Our 64 bit machines outperform our 32 bit machines like night and day
using Tomcat 5, I can only imagine the difference with Tomcat 6... in
any event there is no difference for Tomcat it depends entirely on the
virtual machine.
>> Big memory is useful ONLY if you have applications that can benefit
big memory such as database
>>systems.
Actually it is allocated directly to the JVM so you can have 50 gig if
you want with no performance penalty
Andrew Miehs wrote:
On 26/07/2007, at 10:57 AM, Joe Nathan wrote:
I would discourage to use such machine! 8GB means you are using 64 bit
machine which will be much slower than 32 bit machines. Big memory is
useful
ONLY if you have applications that can benefit big memory such as
database
systems. In Java, if you use lots of memory and create lots of
objects, your
Java applications will have periodic seisures! This is because of
garbage
collection will take significant time, if started.
Dear Joe - I have more than 1 or 2 of these machines (16GB RAM, 6GB
for Tomcat).
The Sun 64bit JVM 1.5 is about 15% faster than the 32bit for our
application.
(Running under Tomcat)
I would be happy with 1 ~ 2 GB 32bit machines! This could deliver much
faster services.
Java eats memory...
The more memory you have, the more you can cache and the less you need to
annoy your backend.
Andrew
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