Experimental Physics and
Industrial Control System

Robert Petkus <[email protected]> · Mon, 28 Mar 2011 13:12:19 -0400

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, [email protected] 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: [email protected] [mailto:tech-talk-
>> [email protected]] On Behalf Of [email protected]
>> Sent: 28 March 2011 17:32
>> To: [email protected]; [email protected]
>> 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: [email protected] [mailto:tech-talk-
>>> [email protected]] 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
>>
>> --
>> This e-mail and any attachments may contain confidential, copyright and
>> or privileged material, and are for the use of the intended addressee
>> only. If you are not the intended addressee or an authorised recipient
>> of the addressee please notify us of receipt by returning the e-mail
>> and do not use, copy, retain, distribute or disclose the information in
>> or attached to the e-mail.
>> Any opinions expressed within this e-mail are those of the individual
>> and not necessarily of Diamond Light Source Ltd.
>> Diamond Light Source Ltd. cannot guarantee that this e-mail or any
>> attachments are free from viruses and we cannot accept liability for
>> any damage which you may sustain as a result of software viruses which
>> may be transmitted in or with the message.
>> Diamond Light Source Limited (company no. 4375679). Registered in
>> England and Wales with its registered office at Diamond House, Harwell
>> Science and Innovation Campus, Didcot, Oxfordshire, OX11 0DE, United
>> Kingdom
>>
>>
>>
>>
>

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System