dark0707
/
px4-firmware
forked from Archive/PX4-Autopilot
1
0
Fork 0
Code Pull Requests Activity

Added performance counter for SD log performance of write() call

This commit is contained in:
Lorenz Meier 2014-11-23 19:22:55 +01:00
parent 8ff4da67d5
commit 2f271888d2
1 changed files with 7 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
src/modules/sdlog2/sdlog2.c
View File

@ -496,6 +496,8 @@ static void *logwriter_thread(void *arg)
/* set name */
prctl(PR_SET_NAME, "sdlog2_writer", 0);
perf_counter_t perf_write = perf_alloc(PC_ELAPSED, "sd write");
int log_fd = open_log_file();
if (log_fd < 0) {
@ -553,7 +555,9 @@ static void *logwriter_thread(void *arg)
n = available;
}
perf_begin(perf_write);
n = write(log_fd, read_ptr, n);
perf_end(perf_write);
should_wait = (n == available) && !is_part;
@ -586,6 +590,9 @@ static void *logwriter_thread(void *arg)
fsync(log_fd);
close(log_fd);
/* free performance counter */
perf_free(perf_write);
return NULL;
}