Logging always has a tradeoff between utility and overhead. It would be great to log everything, but it would impact performance too much. So you end up with logging levels, categories, release-only logs, etc.
Pernosco has something for that too. Since it has replay capability, it can replay with more logging than the original execution had. So to some degree, you can have your cake and eat it too. It's not perfect: I think it requires some level of integration with a given logging system, it's not going to do the full I/O to send your logs to where they would ordinarily go (syslogd or whatever), and you can't log values with debug-only code that wasn't compiled into the binary. But it's still a large boost to the fundamental tension around logging.
Pernosco has something for that too. Since it has replay capability, it can replay with more logging than the original execution had. So to some degree, you can have your cake and eat it too. It's not perfect: I think it requires some level of integration with a given logging system, it's not going to do the full I/O to send your logs to where they would ordinarily go (syslogd or whatever), and you can't log values with debug-only code that wasn't compiled into the binary. But it's still a large boost to the fundamental tension around logging.