> -----Original Message-----
> From: Edward Lee [mailto:community-noreply@qnx.com]
> Sent: May-19-09 4:22 PM
> To: ostech-core_os
> Subject: Out of Memory
> 
> A customer is reporting that their application is attempting to use in
> excess of 3.5 GB of memory, and they are encountering the "out of
> memory" error condition. They are also using pre 6.3.0 SP2, possibly
> before the 36-bit addressing capability was added to x86 and PPC
> systems (customer system is x86).
> 
> - With 36-bit addressing support, can the application exceed 3.5 GB of
> memory used?

No, applications are still 32 bits.

> 
> - How does one enable 36-bit addressing support? Is there a patch that
> needs to be installed, or some parameter on the procnto line in the IFS
> build file?

Add -x to startup-bios

> 
> Their applications is a database server. The high amount of memory
> usage is not because there is a memory leak, it is due to the huge
> amount of logging that is being done.

Will have to break down their application into "sub applications", so each application can access 3.2G each, but they 
can have lots of those application.  To have more than 32 bit addressing per application would required switching to 
64bit mode, which QNX doesn't support at this time.

> 
> Thanks in advance
> 
> _______________________________________________
> OSTech
> http://community.qnx.com/sf/go/post29712
>