Eliot Miranda uploaded a new version of System to project The Trunk: http://source.squeak.org/trunk/System-eem.499.mcz
==================== Summary ====================
Name: System-eem.499 Author: eem Time: 26 October 2012, 5:28:56.206 pm UUID: 816a8088-2f4a-4067-8645-ed0968ca0590 Ancestors: System-ul.498
Document remaining undocumented vmParameters. Document the settable vmParameters in the setter.
=============== Diff against System-ul.498 ===============
Item was changed: ----- Method: SmalltalkImage>>vmParameterAt: (in category 'system attributes') ----- vmParameterAt: parameterIndex "parameterIndex is a positive integer corresponding to one of the VM's internal parameter/metric registers. Answer with the current value of that register. Fail if parameterIndex has no corresponding register. VM parameters are numbered as follows: 1 end of old-space (0-based, read-only) 2 end of young-space (read-only) 3 end of memory (read-only) 4 allocationCount (read-only; nil in Cog VMs) 5 allocations between GCs (read-write; nil in Cog VMs) 6 survivor count tenuring threshold (read-write) 7 full GCs since startup (read-only) 8 total milliseconds in full GCs since startup (read-only) 9 incremental GCs since startup (read-only) 10 total milliseconds in incremental GCs since startup (read-only) 11 tenures of surving objects since startup (read-only) 12-20 specific to the translating VM 21 root table size (read-only) 22 root table overflows since startup (read-only) 23 bytes of extra memory to reserve for VM buffers, plugins, etc. 24 memory threshold above whichto shrink object memory (read-write) 25 memory headroom when growing object memory (read-write) + 26 interruptChecksEveryNms - force an ioProcessEvents every N milliseconds (read-write) - 26 interruptChecksEveryNms - force an ioProcessEvents every N milliseconds (read-write) 27 number of times mark loop iterated for current IGC/FGC (read-only) includes ALL marking + 28 number of times sweep loop iterated for current IGC/FGC (read-only) - 28 number of times sweep loop iterated for current IGC/FGC (read-only) 29 number of times make forward loop iterated for current IGC/FGC (read-only) 30 number of times compact move loop iterated for current IGC/FGC (read-only) 31 number of grow memory requests (read-only) 32 number of shrink memory requests (read-only) 33 number of root table entries used for current IGC/FGC (read-only) 34 number of allocations done before current IGC/FGC (read-only) 35 number of survivor objects after current IGC/FGC (read-only) + 36 millisecond clock when current IGC/FGC completed (read-only) + 37 number of marked objects for Roots of the world, not including Root Table entries for current IGC/FGC (read-only) + 38 milliseconds taken by current IGC (read-only) + 39 Number of finalization signals for Weak Objects pending when current IGC/FGC completed (read-only) + 40 BytesPerWord for this image + 41 imageFormatVersion for the VM - 36 millisecond clock when current IGC/FGC completed (read-only) - 37 number of marked objects for Roots of the world, not including Root Table entries for current IGC/FGC (read-only) - 38 milliseconds taken by current IGC (read-only) - 39 Number of finalization signals for Weak Objects pending when current IGC/FGC completed (read-only) - 40 BytesPerWord for this image - 41 imageFormatVersion for the VM 42 number of stack pages in use (Cog Stack VM only, otherwise nil) 43 desired number of stack pages (stored in image file header, max 65535; Cog VMs only, otherwise nil) 44 size of eden, in bytes (Cog VMs only, otherwise nil) 45 desired size of eden, in bytes (stored in image file header; Cog VMs only, otherwise nil) 46 size of machine code zone, in bytes (stored in image file header; Cog JIT VM only, otherwise nil) 47 desired size of machine code zone, in bytes (applies at startup only, stored in image file header; Cog JIT VM only) 48 various properties of the Cog VM as an integer encoding an array of bit flags. Bit 0: implies the image's Process class has threadId as its 3rd inst var (zero relative) + 49 the size of the external semaphore table (read-write; Cog VMs only) + 50-55 reserved for VM parameters that persist in the image (such as eden above) - 49-55 reserved for VM parameters that persist in the image (such as eden above) 56 number of process switches since startup (read-only) 57 number of ioProcessEvents calls since startup (read-only) 58 number of ForceInterruptCheck (Cog VMs) or quickCheckInterruptCalls (non-Cog VMs) calls since startup (read-only) 59 number of check event calls since startup (read-only) 60 number of stack page overflows since startup (read-only; Cog VMs only) + 61 number of stack page divorces since startup (read-only; Cog VMs only) + 62 number of machine code zone compactions since startup (read-only; Cog VMs only) + 63 milliseconds taken by machine code zone compactions since startup (read-only; Cog VMs only) + 64 current number of machine code methods (read-only; Cog VMs only) + 65 true if the VM supports multiple bytecode sets; (read-only; Cog VMs only; nil in older Cog VMs) + 70 the value of VM_PROXY_MAJOR (the interpreterProxy major version number) + 71 the value of VM_PROXY_MINOR (the interpreterProxy minor version number)" - 61 number of stack page divorces since startup (read-only; Cog VMs only)"
<primitive: 254> self primitiveFailed!
Item was changed: ----- Method: SmalltalkImage>>vmParameterAt:put: (in category 'vm parameters') ----- vmParameterAt: parameterIndex put: newValue "parameterIndex is a positive integer corresponding to one of the VM's internal parameter/metric registers. Store newValue (a positive integer) into that register and answer with the previous value that was stored there. Fail if newValue is out of range, if parameterIndex has no corresponding + register, or if the corresponding register is read-only. - register, or if the corresponding register is read-only."
+ As of 2011-ish the parameters which can be set are + 5 allocations between GCs (read-write; nil in Cog VMs) + 6 survivor count tenuring threshold (read-write) + 23 bytes of extra memory to reserve for VM buffers, plugins, etc. + 24 memory threshold above whichto shrink object memory (read-write) + 25 memory headroom when growing object memory (read-write) + 26 interruptChecksEveryNms - force an ioProcessEvents every N milliseconds (read-write) + 43 desired number of stack pages (stored in image file header, max 65535; Cog VMs only, otherwise nil) + 45 desired size of eden, in bytes (stored in image file header; Cog VMs only, otherwise nil) + 47 desired size of machine code zone, in bytes (applies at startup only, stored in image file header; Cog JIT VM only) + 48 various properties of the Cog VM as an integer encoding an array of bit flags. + Bit 0: implies the image's Process class has threadId as its 3rd inst var (zero relative) + 49 the size of the external semaphore table (read-write; Cog VMs only)" + <primitive: 254> self primitiveFailed!