Semaphore issue

[Julien ÉLIE]

Hi all,

> % ./buffindexed.t
> cant create semaphore using ov-tmp/buffer: No space left on device
> failed to create semaphore for ov-tmp/buffer
> buffindexed: ovinitdisks: cant create shmem for ov-tmp/buffer len 16384: No space left on device
> Opening the overview database failed, cannot continue

I believe there is a latent problem with our use of semaphores.
I experienced again an exhaustion of available semaphores.



iulius at gcc10:~/autobuild/inn/tests$ ipcs -s

------ Semaphore Arrays --------
key        semid      owner      perms      nsems




iulius at gcc10:~/autobuild/inn/tests$ make
./runtests TESTS
[...]
All tests successful, 88 tests skipped.
Files=54,  Tests=3490,  13.74 seconds (1.41 usr + 1.76 sys = 3.17 CPU)




iulius at gcc10:~/autobuild/inn/tests$ ipcs -s

------ Semaphore Arrays --------
key        semid      owner      perms      nsems
0x00210cbc 290553863  iulius    777        2
0x00210cd3 290586632  iulius    777        2





iulius at gcc10:~/autobuild/inn/tests$ make
./runtests TESTS
[...]
All tests successful, 88 tests skipped.
Files=54,  Tests=3490,  13.71 seconds (1.36 usr + 1.75 sys = 3.10 CPU)




iulius at gcc10:~/autobuild/inn/tests$ ipcs -s

------ Semaphore Arrays --------
key        semid      owner      perms      nsems
0x00210cbc 290553863  iulius    777        2
0x00210cd3 290586632  iulius    777        2
0x00210cba 290619401  iulius    777        2





iulius at gcc10:~/autobuild/inn/tests$ make
./runtests TESTS
[...]
All tests successful, 88 tests skipped.
Files=54,  Tests=3490,  13.72 seconds (1.37 usr + 1.74 sys = 3.11 CPU)





iulius at gcc10:~/autobuild/inn/tests$ ipcs -s

------ Semaphore Arrays --------
key        semid      owner      perms      nsems
0x00210cbc 290553863  iulius    777        2
0x00210cd3 290586632  iulius    777        2
0x00210cba 290619401  iulius    777        2



And it seems to remain at 3.


Then I rebuild INN, and run again the test suite.


iulius at gcc10:~/autobuild/inn/tests$ ipcs -s

------ Semaphore Arrays --------
key        semid      owner      perms      nsems
0x00210cba 290652167  iulius    777        2
0x00210cd3 290684936  iulius    777        2
0x00210cbc 290717705  iulius    777        2
0x00210cbd 290750474  iulius    777        2



...



Compilation with no configure flags (mere build) triggers the problem. 
(So does a compilation with configure flags.)


I suspect overview tests (or perhaps real overview).
Is there something special to look at?  Isn't there a possibility to 
automatically destroy unused semaphores?

-- 
Julien ÉLIE

« – Où vous croyez-vous ici ?
   – Où je me trouve, je sais. » (Astérix)