Afternoon Mark,

Looks like making the change you suggested ie not needing so many patterns. All those constraints can go in a single Pattern.  has significantly reduced the GC's. We are making the changes to all our rule templates and will rerun.

Is there a difference in Drools 6 that would make using separate Patterns such an overhead?

Thanks

---

From: Mark Proctor [via Drools] <<a href="x-msg://240/user/SendEmail.jtp?type=node&amp;node=4029180&amp;i=0" target="_top" rel="nofollow" link="external">[hidden email]>
To: kellyajp <<a href="x-msg://240/user/SendEmail.jtp?type=node&amp;node=4029180&amp;i=1" target="_top" rel="nofollow" link="external">[hidden email]>
Sent: Wednesday, 2 April 2014, 12:41
Subject: Re: Possible memory leak in Drools 6.0.1

not sure why this would have a memory leak, it all looks quite straight forward joins.

I assume you are using stateless sessions and inserting just a single Position instance? Is there a different number of RT’s after a single Position insert?

A small tip, you don’t need so many patterns. All those constraints can go in a single Pattern. 

Mark

On 2 Apr 2014, at 11:20, kellyajp <[hidden email]> wrote:

Morning Mark,

That was a useful exercise!!, from a sampled set it looks like the RightTuple instances are coming from a single rule package (nccf).

This rule package comes from a large decision table of that is maintained by our business users. This results in a large DRL file being generated containing 2371 rules. 

Below I have included some of the rules that were referenced in the data structures, I have also attached the generated DRL file.

The exact same file processes in Drools 5 but fails in Drools 6.

31usd_lng_corp_bnd_cr_bbb_usd_over0y_under5y_2

// rule values at A650, header at A644

rule "31usd_lng_corp_bnd_cr_bbb_usd_over0y_under5y_2"

    salience 64886

    when

        p: Position(positionDetail!=null && positionDetail.valuation != null && positionDetail.valuation.mtmValue >=0)

        Position(positionDetail.productHierarchy != null && positionDetail.productHierarchy.rbcProductClass == "securities")

        Position(positionDetail.instrument != null && positionDetail.instrument.maturityDate >=positionDetail.riskBusinessDate)

        Position(positionDetail.instrument != null && positionDetail.instrument.maturityDate <positionDetail.riskBusinessDate+157680000000)

        Position(positionDetail.Valuation!= null && positionDetail. Valuation.ValuationCurrency == "USD")

        Position(positionDetail.instrument != null && positionDetail.instrument.marketSectorDescription == "corp")

        Position(positionDetail.instrument != null && positionDetail.instrument.typeOfBond != null && positionDetail.instrument.typeOfBond not in ('convertible','covered' ,'jumbo pfandbriefe'))

        Position(positionDetail.overallCreditQualityStep == 2)

        Position(positionDetail.valuationType in ('Valuation','Both'))

        Position(positionDetail.riskProductType == 'UNKNOWN')

    then

        result.add(classification=new ActionParametersImpl('BaselineClassification'));

        classification.setBaseline('NCCF');

        classification.setLineId("NCCF0100579");

        classification.setObject(p);

        classification.setPositionId(p.getPositionId());

        classification.setDataStatus(p.getDataStatus());

        classification.setCountry(p.getPositionDetail().getBook().getTransit().getLegalEntityCountry());

        classification.setRulePath(ruleHistory.getActivationPath());

        classification.add(a=new ActionParametersImpl( 'BaselineValue'));

        a.setValueName( 'Balance');

        a.setValue( p.getPositionDetail().getValuation().getMtmValue());

        a.setCurrency( p.getPositionDetail().getValuation().getValuationCurrency());

        a.setNettingType('Security');

        a.setAdjustmentType('Fungible Long covers Fungible Short,Fungible Short covers Fungible Long');

        a.setBucket('Total');

        classification.add(a=new ActionParametersImpl( 'BaselineTimeBucket'));

        a.setBaselineType( 'MB');

        a.setValue(p.getPositionDetail().getValuation().getMtmValue());

        a.setCurrency(p.getPositionDetail().getValuation().getValuationCurrency());

        a.setNettingType('Security');

        a.setAdjustmentType('Fungible Long covers Fungible Short,Fungible Short covers Fungible Long');

        a.setBucket('Total');

end

31usd_lng_corp_bnd_cr_bbb_usd_over0y_under10y_2

// rule values at A652, header at A644

rule "31usd_lng_corp_bnd_cr_bbb_usd_over5y_under10y_2"

    salience 64884

    when

        p: Position(positionDetail!=null && positionDetail.valuation != null && positionDetail.valuation.mtmValue >=0)

