Increasing Java Heap on Windows 7 when using local admin

[CarAuto]

First let me start by saying I am new to sagetv.

I have owned it about a month and currently I am running sagetv 7 with a 300 extender. The software is on my desktop machine which is not a dedicated media computer instead it’s the family PC. The OS is windows 7.

My problem is I have followed the tips that I found in the forums on how to make a registry entry to increase Heap size but when I am logged in under myself (local admin) and from my understanding how you are suppose to run in Windows 7 I don’t see the increase in heap size.(looking in system info from sage) If I make the admin account accessible and log into that user and run sage from there I see the increased heap size in the program.

Again this is my family PC so I don’t want to run under full admin but I need to know how to make sage running under the local admin account see the registry entry and jump the size up. I have tried multi reboots but not sure what else to try except uninstalling Sage and reinstalling. Thanks for any advice you might be able to give me.

[JetreL]

Are you running sage as a client or as the service with the client also running?

I would recommend running it as a service and then start the client anytime you want to use the GUI interface. To adjust the Maximum Java Heap Size there is a registry key that you change and there was an application posted here a while back that had most of the registry tweaks built in. Do a search and you should be able to find it.

Other than that the Java Heap Size grows as needed if it's staying pretty low it probably means that you are not needing that much resources. (Java doesn't give the ram back once it has been allocated)

[Smiley]

I was running into the same problem and found a solution by searching through the entire registry.

If you are on a 64 bit machine, look here:

[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Frey Technologies\SageTV]

The key you are looking for is called 'JVMMaxHeapSizeMB'. I've set mine to 400 hex (1024 MB), since I have plenty :-)

[CarAuto]

Thanks for the replies. I was able to run it as a service and this fixed my issue. Thanks again.

[KeithAbbott]

Originally Posted by JetreL

To adjust the Maximum Java Heap Size there is a registry key that you change and there was an application posted here a while back that had most of the registry tweaks built in. Do a search and you should be able to find it.

I think this is the application that JetreL is referring to: http://forums.sagetv.com/forums/down...do=file&id=316

[SomeWhatLost]

just curious, I am running Win 7 x64, I have 8GB of ecc ram (why not? ram is cheap and overkill is wonderful) what is the max you can set the java heap too?

[gplasky]

1.5 GB. java is 32bit. And you need that much contiguous memory free to be able to use it all.

Gerry

[SomeWhatLost]

is it really a full 1.5GB? or is it like 1.49998 or something?
continuous shouldn't be a problem, CQC maybe uses a couple K, Sage itself probably doesn't use all that much either...

[gplasky]

Originally Posted by SomeWhatLost

is it really a full 1.5GB? or is it like 1.49998 or something?
continuous shouldn't be a problem, CQC maybe uses a couple K, Sage itself probably doesn't use all that much either...

It depends where they take the memory from. Just because you may have 2 GB free doesn't mean it is contiguous.

Gerry

[farfromuman]

On my 64bit machine I noticed that I can only run 1GB and still have the client load. The service will work with 1.5GB but the local client will not.

Is this normal?

[Nelbert]

It all depends how windows carves your memory up, what else is running and has grabbed memory. If you have SMM or anything else using SQL Express that's upto another 1Gb of memory in use.
Windows has a habit of grabbing bits in the middle and basically splitting your 8Gb in half. Finding a decent sized contiguous window in that becomes harder, although if your machine is lean and only running sage you might manage to squeeze 2G out of it. But probably no more. It can be done, but usually isn't worth the effort to get a 2G JVM on a windows box.

"java -Xms1.5G -version" using the 32 bit java (from program files X86) and varying the value of 1.5 (how much to allocate initially) will tell you the largest contiguous space currently available. It'll error when you ask for too much. You can also specify the value in M if you prefer.

[parkimar]

Sorry for resurrecting this thread - but Im playing with Colossus on a spare machine and found it running like a slug - even though its more powerful my current sage server - so I had a quick look at system info - and noticed my JVM max size was 389 MB - despite having the reg setting set to give me 1048.

Im running Win 7 64 bit on both machines - here's the JVM size in Sage And the registry setting :-

Anyone know why sage is not seeing the setting ?


Cheers

Mark

[parkimar]

Has anyone else encountered this issue ?

Cheers

Mark

[SimeonPilgrim]

Originally Posted by parkimar

so I had a quick look at system info - and noticed my JVM max size was 389 MB - despite having the reg setting set to give me 1048.

If you have edited the registry, and the SageTV Service is not using the setting, then you might not have edited the registry hive that SageTV service is using.

I not sure why but I had to set my service to use my User Account, to get my HD300 to set the service, thus when I edited my JVM heap size (on Win7 64bit), and restarted the service, it was using the new setting.

[Taddeusz]

On 64-bit it's easier to run \windows\syswow64\regedit.exe to find the correct registry locations for 32-bit programs.

[parkimar]

Thx Taddeusz, I tried that - but it showed as still having the same value (400 Hex) in the registry, but only 389 in Sage.

Is it worth a reinstall ?

Cheers

Mark

[DaveS]

I'm having the same issue in Win7 32 bit. Set it to 756 using the utility in the download section by Babgvant, but in Sage it still shows as 389. I know the utility worked with my XP server. Is there some reason it doesn't work in Win7?

[Taddeusz]

Ok, I've done some testing. I have SageTV Client on my Windows 7 x64 system. I've confirmed that the JVMMaxHeapSizeMB value has no effect. However, when you run SageTV as an administrator (I refuse to turn UAC off) it increases its Java heap size as it's supposed to.

I'm running the beta so I've filed a beta bug report. I suggest everyone who has noticed this problem do the same.

[razrsharpe]

Originally Posted by Taddeusz

Ok, I've done some testing. I have SageTV Client on my Windows 7 x64 system. I've confirmed that the JVMMaxHeapSizeMB value has no effect. However, when you run SageTV as an administrator (I refuse to turn UAC off) it increases its Java heap size as it's supposed to.

I'm running the beta so I've filed a beta bug report. I suggest everyone who has noticed this problem do the same.

UAC is virtualizing the address in the registry so its not a bug with sagetv and when you run regedit with elevated credentials you are looking a different (maybe non virtualized?) address in the registry....

see here for instructions on where to set it when UAC is enabled...

[gplasky]

If you run the utility from babgvant then right click on the utility and choose "Run as Administrator".

Gerry