Re: [Pharo-dev] Cycles lost on startup

2016-09-08 Thread Nicolai Hess 
2016-09-06 12:34 GMT+02:00 Eliot Miranda <eliot.mira...@gmail.com>:

>
>
> On Sep 6, 2016, at 12:25 PM, Nicolai Hess <nicolaih...@gmail.com> wrote:
>
>
>
> 2016-09-06 11:47 GMT+02:00 Henrik Nergaard <henrik.nerga...@uia.no>:
>
>> Rewriting the implementation of #initSelectorTable to:
>>
>>
>>
>> SelectorTable := WeakSet withAll: (CompiledMethod allInstances collect:
>> [:m | m selector] as: IdentitySet).
>>
>>
>>
>> Makes it 20ms faster, so it looks like there is some overhead when using
>> WeakSet compared to first use a normal set to remove duplicates.
>>
>>
>>
>> Another possibility could be to store the selectors in an
>> IdentityDictionary as #selector->count which keep track of how many users
>> of a selector there is itself, instead of using a WeakArray.
>>
>>
>>
>> Best regards,
>>
>> Henrik
>>
>
> Maybe we can just move the rebuilding to the image shutdown instead of the
> image startup ?
>
>
> That's a much better idea.  But only if the image snapshots.  There is no
> point doing it on an exit without saving.
>

Is there a way to see whether we are just quitting or "quit & save" in
Pharos Session/Shutdown list "shutDown:" method ?


>
> And just to drive home the point, 70ms is an age in a web server.  This
> kind of thing really damages Pharo performance in web servers.  One wants
> startup times in the few tens of milliseconds or better.
>
>
>
>
>>
>>
>> *From:* Pharo-dev [mailto:pharo-dev-boun...@lists.pharo.org] *On Behalf
>> Of *Nicolai Hess
>> *Sent:* Monday, September 5, 2016 7:52 PM
>> *To:* Pharo Development List <pharo-dev@lists.pharo.org>
>> *Subject:* Re: [Pharo-dev] Cycles lost on startup
>>
>>
>>
>>
>>
>>
>>
>> 2016-09-05 18:37 GMT+02:00 Eliot Miranda <eliot.mira...@gmail.com>:
>>
>> Hi All,
>>
>>
>>
>> we are simulating a full block Pharo image derived from Pharo 6.  On
>> startup we see a very sad loss of cycles due to a very slow rebuild of the
>> selector table in Symbol class.  Why is this done at each startup?  Here is
>> the stack:
>>
>>
>>
>>   16r107154 M ByteString class(ProtoObject)>identityHash 16r786AE8: a(n)
>> ByteString class
>>
>>   16r10716C M ByteString class(Object)>hash 16r786AE8: a(n) ByteString
>> class
>>
>>   16r10718C M ByteSymbol(String)>hash 16rE6A5C8: a(n) ByteSymbol
>>
>>   16r1071B0 M WeakSet>scanForEmptySlotFor: 16r26B968: a(n) WeakSet
>>
>>   16r1071DC M WeakSet>noCheckNoGrowFillFrom: 16r26B968: a(n) WeakSet
>>
>>   16r1071FC M WeakSet>growTo: 16r26B968: a(n) WeakSet
>>
>>   16r10721C M WeakSet>grow 16r26B968: a(n) WeakSet
>>
>>   16r107234 M WeakSet(HashedCollection)>fullCheck 16r26B968: a(n) WeakSet
>>
>>   16r10724C M WeakSet(HashedCollection)>atNewIndex:put: 16r26B968: a(n)
>> WeakSet
>>
>>   16r107274 M WeakSet>add: 16r26B968: a(n) WeakSet
>>
>>   16r107294 M [] in Symbol class>(nil) 16r1D319A8: a(n) Symbol class
>>
>>   16r1072B8 M Array(SequenceableCollection)>do: 16r3C17370: a(n) Array
>>
>>   16r1072E8 I CompiledMethod class(Behavior)>allInstancesDo: 16r164E260:
>> a(n) CompiledMethod class
>>
>>   16r10730C I Symbol class>initSelectorTable 16r1D319A8: a(n) Symbol class
>>
>>   16r10732C I Symbol class>selectorTable 16r1D319A8: a(n) Symbol class
>>
>>   16r107350 I Symbol class>internSelector: 16r1D319A8: a(n) Symbol class
>>
>>   16r10737C I CompiledMethod>selector: 16r26AB58: a(n) CompiledMethod
>>
>>   16r1073A4 I IRMethod>generate: 16r25A030: a(n) IRMethod
>>
>>   16r1073CC I FFICalloutMethodBuilder>generateMethodFromSpec: 16r255580:
>> a(n) FFICalloutMethodBuilder
>>
>>   16r1073F0 I FFICalloutMethodBuilder>generate 16r255580: a(n)
>> FFICalloutMethodBuilder
>>
>>   16r1030C8 I FFICalloutMethodBuilder>build: 16r255580: a(n)
>> FFICalloutMethodBuilder
>>
>>   16r1030F4 I FFICalloutAPI>function:module: 16r255568: a(n) FFICalloutAPI
>>
>>   16r10311C I UnixEnvironment(Object)>ffiCall:module: 16r3816180: a(n)
>> UnixEnvironment
>>
>>   16r103144 I UnixEnvironment(OSEnvironment)>getEnv: 16r3816180: a(n)
>> UnixEnvironment
>>
>>   16r103168 I UnixEnvironment(OSEnvironment)>at:ifAbsent: 16r3816180:
>> a(n) UnixEnvironment
>>
>>   16r10318C M [] in MacOSResolver>(nil

Re: [Pharo-dev] Cycles lost on startup

2016-09-06 Thread p...@highoctane.be 
Very interesting, especially with ephemeral runs.

