Hello, While profiling some I/O code that takes ~20 seconds to execute under my local image, the report says that about ~13 seconds is waste on OtherProcesses -> ProcessorScheduler class>>idleProcess. I could not understand what this idleProcess do by looking at the code. First I thought this could be time waiting the I/O operation to terminate, but that don't make much sense because I have the same code on a Digital Ocean Doplet and it takes ~6 seconds to execute. Can someone help me understand what does this time on idleProcess means? The full report is: - 18407 tallies, 18605 msec. **Tree** -------------------------------- Process: (40s) Morphic UI Process: nil -------------------------------- 25.1% {4663ms} UndefinedObject>>DoIt 25.1% {4663ms} TweetsServiceRestConsumer(TweetsService)>>hashesTop:usingLastTweetsUpTo:fromHandler: 25.0% {4656ms} TweetsServiceRestConsumer>>fetchLastTweetsUpTo:fromHandler: 14.3% {2653ms} OAuthProvider>>httpGet: |14.3% {2653ms} ZnOAuth1Service>>httpGet:using: | 14.3% {2653ms} ZnOAuth1Service>>executeRequest:token: | 14.3% {2653ms} ZnOAuth1Service>>executeRequest:token:followRedirects: | 14.2% {2646ms} ZnClient>>execute | 14.2% {2646ms} ZnClient>>withProgressDo: | 14.2% {2646ms} ZnSignalProgress class(DynamicVariable class)>>value:during: | 14.2% {2646ms} ZnSignalProgress(DynamicVariable)>>value:during: | 14.2% {2646ms} BlockClosure>>ensure: | 14.2% {2646ms} ZnSignalProgress(DynamicVariable)>>value:during: | 14.2% {2646ms} ZnClient>>withProgressDo: | 14.2% {2646ms} ZnClient>>execute | 14.2% {2646ms} ZnClient>>executeWithTimeout | 14.2% {2646ms} ZnClient>>withTimeoutDo: | 14.2% {2646ms} ZnConnectionTimeout class(DynamicVariable class)>>value:during: | 14.2% {2646ms} ZnConnectionTimeout(DynamicVariable)>>value:during: | 14.2% {2646ms} BlockClosure>>ensure: | 14.2% {2646ms} ZnConnectionTimeout(DynamicVariable)>>value:during: | 14.2% {2646ms} ZnClient>>withTimeoutDo: | 14.2% {2646ms} ZnClient>>executeWithTimeout | 14.2% {2646ms} BlockClosure>>on:do: | 14.2% {2646ms} ZnClient>>executeWithTimeout | 14.2% {2646ms} ZnClient>>executeWithRetriesRemaining: | 14.2% {2644ms} BlockClosure>>on:do: | 14.2% {2644ms} ZnClient>>executeWithRetriesRemaining: | 14.2% {2644ms} ZnClient>>executeWithRedirectsRemaining: | 14.2% {2641ms} ZnClient>>getConnectionAndExecute | 13.8% {2569ms} BlockClosure>>ensure: | 13.8% {2569ms} ZnClient>>getConnectionAndExecute | 13.8% {2569ms} ZnClient>>executeRequestResponse | 13.8% {2569ms} ZnClient>>readResponse | 13.8% {2569ms} ZnResponse class(ZnMessage class)>>readFrom: | 13.8% {2569ms} ZnResponse(ZnMessage)>>readFrom: | 13.8% {2559ms} ZnResponse>>readEntityFrom: | 13.8% {2559ms} ZnResponse(ZnMessage)>>readEntityFrom: | 13.8% {2559ms} ZnEntityReader>>readEntity | 13.8% {2559ms} ZnEntityReader>>readEntityFromStream | 13.7% {2555ms} ZnEntityReader>>readFrom:usingType:andLength: | 13.7% {2555ms} ZnEntity class>>readFrom:usingType:andLength: | 13.7% {2555ms} ZnStringEntity>>readFrom: | 13.7% {2550ms} BlockClosure>>on:do: | 13.7% {2550ms} ZnStringEntity>>readFrom: | 13.7% {2550ms} ZnUTF8Encoder>>readInto:startingAt:count:fromStream: | 13.7% {2550ms} ZnUTF8Encoder>>optimizedReadInto:startingAt:count:fromStream: | 13.7% {2550ms} ZnLimitedReadStream>>readInto:startingAt:count: | 13.7% {2547ms} ZdcSecureSocketStream(ZdcOptimizedSocketStream)>>readInto:startingAt:count: | 13.7% {2547ms} ZdcSecureSocketStream(ZdcSimpleSocketStream)>>fillReadBuffer | 9.0% {1669ms} ZdcSecureSocketStream(ZdcSimpleSocketStream)>>fillReadBuffer | |5.8% {1076ms} ZdcSecureSocketStream(ZdcSimpleSocketStream)>>fillReadBuffer | | |3.6% {671ms} ZdcSecureSocketStream(ZdcSimpleSocketStream)>>fillReadBuffer | | | |1.8% {337ms} ZdcSecureSocketStream(ZdcSimpleSocketStream)>>fillReadBuffer | | | | |1.2% {225ms} BlockClosure>>on:do: | | | | | 1.2% {225ms} ZdcSecureSocketStream(ZdcSimpleSocketStream)>>fillReadBuffer | | | | | 1.2% {225ms} ZdcSecureSocketStream(ZdcAbstractSocketStream)>>socketWaitForData | | | | | 1.2% {225ms} Socket>>waitForDataFor: | | | | | 1.2% {225ms} Socket>>waitForDataFor:ifClosed:ifTimedOut: | | | | | 1.2% {225ms} Semaphore>>waitTimeoutMSecs: | | | | | 1.2% {225ms} DelayWaitTimeout>>wait | | | | | 1.2% {225ms} BlockClosure>>ensure: | | | | | 1.2% {225ms} DelayWaitTimeout>>wait | | | | | 1.1% {196ms} DelayWaitTimeout(Delay)>>unschedule | | | | | 1.1% {196ms} DelayExperimentalSpinScheduler>>unschedule: | | | |1.8% {335ms} BlockClosure>>on:do: | | | | 1.8% {335ms} ZdcSecureSocketStream(ZdcSimpleSocketStream)>>fillReadBuffer | | | | 1.8% {335ms} ZdcSecureSocketStream(ZdcAbstractSocketStream)>>socketWaitForData | | | | 1.8% {335ms} Socket>>waitForDataFor: | | | | 1.8% {335ms} Socket>>waitForDataFor:ifClosed:ifTimedOut: | | | | 1.8% {335ms} Semaphore>>waitTimeoutMSecs: | | | | 1.8% {335ms} DelayWaitTimeout>>wait | | | | 1.8% {335ms} BlockClosure>>ensure: | | | | 1.8% {335ms} DelayWaitTimeout>>wait | | | | 1.5% {273ms} DelayWaitTimeout(Delay)>>unschedule | | | | 1.5% {273ms} DelayExperimentalSpinScheduler>>unschedule: | | |2.2% {405ms} BlockClosure>>on:do: | | | 2.2% {405ms} ZdcSecureSocketStream(ZdcSimpleSocketStream)>>fillReadBuffer | | | 2.2% {405ms} ZdcSecureSocketStream(ZdcAbstractSocketStream)>>socketWaitForData | | | 2.2% {405ms} Socket>>waitForDataFor: | | | 2.2% {405ms} Socket>>waitForDataFor:ifClosed:ifTimedOut: | | | 2.2% {405ms} Semaphore>>waitTimeoutMSecs: | | | 2.2% {405ms} DelayWaitTimeout>>wait | | | 2.2% {405ms} BlockClosure>>ensure: | | | 2.2% {405ms} DelayWaitTimeout>>wait | | | 1.7% {314ms} DelayWaitTimeout(Delay)>>unschedule | | | 1.7% {314ms} DelayExperimentalSpinScheduler>>unschedule: | |3.2% {592ms} BlockClosure>>on:do: | | 3.2% {592ms} ZdcSecureSocketStream(ZdcSimpleSocketStream)>>fillReadBuffer | | 3.2% {592ms} ZdcSecureSocketStream(ZdcAbstractSocketStream)>>socketWaitForData | | 3.2% {592ms} Socket>>waitForDataFor: | | 3.2% {592ms} Socket>>waitForDataFor:ifClosed:ifTimedOut: | | 3.2% {592ms} Semaphore>>waitTimeoutMSecs: | | 3.2% {592ms} DelayWaitTimeout>>wait | | 3.2% {592ms} BlockClosure>>ensure: | | 3.2% {592ms} DelayWaitTimeout>>wait | | 2.3% {429ms} DelayWaitTimeout(Delay)>>unschedule | | 2.3% {429ms} DelayExperimentalSpinScheduler>>unschedule: | 4.7% {876ms} BlockClosure>>on:do: | 4.7% {876ms} ZdcSecureSocketStream(ZdcSimpleSocketStream)>>fillReadBuffer | 4.7% {876ms} ZdcSecureSocketStream(ZdcAbstractSocketStream)>>socketWaitForData | 4.7% {876ms} Socket>>waitForDataFor: | 4.7% {876ms} Socket>>waitForDataFor:ifClosed:ifTimedOut: | 4.7% {876ms} Semaphore>>waitTimeoutMSecs: | 4.7% {876ms} DelayWaitTimeout>>wait | 4.7% {876ms} BlockClosure>>ensure: | 4.7% {876ms} DelayWaitTimeout>>wait | 2.9% {532ms} DelayWaitTimeout(Delay)>>unschedule | |2.9% {532ms} DelayExperimentalSpinScheduler>>unschedule: | 1.4% {268ms} primitives 10.8% {2002ms} NeoJSONObject class>>fromString: 10.8% {2002ms} NeoJSONReader>>next 