uwsgiのパラメータチューニング

Question

nginx+uwsgi+flaskのよくあるアプリケーションをGKEで動かしています。
そこでlatencyを下げるためにuwsgiのパラメータ・チューニングをしています。
しかし、logにある通りのエラーが発生します。
なんかいもデプロイをし直したりはして実際にデプロイされたコンテナ内にはいって確認していますが同じエラーのままです。

どうにも検討がつかないので、どなたか同じような事象にあったことがあるかたは、なにかきづいた点などご指摘頂けますでしょうか？

エントリーポイント

CMD ["uwsgi", "--emperor", "/code/python/uwsgi.ini"]

uwsgi.ini

[uwsgi]
chdir = /code/python
wsgi-file = wsgi.py
callable = app
master = true
processes = 1
socket = :3031
uid=1000
gid=1000
chmod-socket = 666
logto = /code/python/uwsgi.log
pidfile = /code/python/uwsgi.pid
vacuum = true
die-on-term = true

thunder-lock = true
max-requests = 6000
max-requests-delta = 300
stats = /var/run/uWSGI/projectname.stats.sock
memory-report = true

$ cat uwsgi.log
*** Starting uWSGI 2.0.19.1 (64bit) on [Wed Apr  7 10:22:39 2021] ***
compiled with version: 8.3.0 on 07 April 2021 09:19:30
os: Linux-4.19.112+ #1 SMP Sat Oct 10 13:45:37 PDT 2020
nodename: app-node-6ccdf4b4c9-sn8df
machine: x86_64
clock source: unix
pcre jit disabled
detected number of CPU cores: 1
current working directory: /code
writing pidfile to /code/python/uwsgi.pid
detected binary path: /usr/local/bin/uwsgi
chdir() to /code/python
your memory page size is 4096 bytes
detected max file descriptor number: 1048576
lock engine: pthread robust mutexes
thunder lock: enabled
uwsgi socket 0 bound to TCP address :3031 fd 3
Python version: 3.7.10 (default, Mar 12 2021, 20:10:57)  [GCC 8.3.0]
*** Python threads support is disabled. You can enable it with --enable-threads ***
Python main interpreter initialized at 0x563bf6a90a60
your server socket listen backlog is limited to 100 connections
your mercy for graceful operations on workers is 60 seconds
mapped 145840 bytes (142 KB) for 1 cores
*** Operational MODE: single process ***
INFO:googlecloudprofiler:Google Cloud Profiler Python agent version: 3.0.3
WSGI app 0 (mountpoint='') ready in 3 seconds on interpreter 0x563bf6a90a60 pid: 6 (default app)
*** uWSGI is running in multiple interpreter mode ***
spawned uWSGI master process (pid: 6)
DEBUG:googlecloudprofiler.client:Profiler has started
spawned uWSGI worker 1 (pid: 11, cores: 1)
bind(): No such file or directory [core/socket.c line 230]
...brutally killing workers...
unlink(): No such file or directory [core/uwsgi.c line 1675]
Wed Apr  7 10:22:42 2021 - uWSGI worker 1 screams: UAAAAAAH my master disconnected: i will kill myself !!!
*** Starting uWSGI 2.0.19.1 (64bit) on [Wed Apr  7 10:22:45 2021] ***
compiled with version: 8.3.0 on 07 April 2021 09:19:30
os: Linux-4.19.112+ #1 SMP Sat Oct 10 13:45:37 PDT 2020
nodename: app-node-6ccdf4b4c9-sn8df
machine: x86_64
clock source: unix
pcre jit disabled
detected number of CPU cores: 1
current working directory: /code
writing pidfile to /code/python/uwsgi.pid
detected binary path: /usr/local/bin/uwsgi
chdir() to /code/python
your memory page size is 4096 bytes
detected max file descriptor number: 1048576
lock engine: pthread robust mutexes
thunder lock: enabled
probably another instance of uWSGI is running on the same address (:3031).
bind(): Address already in use [core/socket.c line 769]
unlink(): No such file or directory [core/uwsgi.c line 1675]
*** Starting uWSGI 2.0.19.1 (64bit) on [Wed Apr  7 10:22:52 2021] ***
compiled with version: 8.3.0 on 07 April 2021 09:19:30
os: Linux-4.19.112+ #1 SMP Sat Oct 10 13:45:37 PDT 2020
nodename: app-node-6ccdf4b4c9-sn8df
machine: x86_64
clock source: unix
pcre jit disabled
detected number of CPU cores: 1
current working directory: /code
writing pidfile to /code/python/uwsgi.pid
detected binary path: /usr/local/bin/uwsgi
chdir() to /code/python
your memory page size is 4096 bytes
detected max file descriptor number: 1048576
lock engine: pthread robust mutexes
thunder lock: enabled
probably another instance of uWSGI is running on the same address (:3031).
bind(): Address already in use [core/socket.c line 769]
unlink(): No such file or directory [core/uwsgi.c line 1675]
*** Starting uWSGI 2.0.19.1 (64bit) on [Wed Apr  7 10:22:59 2021] ***
compiled with version: 8.3.0 on 07 April 2021 09:19:30
os: Linux-4.19.112+ #1 SMP Sat Oct 10 13:45:37 PDT 2020
nodename: app-node-6ccdf4b4c9-sn8df
machine: x86_64
clock source: unix
pcre jit disabled
detected number of CPU cores: 1
current working directory: /code
writing pidfile to /code/python/uwsgi.pid
detected binary path: /usr/local/bin/uwsgi
chdir() to /code/python
your memory page size is 4096 bytes
detected max file descriptor number: 1048576
lock engine: pthread robust mutexes
thunder lock: enabled
probably another instance of uWSGI is running on the same address (:3031).
bind(): Address already in use [core/socket.c line 769]