        Position(positionDetail.productHierarchy != null && positionDetail.productHierarchy.rbcProductClass == "securities")

        Position(positionDetail.instrument != null && positionDetail.instrument.maturityDate >=positionDetail.riskBusinessDate+157680000000)

        Position(positionDetail.instrument != null && positionDetail.instrument.maturityDate <positionDetail.riskBusinessDate+315360000000)

        Position(positionDetail.Valuation!= null && positionDetail. Valuation.ValuationCurrency == "USD")

        Position(positionDetail.instrument != null && positionDetail.instrument.marketSectorDescription == "corp")

        Position(positionDetail.instrument != null && positionDetail.instrument.typeOfBond != null && positionDetail.instrument.typeOfBond not in ('convertible','covered' ,'jumbo pfandbriefe'))

        Position(positionDetail.overallCreditQualityStep == 2)

        Position(positionDetail.valuationType in ('Valuation','Both'))

        Position(positionDetail.riskProductType == 'UNKNOWN')

    then

        result.add(classification=new ActionParametersImpl('BaselineClassification'));

        classification.setBaseline('NCCF');

        classification.setLineId("NCCF0100581");

        classification.setObject(p);

        classification.setPositionId(p.getPositionId());

        classification.setDataStatus(p.getDataStatus());

        classification.setCountry(p.getPositionDetail().getBook().getTransit().getLegalEntityCountry());

        classification.setRulePath(ruleHistory.getActivationPath());

        classification.add(a=new ActionParametersImpl( 'BaselineValue'));

        a.setValueName( 'Balance');

        a.setValue( p.getPositionDetail().getValuation().getMtmValue());

        a.setCurrency( p.getPositionDetail().getValuation().getValuationCurrency());

        a.setNettingType('Security');

        a.setAdjustmentType('Fungible Long covers Fungible Short,Fungible Short covers Fungible Long');

        a.setBucket('Total');

        classification.add(a=new ActionParametersImpl( 'BaselineTimeBucket'));

        a.setBaselineType( 'MB');

        a.setValue(p.getPositionDetail().getValuation().getMtmValue());

        a.setCurrency(p.getPositionDetail().getValuation().getValuationCurrency());

        a.setNettingType('Security');

        a.setAdjustmentType('Fungible Long covers Fungible Short,Fungible Short covers Fungible Long');

        a.setBucket('Total');

end

31usd_lng_corp_bnd_cr_bbb_usd_over5y_under10y_1

// rule values at A651, header at A644

rule "31usd_lng_corp_bnd_cr_bbb_usd_over5y_under10y_1"

    salience 64885

    when

        p: Position(positionDetail!=null && positionDetail.valuation != null && positionDetail.valuation.mtmValue >=0)

        Position(positionDetail.productHierarchy != null && positionDetail.productHierarchy.rbcProductClass == "securities")

        Position(positionDetail.instrument != null && positionDetail.instrument.maturityDate >=positionDetail.riskBusinessDate+157680000000)

        Position(positionDetail.instrument != null && positionDetail.instrument.maturityDate <positionDetail.riskBusinessDate+315360000000)

        Position(positionDetail.Valuation!= null && positionDetail. Valuation.ValuationCurrency == "USD")

        Position(positionDetail.instrument != null && positionDetail.instrument.marketSectorDescription == "corp")

        Position(positionDetail.instrument != null && positionDetail.instrument.typeOfBond != null && positionDetail.instrument.typeOfBond not in ('convertible','covered' ,'jumbo pfandbriefe'))

        Position(positionDetail.overallCreditQualityStep == 2)

        Position(positionDetail.valuationType in ('Valuation','Both'))