10.8% {2002ms} NeoJSONReader>>parseValue 10.8% {2002ms} NeoJSONReader>>parseList 10.8% {2002ms} Array class(SequenceableCollection class)>>streamContents: 10.8% {2002ms} Array class(SequenceableCollection class)>>new:streamContents: 10.8% {2002ms} NeoJSONReader>>parseList 10.8% {2002ms} NeoJSONReader>>parseListElementsDo: 10.8% {2002ms} NeoJSONReader>>parseListDo: 10.8% {2002ms} NeoJSONReader>>parseListElementsDo: 10.8% {2002ms} NeoJSONReader>>parseValue 10.8% {2002ms} NeoJSONReader>>parseMap 10.8% {2002ms} NeoJSONReader>>parseMapKeysAndValuesDo: 10.8% {2002ms} NeoJSONReader>>parseMapKeysDo: 10.8% {2002ms} NeoJSONReader>>parseMapDo: 10.7% {1994ms} NeoJSONReader>>parseMapKeysDo: 9.6% {1785ms} NeoJSONReader>>parseMapKeysAndValuesDo: |9.2% {1717ms} NeoJSONReader>>parseValue | 8.6% {1600ms} NeoJSONReader>>parseMap | 8.6% {1600ms} NeoJSONReader>>parseMapKeysAndValuesDo: | 8.6% {1600ms} NeoJSONReader>>parseMapKeysDo: | 8.6% {1600ms} NeoJSONReader>>parseMapDo: | 8.5% {1577ms} NeoJSONReader>>parseMapKeysDo: | 6.4% {1187ms} NeoJSONReader>>parseMapKeysAndValuesDo: | |5.6% {1041ms} NeoJSONReader>>parseValue | | 3.8% {708ms} NeoJSONReader>>parseList | | 3.8% {706ms} Array class(SequenceableCollection class)>>streamContents: | | 3.8% {706ms} Array class(SequenceableCollection class)>>new:streamContents: | | 3.7% {693ms} NeoJSONReader>>parseList | | 3.7% {693ms} NeoJSONReader>>parseListElementsDo: | | 3.7% {693ms} NeoJSONReader>>parseListDo: | | 3.7% {689ms} NeoJSONReader>>parseListElementsDo: | | 3.7% {689ms} NeoJSONReader>>parseValue | | 3.7% {687ms} NeoJSONReader>>parseMap | | 3.7% {687ms} NeoJSONReader>>parseMapKeysAndValuesDo: | | 3.7% {687ms} NeoJSONReader>>parseMapKeysDo: | | 3.7% {687ms} NeoJSONReader>>parseMapDo: | | 3.6% {672ms} NeoJSONReader>>parseMapKeysDo: | | 3.0% {550ms} NeoJSONReader>>parseMapKeysAndValuesDo: | | 2.6% {486ms} NeoJSONReader>>parseValue | | 1.5% {285ms} NeoJSONReader>>parseMap | | 1.5% {285ms} NeoJSONReader>>parseMapKeysAndValuesDo: | | 1.5% {285ms} NeoJSONReader>>parseMapKeysDo: | | 1.5% {285ms} NeoJSONReader>>parseMapDo: | | 1.5% {285ms} NeoJSONReader>>parseMapKeysDo: | | 1.4% {252ms} NeoJSONReader>>parseMapKeysAndValuesDo: | | 1.3% {236ms} NeoJSONReader>>parseValue | | 1.0% {193ms} NeoJSONReader>>parseMap | | 1.0% {193ms} NeoJSONReader>>parseMapKeysAndValuesDo: | | 1.0% {193ms} NeoJSONReader>>parseMapKeysDo: | | 1.0% {188ms} NeoJSONReader>>parseMapDo: | 1.9% {347ms} NeoJSONReader>>parsePropertyName | 1.1% {196ms} NeoJSONReader>>parseValue | 1.0% {189ms} NeoJSONReader>>parseString 1.0% {189ms} NeoJSONReader>>parsePropertyName -------------------------------- Process: other processes -------------------------------- 73.2% {13628ms} ProcessorScheduler class>>startUp |73.2% {13628ms} ProcessorScheduler class>>idleProcess 1.4% {259ms} WeakArray class>>restartFinalizationProcess 1.4% {259ms} WeakArray class>>finalizationProcess 1.4% {257ms} primitives **Leaves** 73.3% {13631ms} ProcessorScheduler class>>idleProcess 10.0% {1861ms} DelayExperimentalSpinScheduler>>unschedule: 3.1% {581ms} DelayWaitTimeout>>wait 1.4% {257ms} WeakArray class>>finalizationProcess 1.0% {191ms} WeakSet>>scanFor: **Memory** old +16,777,216 bytes young -17,303,480 bytes used -526,264 bytes free +17,303,480 bytes **GCs** full 1 totalling 247ms (1.0% uptime), avg 247.0ms incr 127 totalling 199ms (1.0% uptime), avg 2.0ms tenures 480,033 (avg 0 GCs/tenure) root table 0 overflows Thanks in advance, Vitor