Phil

On Tue, Sep 6, 2016 at 12:34 PM, Eliot Miranda <eliot.mira...@gmail.com>
wrote:

>
>
> On Sep 6, 2016, at 12:25 PM, Nicolai Hess <nicolaih...@gmail.com> wrote:
>
>
>
> 2016-09-06 11:47 GMT+02:00 Henrik Nergaard <henrik.nerga...@uia.no>:
>
>> Rewriting the implementation of #initSelectorTable to:
>>
>>
>>
>> SelectorTable := WeakSet withAll: (CompiledMethod allInstances collect:
>> [:m | m selector] as: IdentitySet).
>>
>>
>>
>> Makes it 20ms faster, so it looks like there is some overhead when using
>> WeakSet compared to first use a normal set to remove duplicates.
>>
>>
>>
>> Another possibility could be to store the selectors in an
>> IdentityDictionary as #selector->count which keep track of how many users
>> of a selector there is itself, instead of using a WeakArray.
>>
>>
>>
>> Best regards,
>>
>> Henrik
>>
>
> Maybe we can just move the rebuilding to the image shutdown instead of the
> image startup ?
>
>
> That's a much better idea.  But only if the image snapshots.  There is no
> point doing it on an exit without saving.
>
> And just to drive home the point, 70ms is an age in a web server.  This
> kind of thing really damages Pharo performance in web servers.  One wants
> startup times in the few tens of milliseconds or better.
>
>
>
>
>>
>>
>> *From:* Pharo-dev [mailto:pharo-dev-boun...@lists.pharo.org] *On Behalf
>> Of *Nicolai Hess
>> *Sent:* Monday, September 5, 2016 7:52 PM
>> *To:* Pharo Development List <pharo-dev@lists.pharo.org>
>> *Subject:* Re: [Pharo-dev] Cycles lost on startup
>>
>>
>>
>>
>>
>>
>>
>> 2016-09-05 18:37 GMT+02:00 Eliot Miranda <eliot.mira...@gmail.com>:
>>
>> Hi All,
>>
>>
>>
>> we are simulating a full block Pharo image derived from Pharo 6.  On
>> startup we see a very sad loss of cycles due to a very slow rebuild of the
>> selector table in Symbol class.  Why is this done at each startup?  Here is
>> the stack:
>>
>>
>>
>>   16r107154 M ByteString class(ProtoObject)>identityHash 16r786AE8: a(n)
>> ByteString class
>>
>>   16r10716C M ByteString class(Object)>hash 16r786AE8: a(n) ByteString
>> class
>>
>>   16r10718C M ByteSymbol(String)>hash 16rE6A5C8: a(n) ByteSymbol
>>
>>   16r1071B0 M WeakSet>scanForEmptySlotFor: 16r26B968: a(n) WeakSet
>>
>>   16r1071DC M WeakSet>noCheckNoGrowFillFrom: 16r26B968: a(n) WeakSet
>>
>>   16r1071FC M WeakSet>growTo: 16r26B968: a(n) WeakSet
>>
>>   16r10721C M WeakSet>grow 16r26B968: a(n) WeakSet
>>
>>   16r107234 M WeakSet(HashedCollection)>fullCheck 16r26B968: a(n) WeakSet
>>
>>   16r10724C M WeakSet(HashedCollection)>atNewIndex:put: 16r26B968: a(n)
>> WeakSet
>>
>>   16r107274 M WeakSet>add: 16r26B968: a(n) WeakSet
>>
>>   16r107294 M [] in Symbol class>(nil) 16r1D319A8: a(n) Symbol class
>>
>>   16r1072B8 M Array(SequenceableCollection)>do: 16r3C17370: a(n) Array
>>
>>   16r1072E8 I CompiledMethod class(Behavior)>allInstancesDo: 16r164E260:
>> a(n) CompiledMethod class
>>
>>   16r10730C I Symbol class>initSelectorTable 16r1D319A8: a(n) Symbol class
>>
>>   16r10732C I Symbol class>selectorTable 16r1D319A8: a(n) Symbol class
>>
>>   16r107350 I Symbol class>internSelector: 16r1D319A8: a(n) Symbol class
>>
>>   16r10737C I CompiledMethod>selector: 16r26AB58: a(n) CompiledMethod
>>
>>   16r1073A4 I IRMethod>generate: 16r25A030: a(n) IRMethod
>>
>>   16r1073CC I FFICalloutMethodBuilder>generateMethodFromSpec: 16r255580:
>> a(n) FFICalloutMethodBuilder
>>
>>   16r1073F0 I FFICalloutMethodBuilder>generate 16r255580: a(n)
>> FFICalloutMethodBuilder
>>
>>   16r1030C8 I FFICalloutMethodBuilder>build: 16r255580: a(n)
>> FFICalloutMethodBuilder
>>
>>   16r1030F4 I FFICalloutAPI>function:module: 16r255568: a(n) FFICalloutAPI
>>
>>   16r10311C I UnixEnvironment(Object)>ffiCall:module: 16r3816180: a(n)
>> UnixEnvironment
>>
>>   16r103144 I UnixEnvironment(OSEnvironment)>getEnv: 16r3816180: a(n)
>> UnixEnvironment
>>
>>   16r103168 I UnixEnvironment(OSEnvironment)>at:ifAbsent: 16r3816180:
>> a(n) UnixEnvironment
>>
>>   16r10318C M [] in MacOSResolver>(nil) 16r241170: a(n) MacOSResolver
>>
>>   16r1031A4 M FullBlockClosure(Bl

Re: [Pharo-dev] Cycles lost on startup

2016-09-06 Thread Eliot Miranda 


> On Sep 6, 2016, at 12:25 PM, Nicolai Hess <nicolaih...@gmail.com> wrote:
> 
> 
> 
> 2016-09-06 11:47 GMT+02:00 Henrik Nergaard <henrik.nerga...@uia.no>:
>> Rewriting the implementation of #initSelectorTable to:
>> 
>>  
>> 
>> SelectorTable := WeakSet withAll: (CompiledMethod allInstances collect: [:m 
>> | m selector] as: IdentitySet).
>> 
>>  
>> 
>> Makes it 20ms faster, so it looks like there is some overhead when using 
>> WeakSet compared to first use a normal set to remove duplicates.
>> 
>>  
>> 
>> Another possibility could be to store the selectors in an IdentityDictionary 
>> as #selector->count which keep track of how many users of a selector there 
>> is itself, instead of using a WeakArray.
>> 
>>  
>> 
>> Best regards,
>> 
>> Henrik
>> 
> 
> Maybe we can just move the rebuilding to the image shutdown instead of the 
> image startup ?

That's a much better idea.  But only if the image snapshots.  There is no point 
doing it on an exit without saving.

And just to drive home the point, 70ms is an age in a web server.  This kind of 
thing really damages Pharo performance in web servers.  One wants startup times 
in the few tens of milliseconds or better.

