Eliot Miranda uploaded a new version of System to project The Trunk:
http://source.squeak.org/trunk/System-eem.931.mcz

==================== Summary ====================

Name: System-eem.931
Author: eem
Time: 9 March 2017, 6:00:34.483842 pm
UUID: 05678f28-fed0-4457-a347-fa9d0a0b092f
Ancestors: System-eem.930

Update the VM Stats report to use an additional decimal place for the percentage of uptime spent in GC and scavenging.

=============== Diff against System-eem.930 ===============

Item was changed:
  ----- Method: SmalltalkImage>>vmStatisticsReportString (in category 'vm statistics') -----
  vmStatisticsReportString
  	"(Workspace new contents: Smalltalk vmStatisticsReportString)
  		openLabel: 'VM Statistics'"
  	"StringHolderView
  		open: (StringHolder new contents: Smalltalk vmStatisticsReportString)
  		label: 'VM Statistics'"
  
  	| params oldSpaceEnd youngSpaceEnd memorySize fullGCs fullGCTime fullGCCompactionTime incrGCs incrGCTime tenureCount upTime
  	  upTime2 fullGCs2 fullGCTime2  incrGCs2 incrGCTime2 tenureCount2 str freeSize youngSize used spur |
  	params := self getVMParameters.
  	oldSpaceEnd			:= params at: 1.
  	youngSpaceEnd		:= params at: 2.
  	memorySize			:= params at: 3.
  	fullGCs				:= params at: 7.
  	fullGCTime			:= params at: 8.
  	incrGCs				:= params at: 9.
  	incrGCTime			:= params at: 10.
  	tenureCount			:= params at: 11.
  	fullGCCompactionTime	:= params at: 18.
  	upTime := (params at: 20) ~= 0 "utcMicrosecondClock at startup in later Spur VMs"
  				ifTrue: [Time utcMicrosecondClock - (params at: 20) + 500 // 1000]
  				ifFalse: [Time eventMillisecondClock]. "Fall back on old microsecond clock; Good for 47.5 days"
  	spur := (params at: 41) anyMask: 16.
  	str := WriteStream on: (String new: 2048).
  	str	nextPutAll: 'uptime		'.
  	upTime >= (60*60*24*1000)
  		ifTrue:
  			[str print: (upTime / 1000 / 60 // 60 // 24); nextPut: $d; space;
  				print: (upTime / 1000 / 60 // 60 \\ 24); nextPut: $h; space]
  		ifFalse: [str print: (upTime / 1000 / 60 // 60); nextPut: $h; space].
  	str
  		print: (upTime / 1000 / 60 \\ 60) asInteger; nextPut: $m; space;
  		print: (upTime / 1000 \\ 60) asInteger; nextPut: $s; cr.
  
  	str	nextPutAll: 'memory		';
  		nextPutAll: memorySize asStringWithCommas; nextPutAll: ' bytes'; cr.
  	str	nextPutAll:	'	old		';
  		nextPutAll: oldSpaceEnd asStringWithCommas; nextPutAll: ' bytes (';
  		print: (oldSpaceEnd / memorySize * 100) maxDecimalPlaces: 1; nextPutAll: '%)'; cr.
  
  	spur ifTrue:
  		[(youngSize := (params at: 19)  * 7 // 5) = 0 ifTrue: [params at: 44].
  		 youngSize := youngSize roundUpTo: 1024.
  		str	nextPutAll: '	young		';
  			nextPutAll: youngSize asStringWithCommas; nextPutAll: ' bytes (';
  			print: youngSize / memorySize * 100 maxDecimalPlaces: 1; nextPutAll: '%)'; cr.
  		youngSize := youngSpaceEnd. "used eden"
  		freeSize := (params at: 54) + (params at: 44) - youngSize.
  		used := youngSize + oldSpaceEnd - freeSize.
  		str	nextPutAll: '	used		';
  			nextPutAll: used asStringWithCommas; nextPutAll: ' bytes (';
  			print: used / memorySize * 100 maxDecimalPlaces: 1; nextPutAll: '%)'; cr.
  		str	nextPutAll: '	free		';
  			nextPutAll: freeSize asStringWithCommas; nextPutAll: ' bytes (';
  			print: freeSize / memorySize * 100 maxDecimalPlaces: 1; nextPutAll: '%)'; cr
  	] ifFalse: [ "Earlier VM and V3 object memory"
  		str	nextPutAll: '	young		';
  			nextPutAll: (youngSpaceEnd - oldSpaceEnd) asStringWithCommas; nextPutAll: ' bytes (';
  			print: (youngSpaceEnd - oldSpaceEnd / memorySize * 100) maxDecimalPlaces: 1; nextPutAll: '%)'; cr.
  		str	nextPutAll: '	used		';
  			nextPutAll: youngSpaceEnd asStringWithCommas; nextPutAll: ' bytes (';
  			print: (youngSpaceEnd / memorySize * 100) maxDecimalPlaces: 1; nextPutAll: '%)'; cr.
  		str	nextPutAll: '	free		';
  			nextPutAll: (memorySize - youngSpaceEnd) asStringWithCommas; nextPutAll: ' bytes (';
  			print: (memorySize - youngSpaceEnd / memorySize * 100) maxDecimalPlaces: 1; nextPutAll: '%)'; cr.
  	].
  
