[squeak-dev] sqAllocateMemorySegmentOfSizeAboveAllocatedSizeInto mmap: Cannot allocate memory
gettimothy
gettimothy at zoho.com
Mon Nov 2 16:06:16 UTC 2020
Hi Eliot,
Hi Timothy,
a few weeks ago debugging an issue raised by Andrei Chis I ran a test runner in the simulator and the out of memory test it included caused the simulator to grow its central byte array to 17Gb. When I saved the image it was 34Gb. The workflow threw up a policy error. The VM would not shrink memory unless it had done a GC but once it had 17 Gb of free space it wasn’t going to do a GC. So I updated the vm and fixed the policy error and now the vm will happily shrink back after growing yo many gigabytes.
This is all just to point out that a match 3rd vm is a tad on the old side.
Thx, I will upgrade the VM ASAP.
BTW, how much ram do you have on your system?
.free -h
total used free shared buff/cache available
Mem: 6.7G 6.0G 225M 1.0M 506M 358M
Swap: 0B 0B 0B
The vm will happily use all of it and more unless you set an upper bound on the size of memory (command line and vm parameter)
./squeak6.0alpha/bin/squeak --headless --memory 3000 squeak6.0alpha/shared/Squeak6.0alpha-19802-64bit.image &
is the command I use. I am not sure what the '3000' refers to, I am assuming it is 3G.
thanks for your help.
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