> 
>  
>>  
>> 
>> From: Pharo-dev [mailto:pharo-dev-boun...@lists.pharo.org] On Behalf Of 
>> Nicolai Hess
>> Sent: Monday, September 5, 2016 7:52 PM
>> To: Pharo Development List <pharo-dev@lists.pharo.org>
>> Subject: Re: [Pharo-dev] Cycles lost on startup
>> 
>>  
>> 
>>  
>> 
>>  
>> 
>> 2016-09-05 18:37 GMT+02:00 Eliot Miranda <eliot.mira...@gmail.com>:
>> 
>> Hi All,
>> 
>>  
>> 
>> we are simulating a full block Pharo image derived from Pharo 6.  On 
>> startup we see a very sad loss of cycles due to a very slow rebuild of the 
>> selector table in Symbol class.  Why is this done at each startup?  Here is 
>> the stack:
>> 
>>  
>> 
>>   16r107154 M ByteString class(ProtoObject)>identityHash 16r786AE8: a(n) 
>> ByteString class
>> 
>>   16r10716C M ByteString class(Object)>hash 16r786AE8: a(n) ByteString class
>> 
>>   16r10718C M ByteSymbol(String)>hash 16rE6A5C8: a(n) ByteSymbol
>> 
>>   16r1071B0 M WeakSet>scanForEmptySlotFor: 16r26B968: a(n) WeakSet
>> 
>>   16r1071DC M WeakSet>noCheckNoGrowFillFrom: 16r26B968: a(n) WeakSet
>> 
>>   16r1071FC M WeakSet>growTo: 16r26B968: a(n) WeakSet
>> 
>>   16r10721C M WeakSet>grow 16r26B968: a(n) WeakSet
>> 
>>   16r107234 M WeakSet(HashedCollection)>fullCheck 16r26B968: a(n) WeakSet
>> 
>>   16r10724C M WeakSet(HashedCollection)>atNewIndex:put: 16r26B968: a(n) 
>> WeakSet
>> 
>>   16r107274 M WeakSet>add: 16r26B968: a(n) WeakSet
>> 
>>   16r107294 M [] in Symbol class>(nil) 16r1D319A8: a(n) Symbol class
>> 
>>   16r1072B8 M Array(SequenceableCollection)>do: 16r3C17370: a(n) Array
>> 
>>   16r1072E8 I CompiledMethod class(Behavior)>allInstancesDo: 16r164E260: 
>> a(n) CompiledMethod class
>> 
>>   16r10730C I Symbol class>initSelectorTable 16r1D319A8: a(n) Symbol class
>> 
>>   16r10732C I Symbol class>selectorTable 16r1D319A8: a(n) Symbol class
>> 
>>   16r107350 I Symbol class>internSelector: 16r1D319A8: a(n) Symbol class
>> 
>>   16r10737C I CompiledMethod>selector: 16r26AB58: a(n) CompiledMethod
>> 
>>   16r1073A4 I IRMethod>generate: 16r25A030: a(n) IRMethod
>> 
>>   16r1073CC I FFICalloutMethodBuilder>generateMethodFromSpec: 16r255580: 
>> a(n) FFICalloutMethodBuilder
>> 
>>   16r1073F0 I FFICalloutMethodBuilder>generate 16r255580: a(n) 
>> FFICalloutMethodBuilder
>> 
>>   16r1030C8 I FFICalloutMethodBuilder>build: 16r255580: a(n) 
>> FFICalloutMethodBuilder
>> 
>>   16r1030F4 I FFICalloutAPI>function:module: 16r255568: a(n) FFICalloutAPI
>> 
>>   16r10311C I UnixEnvironment(Object)>ffiCall:module: 16r3816180: a(n) 
>> UnixEnvironment
>> 
>>   16r103144 I UnixEnvironment(OSEnvironment)>getEnv: 16r3816180: a(n) 
>> UnixEnvironment
>> 
>>   16r103168 I UnixEnvironment(OSEnvironment)>at:ifAbsent: 16r3816180: a(n) 
>> UnixEnvironment
>> 
>>   16r10318C M [] in MacOSResolver>(nil) 16r241170: a(n) MacOSResolver
>> 
>>   16r1031A4 M FullBlockClosure(BlockClosure)>on:do: 16r2553F0: a(n) 
>> FullBlockClosure
>> 
>>   16r1031D0 I 
>> MacOSResolver(Pl

Re: [Pharo-dev] Cycles lost on startup

2016-09-06 Thread Nicolai Hess 
2016-09-06 11:47 GMT+02:00 Henrik Nergaard <henrik.nerga...@uia.no>:

> Rewriting the implementation of #initSelectorTable to:
>
>
>
> SelectorTable := WeakSet withAll: (CompiledMethod allInstances collect:
> [:m | m selector] as: IdentitySet).
>
>
>
> Makes it 20ms faster, so it looks like there is some overhead when using
> WeakSet compared to first use a normal set to remove duplicates.
>
>
>
> Another possibility could be to store the selectors in an
> IdentityDictionary as #selector->count which keep track of how many users
> of a selector there is itself, instead of using a WeakArray.
>
>
>
> Best regards,
>
> Henrik
>

Maybe we can just move the rebuilding to the image shutdown instead of the
image startup ?



