It looks like the code that called shm_open() is called at the lttng-consumerd daemon. But, somehow it show up in the pmap at my service process. I noticed all my processes that loads liblttng-ust would have this entry. Do you know what's the reason?
________________________________ From: lttng-dev <lttng-dev-boun...@lists.lttng.org> on behalf of Jeffrey Chen <cp...@live.com> Sent: Tuesday, September 27, 2016 11:20 AM To: lttng-dev Subject: [lttng-dev] LTTng memory map Hi LTTng: Our service has been running overnight with LTTng enabled to do some memory consumption testing. We noticed the linux pmap output would have several memory map used by LTTng, and are marked as deleted. Do you know what are them? Why are they left in the system and marked as deleted? Thanks. 00007fc3017ee000 40968 592 592 rw-s- ust-shm-consumer-58905 (deleted) 00007fc3017ee000 0 0 0 rw-s- ust-shm-consumer-58905 (deleted) 00007fc303ff0000 40968 0 0 rw-s- ust-shm-consumer-58905 (deleted) 00007fc303ff0000 0 0 0 rw-s- ust-shm-consumer-58905 (deleted) 00007fc3067f2000 40968 0 0 rw-s- ust-shm-consumer-58905 (deleted) 00007fc3067f2000 0 0 0 rw-s- ust-shm-consumer-58905 (deleted) 00007fc308ff4000 40968 0 0 rw-s- ust-shm-consumer-58905 (deleted) 00007fc308ff4000 0 0 0 rw-s- ust-shm-consumer-58905 (deleted) 00007fc30b7f6000 40968 0 0 rw-s- ust-shm-consumer-58905 (deleted) 00007fc30b7f6000 0 0 0 rw-s- ust-shm-consumer-58905 (deleted) 00007fc30dff8000 40968 524 524 rw-s- ust-shm-consumer-58905 (deleted) 00007fc30dff8000 0 0 0 rw-s- ust-shm-consumer-58905 (deleted) 00007fc3107fa000 40968 0 0 rw-s- ust-shm-consumer-58905 (deleted) 00007fc3107fa000 0 0 0 rw-s- ust-shm-consumer-58905 (deleted) 00007fc312ffc000 40968 244 244 rw-s- ust-shm-consumer-58905 (deleted) 00007fc312ffc000 0 0 0 rw-s- ust-shm-consumer-58905 (deleted) 00007fc3157fe000 40968 396 396 rw-s- ust-shm-consumer-58905 (deleted) 00007fc3157fe000 0 0 0 rw-s- ust-shm-consumer-58905 (deleted)
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