unlink(): No such file or directory [core/uwsgi.c line 1675]
*** Starting uWSGI 2.0.19.1 (64bit) on [Wed Apr  7 10:23:08 2021] ***
compiled with version: 8.3.0 on 07 April 2021 09:19:30
os: Linux-4.19.112+ #1 SMP Sat Oct 10 13:45:37 PDT 2020
nodename: app-node-6ccdf4b4c9-sn8df
machine: x86_64
clock source: unix
pcre jit disabled
detected number of CPU cores: 1
current working directory: /code
writing pidfile to /code/python/uwsgi.pid
detected binary path: /usr/local/bin/uwsgi
chdir() to /code/python
your memory page size is 4096 bytes
detected max file descriptor number: 1048576
lock engine: pthread robust mutexes
thunder lock: enabled
probably another instance of uWSGI is running on the same address (:3031).
bind(): Address already in use [core/socket.c line 769]
unlink(): No such file or directory [core/uwsgi.c line 1675]
*** Starting uWSGI 2.0.19.1 (64bit) on [Wed Apr  7 10:23:18 2021] ***
compiled with version: 8.3.0 on 07 April 2021 09:19:30
os: Linux-4.19.112+ #1 SMP Sat Oct 10 13:45:37 PDT 2020
nodename: app-node-6ccdf4b4c9-sn8df
machine: x86_64
clock source: unix
pcre jit disabled
detected number of CPU cores: 1
current working directory: /code
writing pidfile to /code/python/uwsgi.pid
detected binary path: /usr/local/bin/uwsgi
chdir() to /code/python
your memory page size is 4096 bytes
detected max file descriptor number: 1048576
lock engine: pthread robust mutexes
thunder lock: enabled
probably another instance of uWSGI is running on the same address (:3031).
bind(): Address already in use [core/socket.c line 769]
unlink(): No such file or directory [core/uwsgi.c line 1675]
*** Starting uWSGI 2.0.19.1 (64bit) on [Wed Apr  7 10:23:28 2021] ***
compiled with version: 8.3.0 on 07 April 2021 09:19:30
os: Linux-4.19.112+ #1 SMP Sat Oct 10 13:45:37 PDT 2020
nodename: app-node-6ccdf4b4c9-sn8df
machine: x86_64
clock source: unix
pcre jit disabled
detected number of CPU cores: 1
current working directory: /code
writing pidfile to /code/python/uwsgi.pid
detected binary path: /usr/local/bin/uwsgi
chdir() to /code/python
your memory page size is 4096 bytes
detected max file descriptor number: 1048576
lock engine: pthread robust mutexes
thunder lock: enabled
probably another instance of uWSGI is running on the same address (:3031).
bind(): Address already in use [core/socket.c line 769]
unlink(): No such file or directory [core/uwsgi.c line 1675]
*** Starting uWSGI 2.0.19.1 (64bit) on [Wed Apr  7 10:23:38 2021] ***
compiled with version: 8.3.0 on 07 April 2021 09:19:30
os: Linux-4.19.112+ #1 SMP Sat Oct 10 13:45:37 PDT 2020
nodename: app-node-6ccdf4b4c9-sn8df
machine: x86_64
clock source: unix
pcre jit disabled
detected number of CPU cores: 1
current working directory: /code
writing pidfile to /code/python/uwsgi.pid
detected binary path: /usr/local/bin/uwsgi
chdir() to /code/python
your memory page size is 4096 bytes
detected max file descriptor number: 1048576
lock engine: pthread robust mutexes
thunder lock: enabled
probably another instance of uWSGI is running on the same address (:3031).
bind(): Address already in use [core/socket.c line 769]
unlink(): No such file or directory [core/uwsgi.c line 1675]
*** Starting uWSGI 2.0.19.1 (64bit) on [Wed Apr  7 10:23:50 2021] ***
compiled with version: 8.3.0 on 07 April 2021 09:19:30
os: Linux-4.19.112+ #1 SMP Sat Oct 10 13:45:37 PDT 2020
nodename: app-node-6ccdf4b4c9-sn8df
machine: x86_64
clock source: unix
pcre jit disabled
detected number of CPU cores: 1
current working directory: /code
writing pidfile to /code/python/uwsgi.pid
detected binary path: /usr/local/bin/uwsgi
chdir() to /code/python
your memory page size is 4096 bytes
detected max file descriptor number: 1048576
lock engine: pthread robust mutexes
thunder lock: enabled
probably another instance of uWSGI is running on the same address (:3031).
bind(): Address already in use [core/socket.c line 769]
unlink(): No such file or directory [core/uwsgi.c line 1675]
*** Starting uWSGI 2.0.19.1 (64bit) on [Wed Apr  7 10:24:04 2021] ***
compiled with version: 8.3.0 on 07 April 2021 09:19:30
os: Linux-4.19.112+ #1 SMP Sat Oct 10 13:45:37 PDT 2020
nodename: app-node-6ccdf4b4c9-sn8df
machine: x86_64
clock source: unix
pcre jit disabled
detected number of CPU cores: 1
current working directory: /code
writing pidfile to /code/python/uwsgi.pid
detected binary path: /usr/local/bin/uwsgi
chdir() to /code/python
your memory page size is 4096 bytes
detected max file descriptor number: 1048576
lock engine: pthread robust mutexes
thunder lock: enabled
probably another instance of uWSGI is running on the same address (:3031).
bind(): Address already in use [core/socket.c line 769]
unlink(): No such file or directory [core/uwsgi.c line 1675]