Set the preferred page size for the stack and the heap.
On SPARC platforms, the size value must be one of the following:
8K 64K 512K 4M 32M 256M 2G 16G or default
On x86 platforms, the size value must be one of the following:
4K 2M 4M or default
For example: -xpagesize=4M
Not all these page sizes are supported on all platforms and depend on the architecture and Oracle Solaris environment. The page size specified must be a valid page size for the Oracle Solaris operating environment on the target platform. If it is not, the request will be silently ignored at run-time.
Use the pagesize(1) Oracle Solaris command to determine the number of bytes in a page. The operating system offers no guarantee that the page size request will be honored. However, appropriate segment alignment can be used to increase the likelihood of obtaining the requested page size. See the -xsegment_align option on how to set the segment alignment. You can use pmap(1) or meminfo(2) to determine page size of the target platform.
If you specify -xpagesize=default, the flag is ignored; -xpagesize specified without a size value is equivalent to -xpagesize=default.
This option is a macro for the combination -xpagesize_heap=size -xpagesize_stack=size. These two options accept the same arguments as -xpagesize. You can set them both with the same value by specifying -xpagesize=size or you can specify them individually with different values.
Compiling with this flag has the same effect as setting the LD_PRELOAD environment variable to mpss.so.1 with the equivalent options, or running the Oracle Solaris command ppgsz(1) with the equivalent options, before starting the program. See the Oracle Solaris man pages for details.