BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  FastMM4 - Memory Manager Goto page 1, 2  Next          BorlandTalk.com Forum Index -> Delphi Thirdparty Tools (General) View previous topic :: View next topic   Author Message Mike Williams (TeamB) Guest Posted: Fri Dec 23, 2005 7:04 pm    Post subject: Re: FastMM4 - Memory Manager Andrew Jameson wrote: Quote: Perhaps someone might enlighten me and others about the basics of FastMM4, for example : 1. Is FastMM4 beneficial for all applications ? Yes. Quote: 2. What type of applications would gain most from FastMM4. Applications that make a lot of memory allocations. Quote: For the totally uninitiated, it isn't clear what FastMM4 is all about. Delphi has always had the ability to use a replacement memory manager. A contest was held amongst replacement memory managers and FastMM turned out to be consistently one of the best. Besides performing better than the default Borland manager FastMM has some nice debugging options that you can enable that will detect memory leaks, invalid references, etc. It turned out that this works so well that Borland not only decided to use FastMM as the new default memory manager but also used it with D2006 itself. It improved the performance of Delphi as well as helped Borland track down some IDE errors. You can read more about this in Allen's blog here: http://blogs.borland.com/abauer/archive/2005/09/28/21433.aspx -- -Mike (TeamB) Back to top Andrew Jameson Guest Posted: Fri Dec 23, 2005 7:42 pm    Post subject: FastMM4 - Memory Manager Hi, There's just been a fairly hefty thread on FastMM4 and another thread on speeding up applications. Perhaps someone might enlighten me and others about the basics of FastMM4, for example : 1. Is FastMM4 beneficial for all applications ? 2. What type of applications would gain most from FastMM4. For the totally uninitiated, it isn't clear what FastMM4 is all about. Many thanks Andrew Back to top danny heijl Guest Posted: Fri Dec 23, 2005 8:41 pm    Post subject: Re: FastMM4 - Memory Manager Mike Williams (TeamB) schreef: Quote: Applications that make a lot of memory allocations. FastMM4 is especially useful for multithreaded applications on multi-cpu machines, because it does not serialize allocations like the old memory manager did. This is where you will get huge performance gains (webbroker and websnap in isapi mode are two examples). Danny --- Back to top Andrew Jameson Guest Posted: Fri Dec 23, 2005 11:55 pm    Post subject: Re: FastMM4 - Memory Manager Excellent responses ... many thanks ... I'd already made good use of some of FastMM4's debug functionality ... Andrew Back to top Jens Gruschel Guest Posted: Tue Dec 27, 2005 12:49 pm    Post subject: Re: FastMM4 - Memory Manager Quote: It turned out that this works so well that Borland not only decided to use FastMM as the new default memory manager Can you give more details? I'm still using Delphi 5 mainly, and most of my projects are using FastMM. What I'd like to know is: 1) What Delphi version are you talking about? When did Borland decide to use FastMM as default memory manager? 2) What happens if I compile my Delphi 5 projects, with "uses FastMM4" in the first line of the uses section, with newer versions of Delphi? Is this line just unneccessary or has it any side effects? Jens -- Jens Gruschel http://www.pegtop.net Back to top Danijel Tkalcec [RTC] Guest Posted: Tue Dec 27, 2005 12:51 pm    Post subject: Re: FastMM4 - Memory Manager I did some tests using D2006 with the new Default MM and it performed almost the same as FastMM4 with FastMove. I'd say, if you are using D2006, you can safely remove FastMM4 and FastMove from your "uses" list in the Project file. -- Danijel Tkalcec http://www.deltasoft.hr/rtc/author.htm Back to top Jens Gruschel Guest Posted: Tue Dec 27, 2005 1:14 pm    Post subject: Re: FastMM4 - Memory Manager Quote: I did some tests using D2006 with the new Default MM and it performed almost the same as FastMM4 with FastMove. So the new default MM was/is introduced in Delphi 2006? Quote: I'd say, if you are using D2006, you can safely remove FastMM4 and FastMove from your "uses" list in the Project file. So I better add some {$IFNDEF Delphi2006OrHigher} to the uses clause? Jens -- Jens Gruschel http://www.pegtop.net Back to top Danijel Tkalcec [RTC] Guest Posted: Tue Dec 27, 2005 1:29 pm    Post subject: Re: FastMM4 - Memory Manager "Jens Gruschel" wrote: Quote: I did some tests using D2006 with the new Default MM and it performed almost the same as FastMM4 with FastMove. So the new default MM was/is introduced in Delphi 2006? Yes. Quote: I'd say, if you are using D2006, you can safely remove FastMM4 and FastMove from your "uses" list in the Project file. So I better add some {$IFNDEF Delphi2006OrHigher} to the uses clause? You can keep using FastMM4 and FastMove in D2006 also, it won't do you any harm. But if you decide to move completely to D2006 and don't need to compile your apps in older Delphi versions, you can remove those lines from your projects. If you want to, you can also $IFDEF those lines, it's your decision. I'm only saying that you won't need to