Question about mmap and shared arenas

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From: Ken Sewell (sewell++at++donet.com)
Date: 10/19/2001 14:32:24

        From what I've read on the list, an Irix Performer program should be
able to have an arena size of up to 1.7G, is that correct?

        My program under performer 2.2, on a machine with 1.6G physical, could
get about 900M for its shared arena. Now running under performer 2.4 on
a machine with 2.0G I can't grab more than 512M. My system limits on
memoryuse are set to 2G and so is the shmmax. I saw a post about one of
2.4's changes being that it mmaps the shared arena, is there a more
detailed explanation somewhere? How do I get past my 512M limit? Below
is the error that performer gives me.

 1630 PF Info(2): PFSHAREDSIZE overriding size to
1953125.00 KBytes
 1630 PF Info/SysErr(12): pfInitArenas() Could not mmap
/usr/tmp/pfShmemFile.a000PU for size 0x77359400 bytes at 0x0
 1630 PF Info/SysErr: pfInitArenas() Could not create shared
arena of 1953125.00 KB; adjusting to 976562.50 KB
 1630 PF Info/SysErr(12): pfInitArenas() Could not mmap
/usr/tmp/pfShmemFile.a000PU for size 0x3b9aca00 bytes at 0x0
 1630 PF Info/SysErr: pfInitArenas() Could not create shared
arena of 976562.50 KB; adjusting to 488281.25 KB
 1630 PF Debug/Resource: pfInitArenas() Allocated 488281KB:
0x422f8000 - 0x5ffce500

Thanks,
Ken. 

-- 
Ken Sewell			Defense Research Associates
Project Engineer		1430 Oak Ct., Suite 303
sewell++at++dramail.com		Beavercreek, Ohio  45430
937-255-2811 x4377 (voice)      937-255-6663 (fax)

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