Dear all,
I have one more query, when i run mtest01w on my target, it gives a message
"stopped at 731906048 bytes: errno=ENOMEM(12): Cannot allocate memory".
Should this be considered as a test case failure, If not, why?
Regards,
Shashank J Bilgi
On Tue, Jul 16, 2013 at 5:59 PM, <[email protected]> wrote:
> Hi!
> > <<<test_start>>>
> > tag=mtest01w stime=2336
> > cmdline="mtest01 -p80 -w"
> > contacts=""
> > analysis=exit
> > <<<test_output>>>
> > [ 2351.111281] rmon:L
> > mtest01 0 TINFO : Total memory already used on system = 22796
> kbytes
> > mtest01 0 TINFO : Total memory used needed to reach maximum =
> > 1750246 kbytes
> > mtest01 0 TINFO : Filling up 80% of ram which is 1727450 kbytes
> > mtest01 1 TBROK : stopped at 716177408 bytes: errno=ENOMEM(12):
> > Cannot allocate memory
> >
> >
> > * When the malloc fails the child process seems to be calling tst_exit().
> > mtest01.c
> > .....
> > .....
> > if (pid == 0) {
> > bytecount = chunksize;
> > while (1) {
> > if ((mem = malloc(chunksize)) == NULL) {
> > tst_resm(TBROK | TERRNO,
> > "stopped at %lu bytes",
> bytecount);
> > free(pid_list);
> > tst_exit();
> > }
> >
> > .....
> > .....
> >
> > * but in this case i can see the child process in the process list(ps
> -ax)
> > in sleep state.
> >
> > 333 ttyAM0 S 0:00 mtest01 -p80 -w
> > 334 ttyAM0 Z 0:14 [mtest01] <defunct>
> > 335 ttyAM0 S 0:13 mtest01 -p80 -w
> >
> > Here is my query , why tst_exit() isn't ending the child process?
>
> Using tst_exit() and any other tst interface from child is a mistake but
> tst_exit() should end the child process.
>
> However there may be other childrens still running as tst_exit() is just
> equivalent to exit() (it does flush output buffers and exits the process
> with result as return value but nothing more).
>
> So my guess is that the rest of the childrens continue to fill the
> chunks and then waits to be reaped by the parent. Which may hang the
> machine if there is not enough memory.
>
> --
> Cyril Hrubis
> [email protected]
>
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