Hi,
The following patch fixes two problems in loop variables of gtod_latency
test case
1) The loop variable 'k' could overflow on 32 bit systems, leading to a
SEGV.
2) The inner loop was not of constant duration. This meant the frequency
of calls to usleep() depend on the number of total iterations. It is desirable
to make this frequency a constant.
Thanks,
Sripathi.
Changelog:
* Fix loop variables in gtod_latency test case.
Signed-off-by: Sripathi Kodi <[EMAIL PROTECTED]>
Acked-by: Darren Hart <[EMAIL PROTECTED]>
diff -uprN ltp_cvs_4dec.org/testcases/realtime/func/gtod_latency/gtod_latency.c
ltp_cvs_4dec/testcases/realtime/func/gtod_latency/gtod_latency.c
--- ltp_cvs_4dec.org/testcases/realtime/func/gtod_latency/gtod_latency.c
2008-12-04 11:24:49.000000000 +0530
+++ ltp_cvs_4dec/testcases/realtime/func/gtod_latency/gtod_latency.c
2008-12-04 11:25:06.000000000 +0530
@@ -263,9 +263,9 @@ int main(int argc, char *argv[])
}
/* This loop runs for a long time, hence can cause soft lockups.
Calling sleep periodically avoids this. */
- for (i=0; i<1000; i++) {
- for (j=0; j < ITERATIONS/1000; j++) {
- k = (i * ITERATIONS/1000) + j;
+ for (i=0; i<(ITERATIONS/10000); i++) {
+ for (j=0; j < 10000; j++) {
+ k = (i * 10000) + j;
clock_gettime(CLOCK_MONOTONIC,&start_data[k]);
clock_gettime(CLOCK_MONOTONIC,&stop_data[k]);
}
-------------------------------------------------------------------------
This SF.Net email is sponsored by the Moblin Your Move Developer's challenge
Build the coolest Linux based applications with Moblin SDK & win great prizes
Grand prize is a trip for two to an Open Source event anywhere in the world
http://moblin-contest.org/redirect.php?banner_id=100&url=/
_______________________________________________
Ltp-list mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/ltp-list