>
>
> *From:* Pharo-dev [mailto:pharo-dev-boun...@lists.pharo.org] *On Behalf
> Of *Nicolai Hess
> *Sent:* Monday, September 5, 2016 7:52 PM
> *To:* Pharo Development List <pharo-dev@lists.pharo.org>
> *Subject:* Re: [Pharo-dev] Cycles lost on startup
>
>
>
>
>
>
>
> 2016-09-05 18:37 GMT+02:00 Eliot Miranda <eliot.mira...@gmail.com>:
>
> Hi All,
>
>
>
> we are simulating a full block Pharo image derived from Pharo 6.  On
> startup we see a very sad loss of cycles due to a very slow rebuild of the
> selector table in Symbol class.  Why is this done at each startup?  Here is
> the stack:
>
>
>
>   16r107154 M ByteString class(ProtoObject)>identityHash 16r786AE8: a(n)
> ByteString class
>
>   16r10716C M ByteString class(Object)>hash 16r786AE8: a(n) ByteString
> class
>
>   16r10718C M ByteSymbol(String)>hash 16rE6A5C8: a(n) ByteSymbol
>
>   16r1071B0 M WeakSet>scanForEmptySlotFor: 16r26B968: a(n) WeakSet
>
>   16r1071DC M WeakSet>noCheckNoGrowFillFrom: 16r26B968: a(n) WeakSet
>
>   16r1071FC M WeakSet>growTo: 16r26B968: a(n) WeakSet
>
>   16r10721C M WeakSet>grow 16r26B968: a(n) WeakSet
>
>   16r107234 M WeakSet(HashedCollection)>fullCheck 16r26B968: a(n) WeakSet
>
>   16r10724C M WeakSet(HashedCollection)>atNewIndex:put: 16r26B968: a(n)
> WeakSet
>
>   16r107274 M WeakSet>add: 16r26B968: a(n) WeakSet
>
>   16r107294 M [] in Symbol class>(nil) 16r1D319A8: a(n) Symbol class
>
>   16r1072B8 M Array(SequenceableCollection)>do: 16r3C17370: a(n) Array
>
>   16r1072E8 I CompiledMethod class(Behavior)>allInstancesDo: 16r164E260:
> a(n) CompiledMethod class
>
>   16r10730C I Symbol class>initSelectorTable 16r1D319A8: a(n) Symbol class
>
>   16r10732C I Symbol class>selectorTable 16r1D319A8: a(n) Symbol class
>
>   16r107350 I Symbol class>internSelector: 16r1D319A8: a(n) Symbol class
>
>   16r10737C I CompiledMethod>selector: 16r26AB58: a(n) CompiledMethod
>
>   16r1073A4 I IRMethod>generate: 16r25A030: a(n) IRMethod
>
>   16r1073CC I FFICalloutMethodBuilder>generateMethodFromSpec: 16r255580:
> a(n) FFICalloutMethodBuilder
>
>   16r1073F0 I FFICalloutMethodBuilder>generate 16r255580: a(n)
> FFICalloutMethodBuilder
>
>   16r1030C8 I FFICalloutMethodBuilder>build: 16r255580: a(n)
> FFICalloutMethodBuilder
>
>   16r1030F4 I FFICalloutAPI>function:module: 16r255568: a(n) FFICalloutAPI
>
>   16r10311C I UnixEnvironment(Object)>ffiCall:module: 16r3816180: a(n)
> UnixEnvironment
>
>   16r103144 I UnixEnvironment(OSEnvironment)>getEnv: 16r3816180: a(n)
> UnixEnvironment
>
>   16r103168 I UnixEnvironment(OSEnvironment)>at:ifAbsent: 16r3816180:
> a(n) UnixEnvironment
>
>   16r10318C M [] in MacOSResolver>(nil) 16r241170: a(n) MacOSResolver
>
>   16r1031A4 M FullBlockClosure(BlockClosure)>on:do: 16r2553F0: a(n)
> FullBlockClosure
>
>   16r1031D0 I MacOSResolver(PlatformResolver)>
> directoryFromEnvVariableNamed:or: 16r241170: a(n) MacOSResolver
>
>   16r1031F8 I MacOSResolver(PlatformResolver)>directoryFromEnvVariableNamed:
> 16r241170: a(n) MacOSResolver
>
>   16r10321C I MacOSResolver>home 16r241170: a(n) MacOSResolver
>
>   16r10323C I MacOSResolver>userLibrary 16r241170: a(n) MacOSResolver
>
>   16r103254 M MacOSResolver>userApplicationSupport 16r241170: a(n)
> MacOSResolver
>
>   16r10326C M MacOSResolver(FileSystemResolver)>resolve: 16r241170: a(n)
> MacOSResolver
>
>   16r103288 M SystemResolver(FileSystemResolver)>unknownOrigin:
> 16r240D30: a(n) SystemResolver
>
>   16r1032A4 M SystemResolver(FileSystemResolver)>resolve: 16r240D30: a(n)
> SystemResolver
>
>   16r1032C4 M InteractiveResolver>unknownOrigin: 16r240CF0: a(n)
> InteractiveResolver
>
>   16r1032E4 M [] in InteractiveResolver>(nil) 16r240CF0: a(n)
> InteractiveResolver
>
>

Re: [Pharo-dev] Cycles lost on startup

2016-09-06 Thread Henrik Nergaard 
Rewriting the implementation of #initSelectorTable to:

SelectorTable := WeakSet withAll: (CompiledMethod allInstances collect: [:m | m 
selector] as: IdentitySet).

Makes it 20ms faster, so it looks like there is some overhead when using 
WeakSet compared to first use a normal set to remove duplicates.

Another possibility could be to store the selectors in an IdentityDictionary as 
#selector->count which keep track of how many users of a selector there is 
itself, instead of using a WeakArray.

Best regards,
Henrik

From: Pharo-dev [mailto:pharo-dev-boun...@lists.pharo.org] On Behalf Of Nicolai 
Hess
Sent: Monday, September 5, 2016 7:52 PM
To: Pharo Development List <pharo-dev@lists.pharo.org>
Subject: Re: [Pharo-dev] Cycles lost on startup



2016-09-05 18:37 GMT+02:00 Eliot Miranda 
<eliot.mira...@gmail.com<mailto:eliot.mira...@gmail.com>>:
Hi All,

we are simulating a full block Pharo image derived from Pharo 6.  On 
startup we see a very sad loss of cycles due to a very slow rebuild of the 
selector table in Symbol class.  Why is this done at each startup?  Here is the 
stack:

