[Vm-dev] sqAllocateMemorySegmentOfSizeAboveAllocatedSizeInto

[stes@PANDORA.BE]

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Hi,

In an attempt to update the Solaris and OpenIndiana Cog and Stack VM
(OpenSmalltalk), I have encountered a new issue.

It is as if the "memory footprint" (RAM required by Cog VM) has increased.

Both Cog VM 2985 and Stack VM 2984 compile and link in 32bit and 64bit on
Solaris11.3, Solaris11.4 and OpenIndiana.

But on a system with 3GB RAM cog VM fails to start, and same thing on a
different system with 10GB of RAM.

On a Solaris 11.4 system with 16GB RAM cog VM is starting.

So it is as if 16GB is now required ?!

CoInterpreter VMMaker.oscog-eem.2985 uuid: f1d118fb-fac8-4f42-82d9-68635c83d686 Jul 23 2021
StackToRegisterMappingCogit VMMaker.oscog-eem.2991 uuid: e1f9918c-198c-4551-9400-d6bfdcf693c7 Jul 23 2021
VM: 202107231530-OpenSmalltalk-Cog stes at gecko:src/opensmalltalk
Plugins: 202107231530-OpenSmalltalk-Cog stes at gecko:src/opensmalltalk
SunOS gecko 5.11 11.3 i86pc i386 i86pc

Problem in 32 bit on the systems with 3GB and 10GB of RAM:

$ sqcogspursunosht/usr/bin/squeak $HOME/squeak/v5/Squeak6.0alpha-19843-32bit.image 
sqAllocateMemory: initial alloc failed!

and in 64bit :

$ sqcogspur64sunosht/usr/bin/squeak $HOME/squeak/v5/Squeak6.0alpha-20535-64bit.image 
sqAllocateMemorySegmentOfSizeAboveAllocatedSizeInto mmap: Not enough space
sqAllocateMemory: initial alloc failed!

Any idea what is going on here please for the "oscog-eem.2985" Cog VM please ?

The Stack VM still seems to work fine.

Please note that in terms of compilation the Cog VM 2985 compiles fine for me,
it is just that the binary that is produced quits on startup.

Also it is strange that the Cog VM 2985 starts and works fine on the system
with 16GB of RAM.

Note that Cog VM 2967 did not have this issue and was very stable (works
and worked fine).

David Stes

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