Ozzyboshi left a comment (kamailio/kamailio#4503)
I generated some calls then I stopped, this is what I god
```
# ngcp-kamcmd proxy tm.list | grep PUB | wc -l
48
# ngcp-kamcmd proxy tm.list | grep PUB | wc -l
26
# ngcp-kamcmd proxy tm.list | grep PUB | wc -l
12
# ngcp-kamcmd proxy tm.list | grep PUB | wc -l
8
# ngcp-kamcmd proxy tm.list | grep PUB | wc -l
2
# ngcp-kamcmd proxy tm.list | grep PUB | wc -l
0
```
So for me there are no transactions in memory and the memory should be freed,
However if I keep banging kamailio for let's say 15 minutes, with the same
call, and run thounsands of calls , then stop I get this
```
# ngcp-kamcmd proxy tm.list
ERROR: reply too big
```
So, according to this, in some heavy traffic situations, it seems the
transactions are not freed.
After that I run ngcp-kamcmd proxy tm.clean and the whole mem leak disappeared.
The whole process is summarized here
<img width="661" height="288" alt="Image"
src="https://github.com/user-attachments/assets/6da97b55-f5b2-4728-a77d-8669b078c5c3";
/>
This graph shows
15.52. Start spawning thousand of calls
16.07. Stop spawning calls (the ongoing calls should last 2 or 3 minutes)
16.12. Calls should be terminated, no more dialogs or transactions should be
open but still we have SHM at about 300MB, this is a plateau and for me it was
a memory leak. If i run kamcmd proxy tm.list I have a "too big reply", meaning
that a lot of transactions are still open?
16.27. I run tm clean, shm usage drops immediately to almost zero
So, probably I was wrong, kamailio is not really leaking, it's just keeping
transactions in memory for some reason.
Is there a way to increase memory so that kamcmd will reply with some data
instead of giving me the error "too big?"
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