Alert on certain error like 503

[Mattias Geniar]

> What we do is to write to syslog:
> 
> C{ #include <syslog.h> }C
> ...
> sub vcl_error {
> 	C{ syslog(LOG_ERR, "Varnish vcl_error"); }C
> 	...
> 	return(deliver);
> }
> 

Have you had a chance to test how that relates to performance when you
start to get a lot of errors being thrown? I can imagine pushing every
error to syslog can become a bottleneck when it reaches a certain
amount?

Regards,
Mattias