On 10/30/07, Marcy Cortes <[EMAIL PROTECTED]> wrote: > huge 15 IFL at peak app :)... We've had our share there of these and > badly written code before... The generational GC, new with 6.1, seems > to be a *phenomonal* difference (and I don't say that lightly never > believing that perf knobs at the app level save you much of anything at,
>From what I read about the controls of modern GC in the JVM (not sure this is all new with 6.1) some of it would also be beneficial for Linux on z/VM because it will enforce some locality of reference. Note that you do need sufficient free swap space for Linux to feel secure it can allow the next request for virtual memory, even though the process may never really use it all. That's why you may be unable to satisfy a request for virtual memory even when still free memory and free swap space. An unused VDISK of 2G (or even a few) is a cheap way to do that. Rob -- Rob van der Heij Velocity Software, Inc http://velocitysoftware.com/ ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
