_us; - printf("%lu bytes / %lu usecs = %lu KB/s\n", - unit_bytes, delta_us, throughput); + len = snprintf(buf, sizeof(buf), + "%lu bytes / %lu usecs = %lu KB/s\n", + unit_bytes, delta_us, throughput); + fflush(stdout); + write(1, buf, len); } if (opt_detach && up(sem_id)) |