  16r107154 M ByteString class(ProtoObject)>identityHash 16r786AE8: a(n) 
ByteString class
  16r10716C M ByteString class(Object)>hash 16r786AE8: a(n) ByteString class
  16r10718C M ByteSymbol(String)>hash 16rE6A5C8: a(n) ByteSymbol
  16r1071B0 M WeakSet>scanForEmptySlotFor: 16r26B968: a(n) WeakSet
  16r1071DC M WeakSet>noCheckNoGrowFillFrom: 16r26B968: a(n) WeakSet
  16r1071FC M WeakSet>growTo: 16r26B968: a(n) WeakSet
  16r10721C M WeakSet>grow 16r26B968: a(n) WeakSet
  16r107234 M WeakSet(HashedCollection)>fullCheck 16r26B968: a(n) WeakSet
  16r10724C M WeakSet(HashedCollection)>atNewIndex:put: 16r26B968: a(n) WeakSet
  16r107274 M WeakSet>add: 16r26B968: a(n) WeakSet
  16r107294 M [] in Symbol class>(nil) 16r1D319A8: a(n) Symbol class
  16r1072B8 M Array(SequenceableCollection)>do: 16r3C17370: a(n) Array
  16r1072E8 I CompiledMethod class(Behavior)>allInstancesDo: 16r164E260: a(n) 
CompiledMethod class
  16r10730C I Symbol class>initSelectorTable 16r1D319A8: a(n) Symbol class
  16r10732C I Symbol class>selectorTable 16r1D319A8: a(n) Symbol class
  16r107350 I Symbol class>internSelector: 16r1D319A8: a(n) Symbol class
  16r10737C I CompiledMethod>selector: 16r26AB58: a(n) CompiledMethod
  16r1073A4 I IRMethod>generate: 16r25A030: a(n) IRMethod
  16r1073CC I FFICalloutMethodBuilder>generateMethodFromSpec: 16r255580: a(n) 
FFICalloutMethodBuilder
  16r1073F0 I FFICalloutMethodBuilder>generate 16r255580: a(n) 
FFICalloutMethodBuilder
  16r1030C8 I FFICalloutMethodBuilder>build: 16r255580: a(n) 
FFICalloutMethodBuilder
  16r1030F4 I FFICalloutAPI>function:module: 16r255568: a(n) FFICalloutAPI
  16r10311C I UnixEnvironment(Object)>ffiCall:module: 16r3816180: a(n) 
UnixEnvironment
  16r103144 I UnixEnvironment(OSEnvironment)>getEnv: 16r3816180: a(n) 
UnixEnvironment
  16r103168 I UnixEnvironment(OSEnvironment)>at:ifAbsent: 16r3816180: a(n) 
UnixEnvironment
  16r10318C M [] in MacOSResolver>(nil) 16r241170: a(n) MacOSResolver
  16r1031A4 M FullBlockClosure(BlockClosure)>on:do: 16r2553F0: a(n) 
FullBlockClosure
  16r1031D0 I MacOSResolver(PlatformResolver)>directoryFromEnvVariableNamed:or: 
16r241170: a(n) MacOSResolver
  16r1031F8 I MacOSResolver(PlatformResolver)>directoryFromEnvVariableNamed: 
16r241170: a(n) MacOSResolver
  16r10321C I MacOSResolver>home 16r241170: a(n) MacOSResolver
  16r10323C I MacOSResolver>userLibrary 16r241170: a(n) MacOSResolver
  16r103254 M MacOSResolver>userApplicationSupport 16r241170: a(n) MacOSResolver
  16r10326C M MacOSResolver(FileSystemResolver)>resolve: 16r241170: a(n) 
MacOSResolver
  16r103288 M SystemResolver(FileSystemResolver)>unknownOrigin: 16r240D30: a(n) 
SystemResolver
  16r1032A4 M SystemResolver(FileSystemResolver)>resolve: 16r240D30: a(n) 
SystemResolver
  16r1032C4 M InteractiveResolver>unknownOrigin: 16r240CF0: a(n) 
InteractiveResolver
  16r1032E4 M [] in InteractiveResolver>(nil) 16r240CF0: a(n) 
InteractiveResolver
  16r103300 M IdentityDictionary(Dictionary)>at:ifAbsent: 16r240D00: a(n) 
IdentityDictionary
  16r103320 M InteractiveResolver>resolve: 16r240CF0: a(n) InteractiveResolver
  16r10333C M FileLocator>resolve 16r255258: a(n) FileLocator
  16r103354 M FileLocator(AbstractFileReference)>exists 16r255258: a(n) 
FileLocator
  16r10337C M [] in PharoFilesOpener>(nil) 16rE79FD8: a(n) PharoFilesOpener
  16r103398 M [] in PharoFilesOpener>(nil) 16rE79FD8: a(n) PharoFilesOpener
  16r1033B0 M FullBlockClosure(BlockClosure)>on:do: 16r255190: a(n) 
FullBlockClosure
  16r1033D0 M FullBlockClosure(BlockClosure)>ifError: 16r255190: a(n) 
FullBlockClosure
  16r1033EC M PharoFilesOpener>ignoreIfFail: 16rE79FD8: a(n) PharoFilesOpener
  16r102188 M [] in PharoFilesOpener>(nil) 16rE79FD8: a(n) PharoFilesOpener
  16r102