        Position(positionDetail.riskProductType != 'UNKNOWN')

    then

        result.add(classification=new ActionParametersImpl('BaselineClassification'));

        classification.setBaseline('NCCF');

        classification.setLineId("NCCF0100581");

        classification.setObject(p);

        classification.setPositionId(p.getPositionId());

        classification.setDataStatus(p.getDataStatus());

        classification.setCountry(p.getPositionDetail().getBook().getTransit().getLegalEntityCountry());

        classification.setRulePath(ruleHistory.getActivationPath());

        classification.add(a=new ActionParametersImpl( 'BaselineValue'));

        a.setValueName( 'Balance');

        a.setValue( p.getPositionDetail().getValuation().getMtmValue());

        a.setCurrency( p.getPositionDetail().getValuation().getValuationCurrency());

        a.setNettingType('Security');

        a.setAdjustmentType('Fungible Long covers Fungible Short,Fungible Short covers Fungible Long');

        a.setBucket('Total');

        classification.add(a=new ActionParametersImpl( 'BaselineCashflow'));

        a.setCashflowType( 'SETTLEMENT, Settlement');

        a.setList(p.getPositionDetail().getCashFlows());

        a.setDefaultDaysToCashFlow (1);

        classification.add(a=new ActionParametersImpl( 'BaselineCashflow'));

        a.setBaselineType( 'CB');

        a.setCashflowType( 'Principal, Interest');

        a.setList(p.getPositionDetail().getCashFlows());

        a.setDefaultDaysToCashFlow (15000);

        classification.add(a=new ActionParametersImpl( 'BaselineTimeBucket'));

        a.setBaselineType( 'MB');

        a.setValue(p.getPositionDetail().getValuation().getMtmValue());

        a.setCurrency(p.getPositionDetail().getValuation().getValuationCurrency());

        a.setDate(p.getPositionDetail().getInstrument().getMaturityDate());

        a.setDefaultDaysToCashFlow (15000);

        a.setNettingType('Security');

        a.setAdjustmentType('Fungible Long covers Fungible Short,Fungible Short covers Fungible Long');

        a.setBucket('Total');

end

08eur_la_lng_qual_mkt_sec_agncy_dbt_7y_Under_10Y_5

// rule values at A954, header at A921

rule "08eur_la_lng_qual_mtk_sec_agncy_dbt_7Y_under_10Y_5"

    salience 64582

    when

        p: Position(positionDetail!=null && positionDetail.valuation != null && positionDetail.valuation.mtmValue >=0)

        Position(positionDetail.productHierarchy != null && positionDetail.productHierarchy.rbcProductClass == "securities")

        Position(positionDetail.valuationType in ('Valuation','Both'))

        Position(positionDetail.instrument != null && positionDetail.instrument.countryOfDomicile in ('AT','BE','BG','CY','CZ','DE','DK','EE','ES','FI','FR' ,'GB','GR' ,'HU' ,'IE' ,'IS' ,'IT' ,'LI' ,'LT' ,'LU' ,'LV' ,'MT' ,'NL' ,'NO' ,'PL' ,'PT' ,'RO' ,'SE' ,'SI' ,'SK'))

        Position(positionDetail.instrument != null && positionDetail.instrument.countryOfIncorporation in ('AT' ,'BE' ,'BG' , 'CY' ,'CZ' ,'DE'  , 'DK' ,'EE' ,'ES', 'FI' ,'FR' ,'GB' , 'GR' ,'HU' ,'IE' , 'IS' ,'IT' ,'LI' , 'LT' ,'LU' ,'LV' , 'MT' ,'NL' ,'NO' , 'PL' ,'PT' ,'RO','SE' ,'SI' ,'SK'))

        Position(positionDetail.Valuation!= null && positionDetail. Valuation.ValuationCurrency == "EUR")

        Position(positionDetail.instrument != null && positionDetail.instrument.collateralType in ('govt liquid gtd','us govt guarant','u.s. government guarantee'))

        Position(positionDetail.instrument != null && positionDetail.instrument.maturityDate >=positionDetail.riskBusinessDate+220752000000)

        Position(positionDetail.instrument != null && positionDetail.instrument.maturityDate <positionDetail.riskBusinessDate+315360000000)

