Hello,
I'm the author of the "Resource Monitor" plugin and have had reports of users having issues with my plugin.
Apparently, in some (rare ?) cases the printer can freeze during a print (for ~1s) when my plugin is enabled. (Issue #37).
While I could not reproduce the issue with my printer, I have found something strange in the logs.
2022-04-17 03:34:23,084 - octoprint.plugins.resource_monitor - DEBUG - disk_usage(partition["mountpoint"] : sdiskusage(total=264289280, used=50511360, free=213777920, percent=19.1)
2022-04-17 03:34:23,092 - octoprint.plugins.resource_monitor - DEBUG - net_io_counters(pernic=True) : {'lo': snetio(bytes_sent=8254966181, bytes_recv=8254966181, packets_sent=1566153, packets_recv=1566153, errin=0, errout=0, dropin=0, dropout=0), 'eth0': snetio(bytes_sent=0, bytes_recv=0, packets_sent=0, packets_recv=0, errin=0, errout=0, dropin=0, dropout=0), 'wlan0': snetio(bytes_sent=0, bytes_recv=0, packets_sent=0, packets_recv=0, errin=0, errout=0, dropin=0, dropout=0), 'wlan1': snetio(bytes_sent=8661301154, bytes_recv=307487609, packets_sent=6672247, packets_recv=3084668, errin=0, errout=0, dropin=0, dropout=0)}
2022-04-17 03:34:23,096 - octoprint.plugins.resource_monitor - DEBUG - net_if_addrs() : {'lo': [snicaddr(family=<AddressFamily.AF_INET: 2>, address='127.0.0.1', netmask='255.0.0.0', broadcast=None, ptp=None), snicaddr(family=<AddressFamily.AF_INET6: 10>, address='::1', netmask='ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff', broadcast=None, ptp=None), snicaddr(family=<AddressFamily.AF_PACKET: 17>, address='00:00:00:00:00:00', netmask=None, broadcast=None, ptp=None)], 'wlan1': [snicaddr(family=<AddressFamily.AF_INET: 2>, address='192.168.50.250', netmask='255.255.255.0', broadcast='192.168.50.255', ptp=None), snicaddr(family=<AddressFamily.AF_INET6: 10>, address='fe80::a962:ec0c:2a2b:3641%wlan1', netmask='ffff:ffff:ffff:ffff::', broadcast=None, ptp=None), snicaddr(family=<AddressFamily.AF_PACKET: 17>, address='ac:22:0b:96:be:48', netmask=None, broadcast='ff:ff:ff:ff:ff:ff', ptp=None)], 'eth0': [snicaddr(family=<AddressFamily.AF_PACKET: 17>, address='b8:27:eb:84:99:af', netmask=None, broadcast='ff:ff:ff:ff:ff:ff', ptp=None)], 'wlan0': [snicaddr(family=<AddressFamily.AF_PACKET: 17>, address='b8:27:eb:d1:cc:fa', netmask=None, broadcast='ff:ff:ff:ff:ff:ff', ptp=None)]}
2022-04-17 03:34:23,954 - octoprint.plugins.resource_monitor - DEBUG - net_if_stats() : {'lo': snicstats(isup=True, duplex=<NicDuplex.NIC_DUPLEX_UNKNOWN: 0>, speed=0, mtu=65536), 'eth0': snicstats(isup=False, duplex=<NicDuplex.NIC_DUPLEX_UNKNOWN: 0>, speed=65535, mtu=1500), 'wlan0': snicstats(isup=False, duplex=<NicDuplex.NIC_DUPLEX_UNKNOWN: 0>, speed=0, mtu=1500), 'wlan1': snicstats(isup=True, duplex=<NicDuplex.NIC_DUPLEX_UNKNOWN: 0>, speed=0, mtu=1500)}
2022-04-17 03:34:23,956 - octoprint.plugins.resource_monitor - DEBUG - sensors_battery() : None
2022-04-17 03:34:24,003 - octoprint.plugins.resource_monitor - DEBUG - cpu_freq() : scpufreq(current=700.0, min=600.0, max=1200.0)
2022-04-17 03:34:24,008 - octoprint.plugins.resource_monitor - DEBUG - cpu_percent(percpu=True) : [7.2, 0.0, 3.1, 8.0]
I'm using psutil to get all the information that is displayed in Resource Monitor. It looks like the call to psutil.net_if_stats() can take nearly one second to complete (in this case nearly 900ms) and I really don't know what could cause this.
Could this be the cause of the freezes ?
Maybe this is linked to this psutil issue.
I would really appreciate if someone could give a second look and help me with this.
If this ends up being an issue with psutil, I'll try to open an issue there.
Thanks for any help