Router A leaks memory when router B killed and restarted.

I set up a 2-node router network, with B connecting to A.

No clients.

Repeatedly killing and restarting B – giving 3 seconds after each kill and after each restart for the network to settle down.   Repeated 100 times. The same router A ran for the duration of the test.

The 'ps' program, run repeatedly on router A, indicated that it was leaking about 82 KB per kill-and-restart.  Using 'qdstat m' on A after each kill-and-restart showed the following difference between iteration 1 and iteration 100.  ( Note, this shows growth of only 44 KB per iteration. )

As far as I looked into the past (about 1 year) I saw similar behavior.

In the chart below, the first column "size" is the number of bytes in a single struct of that type.

"In-threads" means how many of each struct are currently being used.

Note that, although there are no clients, the routers will be sending some messages to each other.

type                size  in-threads   in-threads    item      byte
                           test 1      test 100     growth    growth
{{ ======================================================================}}

qd_buffer_t           536   256           2944        2688   1440768
{{ qd_message_content_t 1056   128           1216        1088   1148928}}
{{ qd_iterator_t         160   448           7488        7040   1126400}}
{{ qd_parsed_field_t      88   256           2880        2624    230912}}
{{ qdr_delivery_t        248   256           1152         896    222208}}
{{ qd_message_t          160   256           1088         832    133120}}
{{ qd_connection_t      2320    32             64          32     74240}}
{{ qdr_general_work_t     64    64            448         384     24576}}
{{ qdr_link_t            360   192            256          64     23040}}
{{ qd_bitmask_t           24   192           1088         896     21504}}
{{ qdr_connection_work_t  48    64            384         320     15360}}
{{ qdr_link_work_t        48    64            384         320     15360}}
{{ qd_link_t              96   128            256         128     12288}}
{{ qdr_link_ref_t         24    64            448         384      9216}}
{{ qd_parsed_turbo_t      64   128            256         128      8192}}
{{ qd_link_ref_t          24    64            256         192      4608}}
{{ qdr_error_t            24    64            256         192      4608}}
{{ qd_deferred_call_t     32    64            192         128      4096}}
{{ qdr_terminus_t         64   192            256          64      4096}}
{{ qdr_delivery_ref_t     24    64            128          64      1536}}

( All other structs have zero growth. (Or, in one case, less.) )