        Position(positionDetail.valuationType in ('Valuation','Both'))

        Position(positionDetail.riskProductType != 'UNKNOWN')

    then

        result.add(classification=new ActionParametersImpl('BaselineClassification'));

        classification.setBaseline('NCCF');

        classification.setLineId("NCCF0100405");

        classification.setObject(p);

        classification.setPositionId(p.getPositionId());

        classification.setDataStatus(p.getDataStatus());

        classification.setCountry(p.getPositionDetail().getBook().getTransit().getLegalEntityCountry());

        classification.setRulePath(ruleHistory.getActivationPath());

        classification.add(a=new ActionParametersImpl( 'BaselineValue'));

        a.setValueName( 'Balance');

        a.setValue( p.getPositionDetail().getValuation().getMtmValue());

        a.setCurrency( p.getPositionDetail().getValuation().getValuationCurrency());

        a.setNettingType('Security');

        a.setAdjustmentType('Fungible Long covers Fungible Short,Fungible Short covers Fungible Long');

        a.setBucket('Total');

        classification.add(a=new ActionParametersImpl( 'BaselineCashflow'));

        a.setCashflowType( 'SETTLEMENT, Settlement');

        a.setList(p.getPositionDetail().getCashFlows());

        a.setDefaultDaysToCashFlow (1);

        classification.add(a=new ActionParametersImpl( 'BaselineCashflow'));

        a.setBaselineType( 'CB');

        a.setCashflowType( 'Principal, Interest');

        a.setList(p.getPositionDetail().getCashFlows());

        a.setDefaultDaysToCashFlow (15000);

        classification.add(a=new ActionParametersImpl( 'BaselineTimeBucket'));

        a.setBaselineType( 'MB');

        a.setValue(p.getPositionDetail().getValuation().getMtmValue());

        a.setCurrency(p.getPositionDetail().getValuation().getValuationCurrency());

        a.setDate(p.getPositionDetail().getInstrument().getMaturityDate());

        a.setDefaultDaysToCashFlow (15000);

        a.setNettingType('Security');

        a.setAdjustmentType('Fungible Long covers Fungible Short,Fungible Short covers Fungible Long');

        a.setBucket('Total');

end

18cad_lng_sec_iss_prov_over10Y_under35Y_2

// rule values at A152, header at A138

rule "18cad_lng_sec_iss_prov_over10y_under35y_2"

    salience 65384

    when

        p: Position(positionDetail!=null && positionDetail.valuation != null && positionDetail.valuation.mtmValue >=0)

        Position(positionDetail.productHierarchy != null && positionDetail.productHierarchy.rbcProductClass == "securities")

        Position(positionDetail.instrument != null && positionDetail.instrument.maturityDate >=positionDetail.riskBusinessDate+315360000000)

        Position(positionDetail.instrument != null && positionDetail.instrument.maturityDate <positionDetail.riskBusinessDate+1103760000000)

        Position(positionDetail.instrument != null && positionDetail.instrument.issuerTicker in ('BRCOL','BcpIPB','ALTA','SCDA'

,'MP','MANPAC','MPTB','ONTW'

,'ONT','ONTB','ONTPAC','Q'

,'QTB','QUEPAC','QW','NBRNS'

,'NS','PRINCE','NF','NFTB'))

        Position(positionDetail.Valuation!= null && positionDetail. Valuation.ValuationCurrency == "CAD")

        Position(positionDetail.instrument != null && positionDetail.instrument.issuerIndustry == "govt regional")

        Position(positionDetail.instrument != null && positionDetail.instrument.marketSectorDescription == "govt")

        Position(positionDetail.valuationType in ('Valuation','Both'))

