[LTP] hugetlb tests failure occurred

[Mitani <mi...@ry...>]

Hi,

I ran "hugeshmdt01" and "hugeshmctl01" tests.

At these tests, I set HugePages_Total:
------------</proc/meminfo>
[root@RHEL54-LTP-EM64T ltp]# cat /proc/meminfo
MemTotal:      2059632 kB
MemFree:       1392080 kB
Buffers:        204764 kB
Cached:         308092 kB
...
VmallocTotal: 34359738367 kB
VmallocUsed:      1012 kB
VmallocChunk: 34359736951 kB
HugePages_Total:     2
HugePages_Free:      2
HugePages_Rsvd:      0
Hugepagesize:     2048 kB
------------

But these tests failed:

------------<log>
hugeshmctl01    1  TBROK  :  couldn't create the shared memory segment
hugeshmctl01    2  TBROK  :  Remaining cases broken
hugeshmctl01    3  TBROK  :  Remaining cases broken
hugeshmctl01    4  TBROK  :  Remaining cases broken
hugeshmctl01    0  TINFO  :  received unexpected signal 15
hugeshmctl01    0  TINFO  :  received unexpected signal 15
hugeshmctl01    0  TINFO  :  received unexpected signal 15
hugeshmctl01    0  TINFO  :  received unexpected signal 15
hugeshmctl02    1  TBROK  :  couldn't create shared memory segment #1 in
setup()
hugeshmctl02    2  TBROK  :  Remaining cases broken
hugeshmctl02    3  TBROK  :  Remaining cases broken
hugeshmctl02    4  TBROK  :  Remaining cases broken
hugeshmctl02    1  TBROK  :  couldn't create shared memory segment #1 in
setup()
hugeshmctl02    2  TBROK  :  Remaining cases broken
hugeshmctl02    3  TBROK  :  Remaining cases broken
hugeshmctl02    4  TBROK  :  Remaining cases broken
hugeshmctl02    1  TBROK  :  couldn't create shared memory segment #1 in
setup()
hugeshmctl02    2  TBROK  :  Remaining cases broken
hugeshmctl02    3  TBROK  :  Remaining cases broken
hugeshmctl02    4  TBROK  :  Remaining cases broken
hugeshmctl01    0  TINFO  :  received unexpected signal 15
hugeshmctl01    0  TINFO  :  received unexpected signal 15
hugeshmctl01    0  TINFO  :  received unexpected signal 15
hugeshmctl03    1  TBROK  :  couldn't create shared memory segment in
setup()
hugeshmctl03    2  TBROK  :  Remaining cases broken
hugeshmctl03    3  TBROK  :  Remaining cases broken
hugeshmctl03    1  TBROK  :  couldn't create shared memory segment in
setup()
hugeshmctl03    2  TBROK  :  Remaining cases broken
hugeshmctl03    3  TBROK  :  Remaining cases broken
hugeshmctl03    1  TBROK  :  couldn't create shared memory segment in
setup()
hugeshmctl03    2  TBROK  :  Remaining cases broken
hugeshmctl03    3  TBROK  :  Remaining cases broken
------------

All these are failures of shmget() .

My systems are RHEL5.4 and RHEL4.8. Architectures are x86, x86_64, and ia64.
In all of these environments, above failures occurred.

I executed "runltp" once. But these tests are executed several times.
And shmget() system-call failed with errno=ENOMEM at last in my system.
In ".../runtest/hugetlb", test commands are as follows:

------------<hugetlb>
hugeshmctl01 hugeshmctl01 -i 5 -c 3
hugeshmctl02 hugeshmctl02 -i 5 -c 3
hugeshmctl03 hugeshmctl03 -i 5 -c 3

hugeshmdt01 hugeshmdt01 -I 5 -c10
------------

If repetition is once, these tests succeed in my system..


I'm grad if I can know a reason of these repetition ("-c" option).
And I want to know whether I can appoint this option freely if machine 
doesn't have enough memory.


Regards--

-Tomonori Mitani