[Asterisk-Dev] Suspected memory leak in 1.0.9

[Craig Guy]

Hi,

I am experiencing some symptoms on my asterisk servers leading me to think 
there could be a memory leak in 1.0.9.  Over a period of 2-3 days Asterisk 
ends up being allocated in excess of 1Gb memory.  A restart of the asterisk 
service releases all of this memory every time.

Are there any things I can do to try and track down the source of the leak? 
These are production systems taking inbound calls only on digium PRI cards. 
The amount of memory in use over time seems to be related to call volume. 
If there is a better or standard way to report this please let me know.

I am running with astmm options compiled and did manage to track down a 
memory leak in app_ldap which has now been fixed but my memory symptoms 
continue.  Typical output from the top command looks like below:

21184 asterisk  16   0  913m 254m 2864 S  0.0 50.7   0:00.39 asterisk
21196 asterisk  16   0  913m 254m 2864 S  0.0 50.7   0:00.20 asterisk
21198 asterisk  17   0  913m 254m 2864 S  0.0 50.7   0:00.00 asterisk
21199 asterisk  20   0  913m 254m 2864 S  0.0 50.7   0:00.00 asterisk
21200 asterisk  15   0  913m 254m 2864 S  0.0 50.7   0:19.63 asterisk
21203 asterisk  20   0  913m 254m 2864 S  0.0 50.7   0:00.00 asterisk
21204 asterisk  16   0  913m 254m 2864 S  0.0 50.7   0:00.00 asterisk
21205 asterisk  20   0  913m 254m 2864 S  0.0 50.7   0:00.00 asterisk
21206 asterisk  15   0  913m 254m 2864 S  0.0 50.7   1:22.75 asterisk
21208 asterisk  16   0  913m 254m 2864 S  0.0 50.7   0:00.00 asterisk
21209 asterisk  16   0  913m 254m 2864 S  0.0 50.7   0:00.00 asterisk
21210 asterisk  16   0  913m 254m 2864 S  0.0 50.7   0:00.00 asterisk
21211 asterisk  20   0  913m 254m 2864 S  0.0 50.7   0:00.00 asterisk
21212 asterisk  16   0  913m 254m 2864 S  0.0 50.7   0:00.00 asterisk
21213 asterisk  16   0  913m 254m 2864 S  0.0 50.7   0:01.67 asterisk
21214 asterisk  16   0  913m 254m 2864 S  0.0 50.7   0:00.75 asterisk
21215 asterisk  16   0  913m 254m 2864 S  0.0 50.7   0:00.30 asterisk
32076 asterisk  15   0  913m 254m 2864 S  0.0 50.7   0:01.72 asterisk

Typical output from asterisk cli 'show memory summary' looks like:

        84 bytes in     1 allocations in file 'enum.c'
        28 bytes in     1 allocations in file 'translate.c'
       652 bytes in     1 allocations in file 'src/gsm_create.c'
         8 bytes in     1 allocations in file 'res_agi.c'
      1088 bytes in     1 allocations in file 'app_queue.c'
     32120 bytes in     1 allocations in file 'codec_gsm.c'
        20 bytes in     1 allocations in file 'cli.c'
       752 bytes in     2 allocations in file 'res_crypto.c'
      4656 bytes in     4 allocations in file 'chan_sip.c'
       244 bytes in     1 allocations in file 'iax2-provision.c'
         8 bytes in     1 allocations in file 'asterisk.c'
       264 bytes in     1 allocations in file 'format_gsm.c'
         1 bytes in     1 allocations in file 'res_features.c'
      1320 bytes in     4 allocations in file 'cdr.c'
       360 bytes in    10 allocations in file 'sched.c'
       636 bytes in     1 allocations in file 'res_musiconhold.c'
     20592 bytes in    16 allocations in file 'io.c'
       720 bytes in     1 allocations in file 'dsp.c'
     85291 bytes in    25 allocations in file 'chan_zap.c'
       241 bytes in    11 allocations in file 'config.c'
      4220 bytes in     5 allocations in file 'app_voicemail.c'
      8012 bytes in    12 allocations in file 'channel.c'
      2416 bytes in     8 allocations in file 'chan_iax2.c'
       744 bytes in    31 allocations in file 'manager.c'
      2856 bytes in    14 allocations in file 'file.c'
     32256 bytes in   112 allocations in file 'loader.c'
     17937 bytes in   404 allocations in file 'logger.c'
     97552 bytes in   871 allocations in file 'frame.c'
       355 bytes in    42 allocations in file 'chanvars.c'
     11527 bytes in   691 allocations in file 'res_indications.c'
      2169 bytes in    99 allocations in file 'pbx_config.c'
     34408 bytes in   240 allocations in file 'pbx.c'
363537 bytes allocated 2614 units total

Craig