        Position(positionDetail.riskProductType == 'UNKNOWN')

    then

        result.add(classification=new ActionParametersImpl('BaselineClassification'));

        classification.setBaseline('NCCF');

        classification.setLineId("NCCF0100341");

        classification.setObject(p);

        classification.setPositionId(p.getPositionId());

        classification.setDataStatus(p.getDataStatus());

        classification.setCountry(p.getPositionDetail().getBook().getTransit().getLegalEntityCountry());

        classification.setRulePath(ruleHistory.getActivationPath());

        classification.add(a=new ActionParametersImpl( 'BaselineValue'));

        a.setValueName( 'Balance');

        a.setValue( p.getPositionDetail().getValuation().getMtmValue());

        a.setCurrency( p.getPositionDetail().getValuation().getValuationCurrency());

        a.setNettingType('Security');

        a.setAdjustmentType('Fungible Long covers Fungible Short,Fungible Short covers Fungible Long');

        a.setBucket('Total');

        classification.add(a=new ActionParametersImpl( 'BaselineTimeBucket'));

        a.setBaselineType( 'MB');

        a.setValue(p.getPositionDetail().getValuation().getMtmValue());

        a.setCurrency(p.getPositionDetail().getValuation().getValuationCurrency());

        a.setNettingType('Security');

        a.setAdjustmentType('Fungible Long covers Fungible Short,Fungible Short covers Fungible Long');

        a.setBucket('Total');

end

---

From: Mark Proctor [via Drools] <<a href="<a href="x-msg://43/user/SendEmail.jtp?type=node&amp;amp;node=4029078&amp;amp;i=0">x-msg://43/user/SendEmail.jtp?type=node&amp;node=4029078&amp;i=0" target="_top" rel="nofollow" link="external">[hidden email]>
To: kellyajp <<a href="<a href="x-msg://43/user/SendEmail.jtp?type=node&amp;amp;node=4029078&amp;amp;i=1">x-msg://43/user/SendEmail.jtp?type=node&amp;node=4029078&amp;i=1" target="_top" rel="nofollow" link="external">[hidden email]>
Sent: Tuesday, 1 April 2014, 14:10
Subject: Re: Possible memory leak in Drools 6.0.1

any news?

Mark

On 30 Mar 2014, at 13:38, Mark Proctor <[hidden email]> wrote:

On 30 Mar 2014, at 13:26, kellyajp <[hidden email]> wrote:

I'll get that to you on Monday 

On 30 Mar 2014, at 12:59, "Mark Proctor [via Drools]" <<a href="<a href="<a href="x-msg://133/user/SendEmail.jtp?type=node&amp;amp;amp;node=4029027&amp;amp;amp;i=0">x-msg://133/user/SendEmail.jtp?type=node&amp;amp;node=4029027&amp;amp;i=0"><a href="x-msg://133/user/SendEmail.jtp?type=node&amp;amp;node=4029027&amp;amp;i=0">x-msg://133/user/SendEmail.jtp?type=node&amp;node=4029027&amp;i=0" target="_top" rel="nofollow" link="external">[hidden email]> wrote:

Are you able to isolate what the FH’s are referencing, Sorry that should be RT, not FH. RT == RightTuple, FH == FactHandle.

that might give us an idea of where to look. If you look RightTuple’s they will have a ‘sink' reference (network node) and that sink will have an ‘associates’ map. That map is the rules that node is part of. You can use this to identify the offending rule(s), and maybe paste those rules here?

Mark

On 30 Mar 2014, at 09:03, kellyajp <<a href="<a href="<a href="x-msg://133/user/SendEmail.jtp?type=node&amp;amp;amp;node=4029026&amp;amp;amp;i=0">x-msg://133/user/SendEmail.jtp?type=node&amp;amp;node=4029026&amp;amp;i=0"><a href="x-msg://133/user/SendEmail.jtp?type=node&amp;amp;node=4029026&amp;amp;i=0">x-msg://133/user/SendEmail.jtp?type=node&amp;node=4029026&amp;i=0" target="_top" rel="nofollow" link="external">[hidden email]> wrote:

Thanks

I'll get someone from the team to work on this on Monday. Not sure how easy it will be to isolate but will keep you informed.

