Thanks. Are the non-product builds available online to download ?
-Suraj On Thu, Aug 25, 2011 at 1:37 PM, Ramki Ramakrishna < [email protected]> wrote: > ** > Hi Suraj -- > > Either: > > (1) use a non-product build where the flag is available, OR > > (2) rebuild with Verbose declared a product flag (but you will have to deal > with > develop->product contagion which will require more such changes), OR > > (3) (probably the easiest in a specific product build) rebuild with Verbose > changed to > a new product flag of your choice for the specific sites where you > want to print the info > but want to retain the option of turning it off. Depending on where > you do this, this > may also cause a develop->product contagion, but it will be a more > controlled burn, if > i may be allowed to mix my metaphors. > > (..) anything else? > > The above are all one-off's for use in a specific build. > > There may be good reason to protect some of these more useful messages with > a product > flag rather than with a develop flag. I recall Krystal Mok also mentioning > something similar. > Perhaps the community can work on what are the kinds of messages one might > want to > see in production (under control of a suitable manageable/product flag), > and submit an OpenJDK > patch with those changes (hopefully the performance impact of the check or > enablement > will be minor enough when these changes are for example communicating > ergonomic > decisions etc. -- this should of course be performance checked before a > patch is submitted). > > I'm also hoping that in the future some of these may be captured by the > logging framework > under construction. Those working on or planning to work on the logging > framework may hav > more to add. So I am cc'ing the serviceability alias as well. > > -- ramki > > > On 8/25/2011 12:58 PM, suraj puvvada wrote: > > Hi, > > How can I enable DEVELOP mode flags like "Verbose" ? I'm interested in > seeing what the GC code logs - for example : > > if (PrintGCDetails && Verbose) { > gclog_or_tty->print_cr("ConcurrentMarkSweepGeneration::shrink_by:" > " desired_bytes " SIZE_FORMAT > " shrinkable_size_in_bytes " SIZE_FORMAT > " aligned_shrinkable_size_in_bytes " SIZE_FORMAT > " bytes " SIZE_FORMAT, > desired_bytes, shrinkable_size_in_bytes, > aligned_shrinkable_size_in_bytes, bytes); > gclog_or_tty->print_cr(" old_end " SIZE_FORMAT > " unallocated_start " SIZE_FORMAT, > old_end, unallocated_start); > } > > > -Suraj > >
