On Fri, 12 Oct 2007 11:39:20 -0700 Carlos <[EMAIL PROTECTED]> wrote: > I RTFCd and got this: > > $objects_out.puts "run,classname,last,count,delta,lenmean,lensd,lenmax" > > So, > run: a serial number of the request > classname: obvious > last: number of object from previous run > count: number of objects in this run > delta: last - count > lenmean: average length of object > lensd: std deviation > lenmax: largest-seen (or maybe largest-existing?) object of this class > > Right?
Yep, except len(mean|sd|max) are used for objects that report a length, and that header should be created if the file is first created. You must have truncated it at some point. How you use this file is you run a *sequential* number of hits and do it in *production* mode. When it's done you load it into a spreadsheet or R or some Ruby and you look for the following: 1) Any class which seems to have a count who's delta mean isn't close to 0 for all runs. A leak can actually be defined in a GC language as: any class who's object count delta over time do not have a mean of 0. 2) Any class who's average length or sd.dev length is gigantic (send_file anyone?). 3) Any classes who have a mean of 0, but have a sd.dev that's massive. This shows poor GC management since it's a huge number of object being created and destroyed. 4) Any other column that for any class seems to be not like the others. Also look at bleakhouse. -- Zed A. Shaw - Hate: http://savingtheinternetwithhate.com/ - Good: http://www.zedshaw.com/ - Evil: http://yearofevil.com/ _______________________________________________ Mongrel-users mailing list [email protected] http://rubyforge.org/mailman/listinfo/mongrel-users