Andy
On 28 Mar 2014, at 23:52, "Mark Proctor [via Drools]" <<a href="<a href="<a href="<a href="x-msg://131/user/SendEmail.jtp?type=node&amp;amp;amp;amp;node=4029025&amp;amp;amp;amp;i=0">x-msg://131/user/SendEmail.jtp?type=node&amp;amp;amp;node=4029025&amp;amp;amp;i=0"><a href="x-msg://131/user/SendEmail.jtp?type=node&amp;amp;amp;node=4029025&amp;amp;amp;i=0">x-msg://131/user/SendEmail.jtp?type=node&amp;amp;node=4029025&amp;amp;i=0"><a href="<a href="x-msg://131/user/SendEmail.jtp?type=node&amp;amp;amp;node=4029025&amp;amp;amp;i=0">x-msg://131/user/SendEmail.jtp?type=node&amp;amp;node=4029025&amp;amp;i=0"><a href="x-msg://131/user/SendEmail.jtp?type=node&amp;amp;node=4029025&amp;amp;i=0">x-msg://131/user/SendEmail.jtp?type=node&amp;node=4029025&amp;i=0" target="_top" rel="nofollow" link="external">[hidden email]> wrote:

Can you get us a unit test demonstrating this, and we’ll look into it as a priority. 

Mark 
On 28 Mar 2014, at 15:40, kellyajp <<a href="<a href="<a href="<a href="x-msg://131/user/SendEmail.jtp?type=node&amp;amp;amp;amp;node=4029018&amp;amp;amp;amp;i=0">x-msg://131/user/SendEmail.jtp?type=node&amp;amp;amp;node=4029018&amp;amp;amp;i=0"><a href="x-msg://131/user/SendEmail.jtp?type=node&amp;amp;amp;node=4029018&amp;amp;amp;i=0">x-msg://131/user/SendEmail.jtp?type=node&amp;amp;node=4029018&amp;amp;i=0"><a href="<a href="x-msg://131/user/SendEmail.jtp?type=node&amp;amp;amp;node=4029018&amp;amp;amp;i=0">x-msg://131/user/SendEmail.jtp?type=node&amp;amp;node=4029018&amp;amp;i=0"><a href="x-msg://131/user/SendEmail.jtp?type=node&amp;amp;node=4029018&amp;amp;i=0">x-msg://131/user/SendEmail.jtp?type=node&amp;node=4029018&amp;i=0" target="_top" rel="nofollow" link="external">[hidden email]> wrote: 

> We have upgraded from Drools 5 -> Drools 6.01 and when repeating the 
> processing in each environment we have very different object counts that is 
> causing memory to run out on Drools 6: 
> 
> Below is an extract from a heap dump 
> 
> In Drools 6 the main objects in the heap are 
> 1:       4378006      700480960  org.drools.core.reteoo.RightTuple 
> 
> Where as in Drools 5 there are way less objects 
> 92:         19022        1826112  org.drools.reteoo.RightTuple 
> 
> Has anyone else had any experience of this issue? 
> 
> Thanks 
> 
> 
> 
> -- 
> View this message in context: http://drools.46999.n3.nabble.com/Possible-memory-leak-in-Drools-6-0-1-tp4029010.html
> Sent from the Drools: Developer (committer) mailing list mailing list archive at Nabble.com. 
> _______________________________________________ 
> rules-dev mailing list 
> <a href="<a href="<a href="<a href="x-msg://131/user/SendEmail.jtp?type=node&amp;amp;amp;amp;node=4029018&amp;amp;amp;amp;i=1">x-msg://131/user/SendEmail.jtp?type=node&amp;amp;amp;node=4029018&amp;amp;amp;i=1"><a href="x-msg://131/user/SendEmail.jtp?type=node&amp;amp;amp;node=4029018&amp;amp;amp;i=1">x-msg://131/user/SendEmail.jtp?type=node&amp;amp;node=4029018&amp;amp;i=1"><a href="<a href="x-msg://131/user/SendEmail.jtp?type=node&amp;amp;amp;node=4029018&amp;amp;amp;i=1">x-msg://131/user/SendEmail.jtp?type=node&amp;amp;node=4029018&amp;amp;i=1"><a href="x-msg://131/user/SendEmail.jtp?type=node&amp;amp;node=4029018&amp;amp;i=1">x-msg://131/user/SendEmail.jtp?type=node&amp;node=4029018&amp;i=1" target="_top" rel="nofollow" link="external">[hidden email] 
> https://lists.jboss.org/mailman/listinfo/rules-dev

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