Re: 64-bit Channel Archiver

[Robert Petkus <rpetkus@bnl.gov>]

Thanks for this bit of info

Robert Petkus
Bldg. 902-B, 17 Cornell Avenue
National Synchrotron Light Source II
Brookhaven National Laboratory
Upton, New York 11973
Tel.	: +1 (631) 344 3258
Fax.	: +1 (631) 344 8085
http://www.bnl.gov/nsls2


On 3/28/11 1:10 PM, james.rowland@diamond.ac.uk wrote:
> I forgot to mention the reason we can have an 18GB index is that we have patched the Channel Archiver to support 64 bit file sizes for the index files (-D_FILE_OFFSET_BITS=64), note that this is independent of the kernel architecture bits (64) and the executable architecture bits (32).
>
>> -----Original Message-----
>> From: tech-talk-bounces@aps.anl.gov [mailto:tech-talk-
>> bounces@aps.anl.gov] On Behalf Of james.rowland@diamond.ac.uk
>> Sent: 28 March 2011 17:32
>> To: rpetkus@bnl.gov; tech-talk@aps.anl.gov
>> Subject: RE: 64-bit Channel Archiver
>>
>> Hi
>>
>> We have a 64 bit RHEL5 Channel Archiver server to make good use of 26GB
>> RAM for the disk cache (the index is 18GB). We run the 32 bit EPICS
>> binaries, because we aren't moving to a 64 bit build system until
>> RHEL6, and the Channel Archiver itself doesn't use much RAM. We don't
>> have any problems.
>>
>> James
>>
>>> -----Original Message-----
>>> From: tech-talk-bounces@aps.anl.gov [mailto:tech-talk-
>>> bounces@aps.anl.gov] On Behalf Of Robert Petkus
>>> Sent: 28 March 2011 16:11
>>> To: EPICS
>>> Subject: 64-bit Channel Archiver
>>>
>>> Folks,
>>> I'm setting up our production Channel Archiver and, because the
>> server
>>> will have both large filesystems and copious RAM, I'm inclined to
>>> install a 64-bit OS.  However, our existing CA deployment is running
>> on
>>> 32-bit.
>>>
>>> I wanted to canvas the community and learn:
>>> 1) Is anyone running their production archiver on a 64-bit OS?
>>> 2) Are there any reportable issues running on 64 vs. 32-bit?
>>>
>>> Thanks in advance,
>>>
>>> --
>>> Robert Petkus
>>> Bldg. 902-B, 17 Cornell Avenue
>>> National Synchrotron Light Source II
>>> Brookhaven National Laboratory
>>> Upton, New York 11973
>>> Tel.	: +1 (631) 344 3258
>>> Fax.	: +1 (631) 344 8085
>>> http://www.bnl.gov/nsls2
>>
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>