use FastMM4 and FastMove for projects which you move to D2006 ) -- Danijel Tkalcec http://www.deltasoft.hr/rtc/author.htm Back to top Liz Guest Posted: Fri Jan 13, 2006 6:11 pm    Post subject: Re: FastMM4 - Memory Manager Jim Culbertson wrote: Quote: Is possible to do leak checks without doing the above? From Borland's FastMM demo program, I do know that if you set the global variable "ReportMemoryLeaksOnShutdown:=true;" (declared in System unit) you will be told of memory leaks, but provided with no information about where they occur. It does list the types, and I believe the logging will give more info on where from -- Liz the Brit Delphi things I have released: http://www.xcalibur.co.uk/DelphiThings Back to top Jim Culbertson Guest Posted: Fri Jan 13, 2006 6:40 pm    Post subject: Re: FastMM4 - Memory Manager Danijel Tkalcec [RTC] wrote: Quote: "Jens Gruschel" wrote: I did some tests using D2006 with the new Default MM and it performed almost the same as FastMM4 with FastMove. So the new default MM was/is introduced in Delphi 2006? Yes. I'd say, if you are using D2006, you can safely remove FastMM4 and FastMove from your "uses" list in the Project file. So I better add some {$IFNDEF Delphi2006OrHigher} to the uses clause? You can keep using FastMM4 and FastMove in D2006 also, it won't do you any harm. But if you decide to move completely to D2006 and don't need to compile your apps in older Delphi versions, you can remove those lines from your projects. If you want to, you can also $IFDEF those lines, it's your decision. I'm only saying that you won't need to use FastMM4 and FastMove for projects which you move to D2006 ) I (a FastMM novice) found no way to do memory leak tests using what Borland includes in D2006. To leak check I had to explicitly add FastMM to the uses statement in my project file and place in my project folder the files: FastMM_FullDebugMode.dll, FastMM4.pas, FastMM4Messages.pas, and FastMM4Options.inc. Is possible to do leak checks without doing the above? From Borland's FastMM demo program, I do know that if you set the global variable "ReportMemoryLeaksOnShutdown:=true;" (declared in System unit) you will be told of memory leaks, but provided with no information about where they occur. Back to top Jim Culbertson Guest Posted: Fri Jan 13, 2006 8:37 pm    Post subject: Re: FastMM4 - Memory Manager Liz wrote: Quote: Jim Culbertson wrote: Is possible to do leak checks without doing the above? From Borland's FastMM demo program, I do know that if you set the global variable "ReportMemoryLeaksOnShutdown:=true;" (declared in System unit) you will be told of memory leaks, but provided with no information about where they occur. It does list the types, and I believe the logging will give more info on where from Sounds reasonable, but how do you get it to log the leak results? Back to top Liz Guest Posted: Fri Jan 13, 2006 9:17 pm    Post subject: Re: FastMM4 - Memory Manager Jim Culbertson wrote: Quote: Sounds reasonable, but how do you get it to log the leak results? Its a setting in that inc file you spoke of -- Liz the Brit Delphi things I have released: http://www.xcalibur.co.uk/DelphiThings Back to top Jim Culbertson Guest Posted: Sun Jan 15, 2006 12:57 am    Post subject: Re: FastMM4 - Memory Manager Liz wrote: Quote: Jim Culbertson wrote: Sounds reasonable, but how do you get it to log the leak results? Its a setting in that inc file you spoke of The FastMM memory manager that Borland supplies with D2006 includes no inc file with which to change memory manager options. The only way I've found to use FastMM to locate memory leaks is to over-ride Borland's version of FastMM with the version of FastMM you can download. Back to top Liz Guest Posted: Sun Jan 15, 2006 8:54 am    Post subject: Re: FastMM4 - Memory Manager Jim Culbertson wrote: Quote: The FastMM memory manager that Borland supplies with D2006 includes no inc file with which to change memory manager options. The only way I've found to use FastMM to locate memory leaks is to over-ride Borland's version of FastMM with the version of FastMM you can download. which is what I did. Hunt down Pierre hes in some of the groups, he can explain how if its possible without this. I believe you can set some props inside your app as it is in the inc file.. and all goes well. -- Liz the Brit Delphi things I have released: http://www.xcalibur.co.uk/DelphiThings Back to top Bill Mogk Guest Posted: Sun Jan 15, 2006 2:17 pm    Post subject: Re: FastMM4 - Memory Manager Jim Culbertson wrote: Quote: Liz wrote: Jim Culbertson wrote: Sounds reasonable, but how do you get it to log the leak results? Its a setting in that inc file you spoke of The FastMM memory manager that Borland supplies with D2006 includes no inc file with which to change memory manager options. The only way I've found to use FastMM to locate memory leaks is to over-ride Borland's version of FastMM with the version of FastMM you can download. Jim, That is correct. I asked Pierre in the ....bdasm group about this. If you look for a recent thread, started by me, he explains why. 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