Hi Chuck,
You did not see my earlier response where I came to the same conclusion about
the types after looking at some other sites including a wiki. Yes there was
some
confusion but now I am clear that it is compiler dependant as I said earlier.
Thanks,
-Tony
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Tony,
On 3/1/2011 6:27 PM, Tony Anecito wrote:
I believe the effect of compression is relative. In other words for a big
program with lots of 64-bit pointers and 64-bit longs it is helps but for
small
programs it does not.
A long in Java is
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Chuck,
On 3/1/2011 6:09 PM, Caldarale, Charles R wrote:
From: Christopher Schultz [mailto:ch...@christopherschultz.net]
Subject: Re: [OT] IIS7/isapi/tomcat performance
I don't understand why communicating a 64-bit value over a
64-bit bus
message.
Regards,
-Tony
- Original Message
From: Christopher Schultz ch...@christopherschultz.net
To: Tomcat Users List users@tomcat.apache.org
Sent: Wed, March 2, 2011 7:12:43 PM
Subject: Re: [OT] IIS7/isapi/tomcat performance
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Tony,
On 3
, 2011 9:15:09 PM
Subject: Re: [OT] IIS7/isapi/tomcat performance
Actually according to the IBM porting guide longs are different byte lengths
depending upon what frame of reference they are speaking to.
On page 4 of the following port guide:
http://public.dhe.ibm.com/software/dw/jdk/64bitporting
From: Tony Anecito [mailto:adanec...@yahoo.com]
Subject: Re: [OT] IIS7/isapi/tomcat performance
On page 4 of the following port guide:
http://public.dhe.ibm.com/software/dw/jdk/64bitporting/64BitJavaPortingGuide.pdf
It states:For Windows, on 32-bit systems, integers, longs and
pointers
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Tony,
On 2/28/2011 2:57 PM, Tony Anecito wrote:
Since the memory pointers are larger you may need to increase your heap size
but
you can compress the address pointers.
+1
Also, if you use JNI and it is 32-bit then you will have unexpected
the keywords: java 64-bit vs 32-bit performance
You will find alot of discussion about this.
Regards,
-Tony
- Original Message
From: Christopher Schultz ch...@christopherschultz.net
To: Tomcat Users List users@tomcat.apache.org
Sent: Tue, March 1, 2011 8:29:11 AM
Subject: Re: [OT] IIS7
:29:11 AM
Subject: Re: [OT] IIS7/isapi/tomcat performance
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Tony,
On 2/28/2011 2:57 PM, Tony Anecito wrote:
Since the memory pointers are larger you may need to increase your heap size
but
you can compress the address pointers.
+1
Also, if you use
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Tony,
On 3/1/2011 3:24 PM, Tony Anecito wrote:
Also, I have not programmed in assembly language or in hexadecimal for some
time but I would hope that for a 32-bit java process running on a 64-bit
processor I would fetch a 32-bit pointer and
Hi Chris,
I guess you have not read my last email yet. I think of it as putting two
32-bit pieces of info on a 64-bit data bus whereas for two 64-bit pieces of
information it takes two fetches or twice as long on the same hardware.
Depending upon the number of bytes for each data type for
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Tony,
On 3/1/2011 4:19 PM, Tony Anecito wrote:
I guess you have not read my last email yet. I think of it as putting two
32-bit pieces of info on a 64-bit data bus whereas for two 64-bit pieces of
information it takes two fetches or twice as
From: Christopher Schultz [mailto:ch...@christopherschultz.net]
Subject: Re: [OT] IIS7/isapi/tomcat performance
Are you saying that a 32-bit JVM running on a 64-bit machine
somehow utilizes the 64-bit bus? Malarkey.
I wouldn't bet on that. Intel goes to great pains to insure all
From: Christopher Schultz [mailto:ch...@christopherschultz.net]
Subject: Re: [OT] IIS7/isapi/tomcat performance
I don't understand why communicating a 64-bit value over a
64-bit bus would take longer than communicating a 32-bit
value over a 64-bit bus:
Because you get *two* 32-bit values
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Chuck,
On 3/1/2011 5:42 PM, Caldarale, Charles R wrote:
From: Christopher Schultz [mailto:ch...@christopherschultz.net]
Subject: Re: [OT] IIS7/isapi/tomcat performance
Are you saying that a 32-bit JVM running on a 64-bit machine
somehow
From: Christopher Schultz ch...@christopherschultz.net
To: Tomcat Users List users@tomcat.apache.org
Sent: Tue, March 1, 2011 3:00:53 PM
Subject: Re: [OT] IIS7/isapi/tomcat performance
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Tony,
On 3/1/2011 4:19 PM, Tony Anecito wrote:
I guess you
to not get emotional about it but I do miss my 8080 and Z80.
-Tony
- Original Message
From: Caldarale, Charles R chuck.caldar...@unisys.com
To: Tomcat Users List users@tomcat.apache.org
Sent: Tue, March 1, 2011 4:09:10 PM
Subject: RE: [OT] IIS7/isapi/tomcat performance
From: Christopher
From: Christopher Schultz [mailto:ch...@christopherschultz.net]
Subject: Re: [OT] IIS7/isapi/tomcat performance
The question I have is how does the bus controller know
that there are multiple 32-bit values coming down the line,
and that it can send them simultaneously down the bus
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