>From a life-cycle management perspective, do what David said and go 64-bit.
>From a performance perspective, build both and MEASURE the results. (Of course, you'll be running on a 64-bit kernel in most cases, so getting a pure sample will be tricky.) On Wed, Mar 27, 2013 at 10:37 AM, Andrew Porter <[email protected]> wrote: > We have a product one of whose components is written in C; on Intel Linux > we've always built just 32-bit apps for both 32-bit & 64-bit systems because > there is little if any penalty for running a 32-bit app on a 64-bit system. > Other hardware differs: Itanium for instance, when we supported HP-UX it was > definitely better to have this app compiled native 64-bit. > > What is the situation with modern Z 9/10 hardware: should we change our > scripts to build 64-bit or stay with 32-bit? The app is relatively small - > let's say 1.5 Mb of memory for a resident set and modest CPU consumption - > but a fully loaded customer configuration may have hundreds of instances > running at any one time (persistent, once started they stay alive), so any > performance and memory consumption differences between 32 & 64-bit can add up. > > Andrew > > ---------------------------------------------------------------------- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO LINUX-390 or visit > http://www.marist.edu/htbin/wlvindex?LINUX-390 > ---------------------------------------------------------------------- > For more information on Linux on System z, visit > http://wiki.linuxvm.org/ -- -- R; Rick Troth Velocity Software http://www.velocitysoftware.com/ ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/
