Mark,
To start, the assignment of 6 gig to maxheap and 2 gig to maxperm is
working perfectly.
I'll expose my ignorance here and ask about that 80%. Is there some
inefficiency in jvm ram assignment in 64 bit in comparison to 32 bit? Is
there more overhead in ram assignment? Just wondering what's
7:19 AM
To: cf-talk
Subject: Re: Good jvm ram settings for 64 bit ColdFusion
Mark,
To start, the assignment of 6 gig to maxheap and 2 gig to maxperm is
working perfectly.
I'll expose my ignorance here and ask about that 80%. Is there some
inefficiency in jvm ram assignment in 64 bit
CF Webtools
www.cfwebtools.com
www.coldfusionmuse.com
O: 402.932.3318
E: mkru...@cfwebtools.com
Skype: markakruger
-Original Message-
From: Michael Dinowitz [mailto:mdino...@houseoffusion.com]
Sent: Tuesday, September 03, 2013 7:19 AM
To: cf-talk
Subject: Re: Good jvm ram
On Tue, Sep 3, 2013 at 9:08 AM, Mark A Kruger mkru...@cfwebtools.comwrote:
In 32 bit addressing each memory address takes up 4 bytes (4 x 8 bits)
but a 64 bit address space is wider (as in 8 x 8 bits). So for example, if
you store an integer - say 14 - on a 32 bit system, it will take 4
etc. I agree with you on the permsize though
-mark
-Original Message-
From: Pete Freitag [mailto:p...@foundeo.com]
Sent: Tuesday, September 03, 2013 11:41 AM
To: cf-talk
Subject: Re: Good jvm ram settings for 64 bit ColdFusion
On Tue, Sep 3, 2013 at 9:08 AM, Mark A Kruger mkru
Also Michael - 2gb perm size seams rather large generally speaking (unless
you have tons of cfm/cfc files). Further if your server has 8GB of ram, and
you are setting 6GB max heap and 2GB max perm size then you are not leaving
any room for the OS to operate when things get full.
I thought
Memory(Heap) is managed in generations, or memory pools holding objects of
different ages. Garbage collection occurs in each generation when the
generation fills up. Objects are allocated in a generation for younger
objects or the young generation, and because of infant mortality most
objects die
Michael,
Rule of thumb is 80% for equivelancy. In other words, a 1.8 gig 64bit is
equal to a 1gig 32 bit. Heap. Or you can just multiply times 2 (which is
usually what I do). So a 6 gig heap is roughly 3 or more times the size of
your 32bit 1 gig heap. If your server is dedicated to CF I think
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