Re: [Pharo-dev] Cycles lost on startup

2016-09-06 Thread Esteban Lorenzano 

> On 05 Sep 2016, at 19:52, Nicolai Hess  wrote:
> 
> 
> 
> 2016-09-05 18:37 GMT+02:00 Eliot Miranda  >:
> Hi All,
> 
> we are simulating a full block Pharo image derived from Pharo 6.  On 
> startup we see a very sad loss of cycles due to a very slow rebuild of the 
> selector table in Symbol class.  Why is this done at each startup?  Here is 
> the stack:
> 
>   16r107154 M ByteString class(ProtoObject)>identityHash 16r786AE8: a(n) 
> ByteString class
>   16r10716C M ByteString class(Object)>hash 16r786AE8: a(n) ByteString class
>   16r10718C M ByteSymbol(String)>hash 16rE6A5C8: a(n) ByteSymbol
>   16r1071B0 M WeakSet>scanForEmptySlotFor: 16r26B968: a(n) WeakSet
>   16r1071DC M WeakSet>noCheckNoGrowFillFrom: 16r26B968: a(n) WeakSet
>   16r1071FC M WeakSet>growTo: 16r26B968: a(n) WeakSet
>   16r10721C M WeakSet>grow 16r26B968: a(n) WeakSet
>   16r107234 M WeakSet(HashedCollection)>fullCheck 16r26B968: a(n) WeakSet
>   16r10724C M WeakSet(HashedCollection)>atNewIndex:put: 16r26B968: a(n) 
> WeakSet
>   16r107274 M WeakSet>add: 16r26B968: a(n) WeakSet
>   16r107294 M [] in Symbol class>(nil) 16r1D319A8: a(n) Symbol class
>   16r1072B8 M Array(SequenceableCollection)>do: 16r3C17370: a(n) Array
>   16r1072E8 I CompiledMethod class(Behavior)>allInstancesDo: 16r164E260: a(n) 
> CompiledMethod class
>   16r10730C I Symbol class>initSelectorTable 16r1D319A8: a(n) Symbol class
>   16r10732C I Symbol class>selectorTable 16r1D319A8: a(n) Symbol class
>   16r107350 I Symbol class>internSelector: 16r1D319A8: a(n) Symbol class
>   16r10737C I CompiledMethod>selector: 16r26AB58: a(n) CompiledMethod
>   16r1073A4 I IRMethod>generate: 16r25A030: a(n) IRMethod
>   16r1073CC I FFICalloutMethodBuilder>generateMethodFromSpec: 16r255580: a(n) 
> FFICalloutMethodBuilder
>   16r1073F0 I FFICalloutMethodBuilder>generate 16r255580: a(n) 
> FFICalloutMethodBuilder
>   16r1030C8 I FFICalloutMethodBuilder>build: 16r255580: a(n) 
> FFICalloutMethodBuilder
>   16r1030F4 I FFICalloutAPI>function:module: 16r255568: a(n) FFICalloutAPI
>   16r10311C I UnixEnvironment(Object)>ffiCall:module: 16r3816180: a(n) 
> UnixEnvironment
>   16r103144 I UnixEnvironment(OSEnvironment)>getEnv: 16r3816180: a(n) 
> UnixEnvironment
>   16r103168 I UnixEnvironment(OSEnvironment)>at:ifAbsent: 16r3816180: a(n) 
> UnixEnvironment
>   16r10318C M [] in MacOSResolver>(nil) 16r241170: a(n) MacOSResolver
>   16r1031A4 M FullBlockClosure(BlockClosure)>on:do: 16r2553F0: a(n) 
> FullBlockClosure
>   16r1031D0 I 
> MacOSResolver(PlatformResolver)>directoryFromEnvVariableNamed:or: 16r241170: 
> a(n) MacOSResolver
>   16r1031F8 I MacOSResolver(PlatformResolver)>directoryFromEnvVariableNamed: 
> 16r241170: a(n) MacOSResolver
>   16r10321C I MacOSResolver>home 16r241170: a(n) MacOSResolver
>   16r10323C I MacOSResolver>userLibrary 16r241170: a(n) MacOSResolver
>   16r103254 M MacOSResolver>userApplicationSupport 16r241170: a(n) 
> MacOSResolver
>   16r10326C M MacOSResolver(FileSystemResolver)>resolve: 16r241170: a(n) 
> MacOSResolver
>   16r103288 M SystemResolver(FileSystemResolver)>unknownOrigin: 16r240D30: 
> a(n) SystemResolver
>   16r1032A4 M SystemResolver(FileSystemResolver)>resolve: 16r240D30: a(n) 
> SystemResolver
>   16r1032C4 M InteractiveResolver>unknownOrigin: 16r240CF0: a(n) 
> InteractiveResolver
>   16r1032E4 M [] in InteractiveResolver>(nil) 16r240CF0: a(n) 
> InteractiveResolver
>   16r103300 M IdentityDictionary(Dictionary)>at:ifAbsent: 16r240D00: a(n) 
> IdentityDictionary
>   16r103320 M InteractiveResolver>resolve: 16r240CF0: a(n) InteractiveResolver
>   16r10333C M FileLocator>resolve 16r255258: a(n) FileLocator
>   16r103354 M FileLocator(AbstractFileReference)>exists 16r255258: a(n) 
> FileLocator
>   16r10337C M [] in PharoFilesOpener>(nil) 16rE79FD8: a(n) PharoFilesOpener
>   16r103398 M [] in PharoFilesOpener>(nil) 16rE79FD8: a(n) PharoFilesOpener
>   16r1033B0 M FullBlockClosure(BlockClosure)>on:do: 16r255190: a(n) 
> FullBlockClosure
>   16r1033D0 M FullBlockClosure(BlockClosure)>ifError: 16r255190: a(n) 
> FullBlockClosure
>   16r1033EC M PharoFilesOpener>ignoreIfFail: 16rE79FD8: a(n) PharoFilesOpener
>   16r102188 M [] in PharoFilesOpener>(nil) 16rE79FD8: a(n) PharoFilesOpener
>   16r1021AC M Array(SequenceableCollection)>do: 16r2495E8: a(n) Array
>   16r1021DC I PharoFilesOpener>openSources:forImage: 16rE79FD8: a(n) 
> PharoFilesOpener
>   16r102204 I PharoFilesOpener>openSources 16rE79FD8: a(n) PharoFilesOpener
>   16r102228 I PharoFilesOpener>sourcesFileOrNil 16rE79FD8: a(n) 
> PharoFilesOpener
>   16r10224C I SourceFileArray>ensureOpen 16r8AA128: a(n) SourceFileArray
>   16r10226C I SmalltalkImage>openSourceFiles 16rA58A28: a(n) SmalltalkImage
>   16r10228C I SmalltalkImage class>startUp: 16rFDA6A8: a(n) SmalltalkImage 
> class
>   16r1022A8 M ClassSessionHandler>startup: 16r8B8978: a(n) ClassSessionHandler
>   16r1022C8 M [] in

Re: [Pharo-dev] Cycles lost on startup

2016-09-05 Thread Nicolai Hess 
2016-09-05 18:37 GMT+02:00 Eliot Miranda :

