Xpra: Ticket #1742: better diagnostics

When things go wrong we rely on "xpra info" to capture the state of the system so that we can figure out what is going wrong, we may need to add more information in there:

more network layer state
system load, etc

Sat, 13 Jan 2018 11:28:26 GMT - Antoine Martin: owner changed

owner changed from Antoine Martin to J. Max Mena

Done in:

r18002 captures more socket information (varies depending on the type of socket), ie for TCP, SSL, websockets or secure websockets:

$ xpra info | grep socket.options
client.connection.socket.options.IP.IP_MULTICAST_IF=0
client.connection.socket.options.IP.IP_MULTICAST_LOOP=1
client.connection.socket.options.IP.IP_MULTICAST_TTL=64
client.connection.socket.options.IP.IP_OPTIONS=0
client.connection.socket.options.IP.IP_TOS=0
client.connection.socket.options.IP.IP_TTL=64
client.connection.socket.options.SOCKET.SO_BROADCAST=0
client.connection.socket.options.SOCKET.SO_DONTROUTE=0
client.connection.socket.options.SOCKET.SO_ERROR=0
client.connection.socket.options.SOCKET.SO_KEEPALIVE=0
client.connection.socket.options.SOCKET.SO_LINGER=0
client.connection.socket.options.SOCKET.SO_OOBINLINE=0
client.connection.socket.options.SOCKET.SO_RCVBUF=1062000
client.connection.socket.options.SOCKET.SO_RCVLOWAT=1
client.connection.socket.options.SOCKET.SO_RCVTIMEO=0
client.connection.socket.options.SOCKET.SO_REUSEADDR=1
client.connection.socket.options.SOCKET.SO_REUSEPORT=0
client.connection.socket.options.SOCKET.SO_SNDBUF=2626560
client.connection.socket.options.SOCKET.SO_SNDTIMEO=0
client.connection.socket.options.SOCKET.SO_TYPE=1
client.connection.socket.options.TCP.TCP_MAXSEG=65483
client.connection.socket.options.TCP.TCP_NODELAY=1

r18003: server load (load value multiplied by 1000), ie:

$ xpra info | grep server.load
server.load=(630, 640, 680)

r18004: platform fix for win32 to avoid warnings there

@maxmylyn: this may help diagnose performance issues.

Mon, 15 Jan 2018 23:25:56 GMT - J. Max Mena: owner changed

owner changed from J. Max Mena to Antoine Martin

This is all very useful, but I'd like to request another metric to add - iowait - it should be fairly trivial to calculate, and would offer a good metric for users with older/slower Hard Drives. One of my test boxes has a very very slow disk, and as such when I'm doing IO intensive actions, the iowait will go up (as viewed via https://netdata.io - very useful visuals), while the CPU utilization stays notably low. This would be useful in pointing out slow storage (or other devices).

Tue, 16 Jan 2018 03:46:08 GMT - Antoine Martin: owner changed

owner changed from Antoine Martin to J. Max Mena

it should be fairly trivial to calculate

I don't think it is at all, please file a separate ticket for that.

Tue, 16 Jan 2018 17:11:12 GMT - J. Max Mena: status changed; resolution set

status changed from new to closed
resolution set to fixed

Very well, closing this one.

Sat, 23 Jan 2021 05:32:35 GMT - migration script:

this ticket has been moved to: https://github.com/Xpra-org/xpra/issues/1742