Coredumps and crash.

[9a7aof]

Hi!

PhantomSDR+ uptime 4 days:

root@Siemens:/home/websdr# service websdr status
● websdr.service - PhantomSDRPlus WebSDR
    Loaded: loaded (/etc/systemd/system/websdr.service; enabled; preset: enabled)
    Active: active (running) since Sat 2025-07-12 07:46:18 CEST; 4 days ago
  Main PID: 636 (start-websdr.sh)
      Tasks: 15 (limit: 9253)
    Memory: 263.0M
        CPU: 1w 3h 39min 1.151s
    CGroup: /system.slice/websdr.service
            ├─636 /bin/bash /home/websdr/PhantomSDR-Plus/start-websdr.sh
            ├─694 rx888_stream/target/release/rx888_stream -f ./rx888_stream/SDDC_FX3.img -s 44000000 -g 30 -m high -a 13 -d --pga -o -
            └─695 build/spectrumserver --config config-rx888mk2.toml

root@Siemens
      .:++++ooooosssoo:.      ------------
    .+o++::.      `.:oos+.    OS: LMDE 6 (faye) x86_64
  :oo:.`            -+oo:    Host: LIFEBOOK S752 10601581625
 `+o/`    .::::::-.    .++-`  Kernel: 6.1.0-37-amd64
`/s/    .yyyyyyyyyyo:  +o-`  Uptime: 4 days, 2 mins
`so    .ss      ohyo` :s-:  Packages: 3404 (dpkg)
`s/    .ss  h  m  myy/ /s``  Shell: bash 5.2.15
`s:    `oo  s  m  Myy+-o:`    Resolution: 1366x768
`oo      :+sdoohyoydyso/.      CPU: Intel i5-3320M (4) @ 3.300GHz
 .      .:////////++:        GPU: Intel 3rd Gen Core processor Graphics Controller
 `/++        -:::::-          Memory: 489MiB / 7800MiB

Best Regards,
Darko, 9a7aof

[9a7aof]

root@Siemens:/home/websdr# service websdr status
● websdr.service - PhantomSDRPlus WebSDR
     Loaded: loaded (/etc/systemd/system/websdr.service; enabled; preset: enabled)
     Active: active (running) since Fri 2025-07-18 07:18:34 CEST; 1 week 4 days ago
   Main PID: 629 (start-websdr.sh)
      Tasks: 15 (limit: 9253)
     Memory: 281.5M
        CPU: 3w 1d 16h 45min 27.575s
     CGroup: /system.slice/websdr.service
             ├─629 /bin/bash /home/websdr/PhantomSDR-Plus/start-websdr.sh
             ├─699 rx888_stream/target/release/rx888_stream -f ./rx888_stream/SDDC_FX3.img -s 44000000 -g 30 -m high -a 13 -d --pga -o -
             └─700 build/spectrumserver --config config-rx888mk2.toml

My sysctl.conf:

Code Select Expand

# Turn on Source Address Verification in all interfaces to
# prevent some spoofing attacks
net.ipv4.conf.default.rp_filter=1
net.ipv4.conf.all.rp_filter=1

# Do not accept ICMP redirects (prevent MITM attacks)
net.ipv4.conf.all.accept_redirects = 0
net.ipv6.conf.all.accept_redirects = 0

# Do not send ICMP redirects (we are not a router)
net.ipv4.conf.all.send_redirects = 0

# Do not accept IP source route packets (we are not a router)
net.ipv4.conf.all.accept_source_route = 0
net.ipv6.conf.all.accept_source_route = 0

#-----------------------------
# from Bas, ON5HB
kernel.perf_cpu_time_max_percent=0
net.core.netdev_max_backlog=8192
net.ipv4.tcp_synack_retries=2
net.ipv4.tcp_keepalive_time=300
net.ipv4.tcp_keepalive_probes=4
net.ipv4.tcp_orphan_retries=2
#from Bas, ON5HB
#-----------------------------
#https://www.linuxbrigade.com/reduce-time_wait-socket-connections/
# Decrease TIME_WAIT seconds
net.ipv4.tcp_fin_timeout = 30
 # Recycle and Reuse TIME_WAIT sockets faster
net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_tw_reuse = 1
#--------------------------------

This only one systemd startup script, thank Bas for your idea, this works great!

Best Regards,
Darko, 9a7aof