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SystemInfo.MacMemoryHostStatistics
Queries memory host statistics for macOS and iOS.
| Component | Version | macOS | Windows | Linux | Server | iOS SDK |
| SystemInfo | 14.3 | ✅ Yes | ❌ No | ❌ No | ✅ Yes, on macOS | ✅ Yes |
Parameters
none
Result
Returns JSON or error.
Description
Queries memory host statistics for macOS and iOS.| Key | Meaning |
| PageSize | The size of a page in bytes. |
| FreeCount | # of pages free |
| ActiveCount | # of pages active |
| InactiveCount | # of pages inactive |
| WireCount | # of pages wired down |
| ZeroFillCount | # of zero fill pages |
| Reactivations | # of pages reactivated |
| Pageins | # of pageins |
| Pageouts | # of pageouts |
| Faults | # of faults |
| CopyOnWriteFaults | # of copy-on-writes |
| Lookups | object cache lookups |
| Hits | object cache hits |
| Purges | # of pages purged |
| PurgeableCount | # of pages purgeable |
| SpeculativeCount | # of pages speculative |
| Decompressions | # of pages decompressed |
| Compressions | # of pages compressed |
| Swapins | # of pages swapped in (via compression segments) |
| Swapouts | # of pages swapped out (via compression segments) |
| CompressorPageCount | # of pages used by the compressed pager to hold all the compressed data |
| ThrottledCount | # of pages throttled |
| ExternalPageCount | # of pages that are file-backed (non-swap) |
| InternalPageCount | # of pages that are anonymous |
| TotalUncompressedPagesInCompressor | # of pages (uncompressed) held within the compressor. |
You may need to multiple all page counts below with the page size to get size in bytes. Page size is different for Intel vs. Apple Silicon.
The sum of FreeCount and PurgeableCount is the free memory although some software just counts InactiveCount as free as it can be swapped out.
Speculative pages are already accounted for in FreeCount, so SpeculativeCount is the number of "free" pages that are used to hold data that was read speculatively from disk but haven't actually been used by anyone so far.
Examples
Try it:
MBS( "SystemInfo.MacMemoryHostStatistics" )
Example result:
{
"Compressions" : 1985361,
"CompressorPageCount" : 149022,
"Swapins" : 0,
"Hits" : 0,
"SpeculativeCount" : 1578,
"Purges" : 9833309,
"InternalPageCount" : 2359923,
"WireCount" : 264103,
"ThrottledCount" : 0,
"PageSize" : 16384,
"InactiveCount" : 1860387,
"CopyOnWriteFaults" : 11950752,
"ZeroFillCount" : 227376946,
"Decompressions" : 909697,
"Swapouts" : 0,
"TotalUncompressedPagesInCompressor" : 419808,
"ExternalPageCount" : 1357433,
"Reactivations" : 4341900,
"Lookups" : 0,
"Pageouts" : 128639,
"FreeCount" : 5720,
"PurgeableCount" : 827895,
"Pageins" : 39849671,
"Faults" : 422802459,
"ActiveCount" : 1855391
}
Release notes
- Version 14.3
- Added SystemInfo.MacMemoryHostStatistics function.
Blog Entries
- MBS FileMaker Plugin 14.3 News
- Neues MBS Plugin 14.3 für Claris FileMaker
- MBS FileMaker Plugin 14.3 for Claris FileMaker
- MBS @ dotfmp 2024
- MBS FileMaker Plugin, version 14.3pr2
This function checks for a license.
Created 6th June 2024, last changed 6th June 2024
