Re: [naviserver-devel] ns_proxy hang

[Gustaf N. <ne...@wu...>]

We don't see such hangs either. Does increasing the waittimeout solve 
this issue?
... not as a fix, but to narrow the problem down.
-gn

Am 10.05.17 um 13:38 schrieb David Osborne:
> The manifestation for us in production is quite insidious and 
> difficult to spot the root cause of. Certainly not easy to see via the 
> logs.
>
> One place we are experiencing it is in code which generates outgoing 
> emails. Sometimes, when the outgoing email is particularly large, 
> nsproxy times out while using a external utility to convert (the 
> large) html to text. This never seems like a big issue at the time.
>
> But it's the NEXT task which calls nsproxy which will hang forever 
> without error. The then system just slowly grinds to a halt until 
> naviserver is restarted.
>
> nscp 2> ns_proxy configure exec
> -env {} -exec /usr/lib/naviserver/bin/nsproxy -init {} -reinit {} 
> -maxslaves 8 -maxruns 0 -gettimeout 0 -evaltimeout 0 -sendtimeout 5000 
> -recvtimeout 5000 -waittimeout 1000 -idletimeout 300000
>
> As I mentioned, when I watched the hang in gdb, it seemed to be 
> waitpid() (via NsWaitProcess) where the hung threads are waiting.