Zdenek Kotala wrote: > Tom Lane napsal(a): >> I see no value in cluttering the system with useless probes. The worker >> start/stop are the only ones here with any conceivable application IMHO. > > As I answered to Alvaro. I needed to catch start of backend several times > to track call flow or attach debugger. It is possible to use some other > dtrace magic for that, but it is not easy and there is not way how to > determine what kind of process it is. For example how to measure how > many writes performs bgwriter?
If you need to attach a debugger to a backend, you can use the -W switch (even on PGOPTIONS if you need it for a particular backend, AFAIR). If you want to "truss" it I guess you can use -W too. Does it have any usefulness beyond that? -- Alvaro Herrera http://www.CommandPrompt.com/ The PostgreSQL Company - Command Prompt, Inc. -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