  	str	nextPutAll: 'GCs			';
  		nextPutAll: (fullGCs + incrGCs) asStringWithCommas.
  	fullGCs + incrGCs > 0 ifTrue: [
  		str
  			nextPutAll: ' ('; 
  			print: (upTime / (fullGCs + incrGCs)) maxDecimalPlaces: 1; 
  			nextPutAll: ' ms between GCs)'
  	].
  	str cr.
  	str	nextPutAll: '	full		';
  		nextPutAll: fullGCs asStringWithCommas; nextPutAll: ' totalling '; nextPutAll: fullGCTime asStringWithCommas; nextPutAll: ' ms (';
+ 		print: (fullGCTime / upTime * 100) maxDecimalPlaces: 2;
- 		print: (fullGCTime / upTime * 100) maxDecimalPlaces: 1;
  		nextPutAll: '% uptime)';
  		nextPutAll: ', avg '; print: (fullGCTime / (fullGCs max: 1)) maxDecimalPlaces: 1; nextPutAll: ' ms'.
  	(spur and: [fullGCCompactionTime ~= 0]) ifTrue:
  		[str	cr; nextPutAll: '				marking		';
  			nextPutAll: (fullGCTime - fullGCCompactionTime) asStringWithCommas; nextPutAll: ' ms (';
  			print: (fullGCTime - fullGCCompactionTime) / fullGCTime * 100 maxDecimalPlaces: 1;
  			nextPutAll: '%) avg '; print: (fullGCTime - fullGCCompactionTime / (fullGCs max: 1)) maxDecimalPlaces: 1;
  			nextPutAll: ' ms,'; cr;
  			nextPutAll: '				compacting	';
  			nextPutAll: (fullGCCompactionTime) asStringWithCommas; nextPutAll: ' ms (';
  			print: fullGCCompactionTime / fullGCTime * 100 maxDecimalPlaces: 1;
  			nextPutAll: '%) avg '; print: (fullGCCompactionTime / (fullGCs max: 1)) maxDecimalPlaces: 1;
  			nextPutAll: ' ms'.].
  	str	cr.
  	str	nextPutAll: (spur ifTrue: ['	scavenges	'] ifFalse: ['	incr			']);
  		nextPutAll: incrGCs asStringWithCommas; nextPutAll: ' totalling '; nextPutAll: incrGCTime asStringWithCommas; nextPutAll: ' ms (';
+ 		print: (incrGCTime / upTime * 100) maxDecimalPlaces: 2;
- 		print: (incrGCTime / upTime * 100) maxDecimalPlaces: 1;
  		nextPutAll: '% uptime), avg '; print: (incrGCTime / incrGCs) maxDecimalPlaces: 1; nextPutAll: ' ms'; cr.
  	str	nextPutAll: '	tenures		';
  		nextPutAll: tenureCount asStringWithCommas.
  	tenureCount = 0 ifFalse:
  		[spur
  			ifTrue: [str nextPutAll: ' (avg '; print: tenureCount // (incrGCs max: 1); nextPutAll: ' tenures per scavenge)']
  			ifFalse: [str nextPutAll: ' (avg '; print: incrGCs // tenureCount; nextPutAll: ' GCs/tenure)']].
  	str	cr.
  
  LastStats ifNil: [LastStats := Array new: 6]
  ifNotNil: [
  	upTime2 := upTime - (LastStats at: 1).
  	fullGCs2 := fullGCs - (LastStats at: 2).
  	fullGCTime2 := fullGCTime - (LastStats at: 3).
  	incrGCs2 := incrGCs - (LastStats at: 4).
  	incrGCTime2 := incrGCTime - (LastStats at: 5).
  	tenureCount2 := tenureCount - (LastStats at: 6).
  
  	str	nextPutAll: self textMarkerForShortReport ;
  		nextPutAll: (fullGCs2 + incrGCs2) asStringWithCommas.
  	fullGCs2 + incrGCs2 > 0 ifTrue: [
  		str
  			nextPutAll: ' ('; 
  			print: upTime2 // (fullGCs2 + incrGCs2); 
  			nextPutAll: ' ms between GCs)'.
  	].
  	str cr.
  	str	nextPutAll: '	uptime		'; print: (upTime2 / 1000.0) maxDecimalPlaces: 1; nextPutAll: ' s'; cr.
  	str	nextPutAll: '	full			';
  		nextPutAll: fullGCs2 asStringWithCommas; nextPutAll: ' totalling '; nextPutAll: fullGCTime2 asStringWithCommas; nextPutAll: ' ms (';
  		print: (fullGCTime2 / upTime2 * 100) maxDecimalPlaces: 1;
  		nextPutAll: '% uptime)'.
  	fullGCs2 = 0 ifFalse:
  		[str	nextPutAll: ', avg '; print: (fullGCTime2 / fullGCs2) maxDecimalPlaces: 1; nextPutAll: ' ms'].
  	str	cr.
  	str	nextPutAll: '	incr			';
  		nextPutAll: incrGCs2 asStringWithCommas; nextPutAll: ' totalling '; nextPutAll: incrGCTime2 asStringWithCommas; nextPutAll: ' ms (';
  		print: (incrGCTime2 / upTime2 * 100) maxDecimalPlaces: 1;
  		nextPutAll: '% uptime), avg '.
  	incrGCs2 > 0 ifTrue: [
  		 str print: (incrGCTime2 / incrGCs2) maxDecimalPlaces: 1; nextPutAll: ' ms'
  	].
  	str cr.
  	str	nextPutAll: '	tenures		';
  		nextPutAll: tenureCount2 asStringWithCommas.
  	tenureCount2 = 0 ifFalse:
  		[str nextPutAll: ' (avg '; print: incrGCs2 // tenureCount2; nextPutAll: ' GCs/tenure)'].
  	str	cr.
  ].
  	LastStats at: 1 put: upTime.
  	LastStats at: 2 put: fullGCs.
  	LastStats at: 3 put: fullGCTime.
  	LastStats at: 4 put: incrGCs.
  	LastStats at: 5 put: incrGCTime.
  	LastStats at: 6 put: tenureCount.
  
  	^ str contents
  !