I removed all outputs but the one streaming the piped stream, as I suspect it's
the culprit, it froze again after 1h40, smart_crossfade managed to squeeze one
more line:
`2018/08/22 12:06:31 [smart_crossfade:3] new >= old + margin, old <= medium and
new <= high.`
This time I had a socket connected before, and it's responding...
```
uptime
0d 01h 53m 51s
restart
restart called
```
but it's not doing anything
the external process is still running, hasn't crashed, doesn't complain on
stderr
If I attach strace to liq, I get:
```
sudo strace -fp 29444
strace: Process 29444 attached with 7 threads
[pid 29454] futex(0x56309c3428a0, FUTEX_WAIT_PRIVATE, 2, NULL <unfinished ...>
[pid 29449] futex(0x7f93d8000b48, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 29448] futex(0x7f93dc000b48, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 29447] restart_syscall(<... resuming interrupted poll ...> <unfinished ...>
[pid 29446] select(0, NULL, NULL, NULL, {tv_sec=0, tv_usec=21809} <unfinished
...>
[pid 29445] futex(0x56309c3428a0, FUTEX_WAIT_PRIVATE, 2, NULL <unfinished ...>
[pid 29444] futex(0x56309c3428a0, FUTEX_WAIT_PRIVATE, 2, NULL <unfinished ...>
[pid 29446] <... select resumed> ) = 0 (Timeout)
[pid 29446] select(0, NULL, NULL, NULL, {tv_sec=0, tv_usec=50000}) = 0 (Timeout)
[pid 29446] select(0, NULL, NULL, NULL, {tv_sec=0, tv_usec=50000}) = 0 (Timeout)
[pid 29446] select(0, NULL, NULL, NULL, {tv_sec=0, tv_usec=50000}) = 0 (Timeout)
[pid 29446] select(0, NULL, NULL, NULL, {tv_sec=0, tv_usec=50000}) = 0 (Timeout)
[pid 29446] select(0, NULL, NULL, NULL, {tv_sec=0, tv_usec=50000}) = 0 (Timeout)
```
If I kill the external process, liq uses 100% of CPU.
I'll try and monitor the external process next time.
I added merge_tracks and drop_metadata to try making stereotool happier, but I
don't think that's the issue ☹
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