[bisq-network/bisq] Bisq using up too much memory on Linux even after closing (#3918)

[Stan]

Tracing linux glibc memory_arena_new calls via


    sudo bpftrace -e 'usdt:/proc/<PID>/root/lib/x86_64-linux-gnu/libc-2.27.so:libc:memory_arena_new { printf("PID %d: created new arena at %p, size %d\n", pid, arg0, arg1); }'

is showing Bisq  malloc() calls creating 20 new arenas between startup (with emtpy data.dir) and the time the BlockParser is done.

When I started Bisq after setting

    export MALLOC_ARENA_MAX=4
    export MALLOC_MMAP_THRESHOLD_=131072

the same trace shows Bisq is does not create any new arenas during the same interval; it is using existing arenas.



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