> Hi All,
>
> we are simulating a full block Pharo image derived from Pharo 6.  On
> startup we see a very sad loss of cycles due to a very slow rebuild of the
> selector table in Symbol class.  Why is this done at each startup?  Here is
> the stack:
>
>   16r107154 M ByteString class(ProtoObject)>identityHash 16r786AE8: a(n)
> ByteString class
>   16r10716C M ByteString class(Object)>hash 16r786AE8: a(n) ByteString
> class
>   16r10718C M ByteSymbol(String)>hash 16rE6A5C8: a(n) ByteSymbol
>   16r1071B0 M WeakSet>scanForEmptySlotFor: 16r26B968: a(n) WeakSet
>   16r1071DC M WeakSet>noCheckNoGrowFillFrom: 16r26B968: a(n) WeakSet
>   16r1071FC M WeakSet>growTo: 16r26B968: a(n) WeakSet
>   16r10721C M WeakSet>grow 16r26B968: a(n) WeakSet
>   16r107234 M WeakSet(HashedCollection)>fullCheck 16r26B968: a(n) WeakSet
>   16r10724C M WeakSet(HashedCollection)>atNewIndex:put: 16r26B968: a(n)
> WeakSet
>   16r107274 M WeakSet>add: 16r26B968: a(n) WeakSet
>   16r107294 M [] in Symbol class>(nil) 16r1D319A8: a(n) Symbol class
>   16r1072B8 M Array(SequenceableCollection)>do: 16r3C17370: a(n) Array
>   16r1072E8 I CompiledMethod class(Behavior)>allInstancesDo: 16r164E260:
> a(n) CompiledMethod class
>   16r10730C I Symbol class>initSelectorTable 16r1D319A8: a(n) Symbol class
>   16r10732C I Symbol class>selectorTable 16r1D319A8: a(n) Symbol class
>   16r107350 I Symbol class>internSelector: 16r1D319A8: a(n) Symbol class
>   16r10737C I CompiledMethod>selector: 16r26AB58: a(n) CompiledMethod
>   16r1073A4 I IRMethod>generate: 16r25A030: a(n) IRMethod
>   16r1073CC I FFICalloutMethodBuilder>generateMethodFromSpec: 16r255580:
> a(n) FFICalloutMethodBuilder
>   16r1073F0 I FFICalloutMethodBuilder>generate 16r255580: a(n)
> FFICalloutMethodBuilder
>   16r1030C8 I FFICalloutMethodBuilder>build: 16r255580: a(n)
> FFICalloutMethodBuilder
>   16r1030F4 I FFICalloutAPI>function:module: 16r255568: a(n) FFICalloutAPI
>   16r10311C I UnixEnvironment(Object)>ffiCall:module: 16r3816180: a(n)
> UnixEnvironment
>   16r103144 I UnixEnvironment(OSEnvironment)>getEnv: 16r3816180: a(n)
> UnixEnvironment
>   16r103168 I UnixEnvironment(OSEnvironment)>at:ifAbsent: 16r3816180:
> a(n) UnixEnvironment
>   16r10318C M [] in MacOSResolver>(nil) 16r241170: a(n) MacOSResolver
>   16r1031A4 M FullBlockClosure(BlockClosure)>on:do: 16r2553F0: a(n)
> FullBlockClosure
>   16r1031D0 I MacOSResolver(PlatformResolver)>
> directoryFromEnvVariableNamed:or: 16r241170: a(n) MacOSResolver
>   16r1031F8 I MacOSResolver(PlatformResolver)>directoryFromEnvVariableNamed:
> 16r241170: a(n) MacOSResolver
>   16r10321C I MacOSResolver>home 16r241170: a(n) MacOSResolver
>   16r10323C I MacOSResolver>userLibrary 16r241170: a(n) MacOSResolver
>   16r103254 M MacOSResolver>userApplicationSupport 16r241170: a(n)
> MacOSResolver
>   16r10326C M MacOSResolver(FileSystemResolver)>resolve: 16r241170: a(n)
> MacOSResolver
>   16r103288 M SystemResolver(FileSystemResolver)>unknownOrigin:
> 16r240D30: a(n) SystemResolver
>   16r1032A4 M SystemResolver(FileSystemResolver)>resolve: 16r240D30: a(n)
> SystemResolver
>   16r1032C4 M InteractiveResolver>unknownOrigin: 16r240CF0: a(n)
> InteractiveResolver
>   16r1032E4 M [] in InteractiveResolver>(nil) 16r240CF0: a(n)
> InteractiveResolver
>   16r103300 M IdentityDictionary(Dictionary)>at:ifAbsent: 16r240D00: a(n)
> IdentityDictionary
>   16r103320 M InteractiveResolver>resolve: 16r240CF0: a(n)
> InteractiveResolver
>   16r10333C M FileLocator>resolve 16r255258: a(n) FileLocator
>   16r103354 M FileLocator(AbstractFileReference)>exists 16r255258: a(n)
> FileLocator
>   16r10337C M [] in PharoFilesOpener>(nil) 16rE79FD8: a(n) PharoFilesOpener
>   16r103398 M [] in PharoFilesOpener>(nil) 16rE79FD8: a(n) PharoFilesOpener
>   16r1033B0 M FullBlockClosure(BlockClosure)>on:do: 16r255190: a(n)
> FullBlockClosure
>   16r1033D0 M FullBlockClosure(BlockClosure)>ifError: 16r255190: a(n)
> FullBlockClosure
>   16r1033EC M PharoFilesOpener>ignoreIfFail: 16rE79FD8: a(n)
> PharoFilesOpener
>   16r102188 M [] in PharoFilesOpener>(nil) 16rE79FD8: a(n) PharoFilesOpener
>   16r1021AC M Array(SequenceableCollection)>do: 16r2495E8: a(n) Array
>   16r1021DC I PharoFilesOpener>openSources:forImage: 16rE79FD8: a(n)
> PharoFilesOpener
>   16r102204 I PharoFilesOpener>openSources 16rE79FD8: a(n) PharoFilesOpener
>   16r102228 I PharoFilesOpener>sourcesFileOrNil 16rE79FD8: a(n)
> PharoFilesOpener
>   16r10224C I SourceFileArray>ensureOpen 16r8AA128: a(n) SourceFileArray
>   16r10226C I SmalltalkImage>openSourceFiles 16rA58A28: a(n) SmalltalkImage
>   16r10228C I SmalltalkImage class>startUp: 16rFDA6A8: a(n) SmalltalkImage
> class
>   16r1022A8 M ClassSessionHandler>startup: 16r8B8978: a(n)
> ClassSessionHandler
>   16r1022C8 M [] in WorkingSession>(nil) 16r1A45D0: a(n) WorkingSession
>   16r1022EC M [] in WorkingSession>(nil) 16r1A45D0: a(n) WorkingSession
>   16r102304 M

[Pharo-dev] Cycles lost on startup

2016-09-05 Thread Eliot Miranda 
Hi All,

we are simulating a full block Pharo image derived from Pharo 6.  On
startup we see a very sad loss of cycles due to a very slow rebuild of the
selector table in Symbol class.  Why is this done at each startup?  Here is
the stack:

  16r107154 M ByteString class(ProtoObject)>identityHash 16r786AE8: a(n)
ByteString class
  16r10716C M ByteString class(Object)>hash 16r786AE8: a(n) ByteString class
  16r10718C M ByteSymbol(String)>hash 16rE6A5C8: a(n) ByteSymbol
  16r1071B0 M WeakSet>scanForEmptySlotFor: 16r26B968: a(n) WeakSet
  16r1071DC M WeakSet>noCheckNoGrowFillFrom: 16r26B968: a(n) WeakSet
  16r1071FC M WeakSet>growTo: 16r26B968: a(n) WeakSet
  16r10721C M WeakSet>grow 16r26B968: a(n) WeakSet
  16r107234 M WeakSet(HashedCollection)>fullCheck 16r26B968: a(n) WeakSet
  16r10724C M WeakSet(HashedCollection)>atNewIndex:put: 16r26B968: a(n)
WeakSet
  16r107274 M WeakSet>add: 16r26B968: a(n) WeakSet
  16r107294 M [] in Symbol class>(nil) 16r1D319A8: a(n) Symbol class
  16r1072B8 M Array(SequenceableCollection)>do: 16r3C17370: a(n) Array
  16r1072E8 I CompiledMethod class(Behavior)>allInstancesDo: 16r164E260:
a(n) CompiledMethod class
  16r10730C I Symbol class>initSelectorTable 16r1D319A8: a(n) Symbol class
  16r10732C I Symbol class>selectorTable 16r1D319A8: a(n) Symbol class
  16r107350 I Symbol class>internSelector: 16r1D319A8: a(n) Symbol class
  16r10737C I CompiledMethod>selector: 16r26AB58: a(n) CompiledMethod
  16r1073A4 I IRMethod>generate: 16r25A030: a(n) IRMethod
  16r1073CC I FFICalloutMethodBuilder>generateMethodFromSpec: 16r255580:
a(n) FFICalloutMethodBuilder
  16r1073F0 I FFICalloutMethodBuilder>generate 16r255580: a(n)
FFICalloutMethodBuilder
  16r1030C8 I FFICalloutMethodBuilder>build: 16r255580: a(n)
FFICalloutMethodBuilder
  16r1030F4 I FFICalloutAPI>function:module: 16r255568: a(n) FFICalloutAPI
  16r10311C I UnixEnvironment(Object)>ffiCall:module: 16r3816180: a(n)
UnixEnvironment
  16r103144 I UnixEnvironment(OSEnvironment)>getEnv: 16r3816180: a(n)
UnixEnvironment
  16r103168 I UnixEnvironment(OSEnvironment)>at:ifAbsent: 16r3816180: a(n)
UnixEnvironment
  16r10318C M [] in MacOSResolver>(nil) 16r241170: a(n) MacOSResolver
  16r1031A4 M FullBlockClosure(BlockClosure)>on:do: 16r2553F0: a(n)
FullBlockClosure
  16r1031D0 I
MacOSResolver(PlatformResolver)>directoryFromEnvVariableNamed:or:
16r241170: a(n) MacOSResolver
  16r1031F8 I
MacOSResolver(PlatformResolver)>directoryFromEnvVariableNamed: 16r241170:
a(n) MacOSResolver
  16r10321C I MacOSResolver>home 16r241170: a(n) MacOSResolver
  16r10323C I MacOSResolver>userLibrary 16r241170: a(n) MacOSResolver
  16r103254 M MacOSResolver>userApplicationSupport 16r241170: a(n)
MacOSResolver
  16r10326C M MacOSResolver(FileSystemResolver)>resolve: 16r241170: a(n)
MacOSResolver
  16r103288 M SystemResolver(FileSystemResolver)>unknownOrigin: 16r240D30:
a(n) SystemResolver
  16r1032A4 M SystemResolver(FileSystemResolver)>resolve: 16r240D30: a(n)
SystemResolver
  16r1032C4 M InteractiveResolver>unknownOrigin: 16r240CF0: a(n)
InteractiveResolver
  16r1032E4 M [] in InteractiveResolver>(nil) 16r240CF0: a(n)
InteractiveResolver
  16r103300 M IdentityDictionary(Dictionary)>at:ifAbsent: 16r240D00: a(n)
IdentityDictionary
  16r103320 M InteractiveResolver>resolve: 16r240CF0: a(n)
InteractiveResolver
  16r10333C M FileLocator>resolve 16r255258: a(n) FileLocator
  16r103354 M FileLocator(AbstractFileReference)>exists 16r255258: a(n)
FileLocator
  16r10337C M [] in PharoFilesOpener>(nil) 16rE79FD8: a(n) PharoFilesOpener
  16r103398 M [] in PharoFilesOpener>(nil) 16rE79FD8: a(n) PharoFilesOpener
  16r1033B0 M FullBlockClosure(BlockClosure)>on:do: 16r255190: a(n)
FullBlockClosure
  16r1033D0 M FullBlockClosure(BlockClosure)>ifError: 16r255190: a(n)
FullBlockClosure
  16r1033EC M PharoFilesOpener>ignoreIfFail: 16rE79FD8: a(n)
PharoFilesOpener
  16r102188 M [] in PharoFilesOpener>(nil) 16rE79FD8: a(n) PharoFilesOpener
  16r1021AC M Array(SequenceableCollection)>do: 16r2495E8: a(n) Array
  16r1021DC I PharoFilesOpener>openSources:forImage: 16rE79FD8: a(n)
PharoFilesOpener
  16r102204 I PharoFilesOpener>openSources 16rE79FD8: a(n) PharoFilesOpener
  16r102228 I PharoFilesOpener>sourcesFileOrNil 16rE79FD8: a(n)
PharoFilesOpener
  16r10224C I SourceFileArray>ensureOpen 16r8AA128: a(n) SourceFileArray
  16r10226C I SmalltalkImage>openSourceFiles 16rA58A28: a(n) SmalltalkImage
  16r10228C I SmalltalkImage class>startUp: 16rFDA6A8: a(n) SmalltalkImage
class
  16r1022A8 M ClassSessionHandler>startup: 16r8B8978: a(n)
ClassSessionHandler
  16r1022C8 M [] in WorkingSession>(nil) 16r1A45D0: a(n) WorkingSession
  16r1022EC M [] in WorkingSession>(nil) 16r1A45D0: a(n) WorkingSession
  16r102304 M FullBlockClosure(BlockClosure)>on:do: 16r245640: a(n)
FullBlockClosure
  16r102328 M [] in WorkingSession>(nil) 16r1A45D0: a(n) WorkingSession
  16r10234C M Array(SequenceableCollection)>do: 16r1A47B8: a(n) Array
  16r102370 I WorkingSession>runList:do: 16r1A45D0: a(n)