Problems increasing Java Heap size on server

[srcurtis]

Hi

I'm having trouble increasing the maximum size of the Java heap, at least I think I am.

If I view system info in a client or on a STV, does it show the maximum Java heap on the server or the local client?

If it's the server, as I believe, then for some reason I can't increase it. No matter what I set it to it stays at a maximum of 389MB.

I'm running XP 64-bit with 6GB of RAM and have set the following registry key to try to increase the size of the Java Heap.

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Frey Technologies\SageTV
"JVMMaxHeapSizeMB"=dword:00000800

I've tried setting the key manually and also using the SageTV Registry Tool app.

Whether I set it to 300, 400 or 800 the maximum Java Heap reported by System info is 389 max. Currently showing 315MB/383MB/389MB.

Any help would be much appreciated.

Thanks and Kind Regards

Steve

[nyplayer]

Did you change it in VirtualStore. The best way is to run regedit and do a find on JVMMaxHeapSizeMB till it says it cannot find it. The highest you can go is 400 which is 1024.

[HKEY_CURRENT_USER\Software\Classes\VirtualStore\MACHINE\SOFTWARE\Wow6432Node\Frey Technologies\SageTV]
"JVMMaxHeapSizeMB"=dword:00000400

If using a PC client the Java Heap you see is the PC clients

[srcurtis]

Hi

Thanks for the reply.

I searched the entire registry. The only entry found is the one that I mentioned earlier:

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Frey Technologies\SageTV

I have now changed this back to 400, with no effect.

I do not have any entry, per your example, HKEY_CURRENT_USER\Software\Classes\, i.e. I do not have a VirtualStore entry.

Any other suggestions?

Thanks

Steve

[nyplayer]

Originally Posted by srcurtis

Hi

Thanks for the reply.

I searched the entire registry. The only entry found is the one that I mentioned earlier:

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Frey Technologies\SageTV

I have now changed this back to 400, with no effect.

I do not have any entry, per your example, HKEY_CURRENT_USER\Software\Classes\, i.e. I do not have a VirtualStore entry.

Any other suggestions?

Thanks

Steve

Are you setting this on the Server or the client. If you are setting it on the server you have to check it on the server... make sure you restart it. Then use the Gui and check it. If you are trying to set the java heap on a client then you have to do it on the client PC. You cannot check the Java heap of the server from a remote PC client you can if you are using an extender.

[srcurtis]

Hi

I am checking it on an extender, not a client PC.

I cannot check it on the server itself as I get a Java 1.4 reinstall error when I try to launch it since I did a Java upgrade a couple of weeks ago.

Thanks

Steve

[nyplayer]

Originally Posted by srcurtis

Hi

I am checking it on an extender, not a client PC.

I cannot check it on the server itself as I get a Java 1.4 reinstall error when I try to launch it since I did a Java upgrade a couple of weeks ago.

Thanks

Steve

Well if you are getting the error then you must have updated Java and hosed up the Install. Did you by any chance install Java 7 if you did you have to install the 32 bit Microsoft Visual C. You have a more serious problem then upgrading the heap size. There are threads on how to update to Java 7. See thread below.

http://forums.sagetv.com/forums/show...highlight=java

[srcurtis]

Hi

OK, the JVM error/reinstall prompt was not a problem with Java, rather it was the result of having a JVMMaxHeapSizeMB that exceeded 400h. Changing the only key in my registry (as below) to 400 allowed Sage to run on the server and does indeed report 1024MB of heap.

[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Frey Technologies\SageTV]
"JVMMaxHeapSizeMB"=dword:00000400

HOWEVER, the HD200's still report a maximum heap size of 389MB.

It is intersting though that although the Sage interface failed to launch on the server with a value exceeding 400h, the Sage (service mode) had no problems in starting and I'm therefore wondering if I need a different registry entry to reserve the larger heap for the service mode?

Just for kicks and in an effort not to waste forum users time, I tried adding the following two registry entries per the one you gave me and another found in forum posts:

[HKEY_LOCAL_MACHINE\SOFTWARE\Frey Technologies\SageTV]
"JVMMaxHeapSizeMB"=dword:00000400

[HKEY_CURRENT_USER\SOFTWARE\Classes\VirtualStore\MACHINE\SOFTWARE\Wow6432Node\Frey Technologies\SageTV]
"JVMMaxHeapSizeMB"=dword:00000400

After restarting the server (service mode) and power cycling the HD200's, the HD200's still report a maximum heap size of 389MB.

Any suggestions?

Thanks

Steve

[nyplayer]

Glad it wasn't a Java install problem. I do not know what else to tell you I do not have a HD200 but do have a HD300 and that reports the Java Heap correctly.

[srcurtis]

Hi

OK, I've nearly got to the bottom of it but have not yet solved it. The problem is caused because I do not have the default LocalSystem user start the SageTv service.

I read this thread which started me thinking:

http://forums.sagetv.com/forums/show...7&postcount=87

I run my SageTv Service using a specific user account, sagetvsystem. I tried logging into the PC with the user account that I use to run Sage and apply the key below:

[HKEY_CURRENT_USER\SOFTWARE\Classes\VirtualStore\MACHINE\SOFTWARE\Wow6432Node\Frey Technologies\SageTV]
"JVMMaxHeapSizeMB"=dword:00000400

That automatically created an entries under the following keys:

[HKEY_CLASSES_ROOT\VirtualStore\MACHINE\SOFTWARE\Frey Technologies\SageTV]
"JVMMaxHeapSizeMB"=dword:00000400

[HKEY_CLASSES_ROOT\VirtualStore\MACHINE\SOFTWARE\Wow6432Node\Frey Technologies\SageTV]
"JVMMaxHeapSizeMB"=dword:00000400

[HKEY_CURRENT_USER\Software\Classes\VirtualStore\MACHINE\SOFTWARE\Frey Technologies\SageTV]
"JVMMaxHeapSizeMB"=dword:00000400

[HKEY_CURRENT_USER\Software\Classes\VirtualStore\MACHINE\SOFTWARE\Wow6432Node\Frey Technologies\SageTV]
"JVMMaxHeapSizeMB"=dword:00000400

[HKEY_USERS\S-1-5-21-2503605770-3114097605-959460852-2654\Software\Classes\VirtualStore\MACHINE\SOFTWARE\Frey Technologies\SageTV]
"JVMMaxHeapSizeMB"=dword:00000400

[HKEY_USERS\S-1-5-21-2503605770-3114097605-959460852-2654\Software\Classes\VirtualStore\MACHINE\SOFTWARE\Wow6432Node\Frey Technologies\SageTV]
"JVMMaxHeapSizeMB"=dword:00000400

[HKEY_USERS\S-1-5-21-2503605770-3114097605-959460852-2654_Classes\VirtualStore\MACHINE\SOFTWARE\Frey Technologies\SageTV]
"JVMMaxHeapSizeMB"=dword:00000400

[HKEY_USERS\S-1-5-21-2503605770-3114097605-959460852-2654_Classes\VirtualStore\MACHINE\SOFTWARE\Wow6432Node\Frey Technologies\SageTV]
"JVMMaxHeapSizeMB"=dword:00000400

I then restarted the SageTv service, however this still does NOT solve the problem.

I decided to try running the SageTV service as the default LocalSystem user and as soon as I do this the HD200 reported the increased maximum Java heap size!

Whilst this solved the heap problem, I really need to run the service as someone other than the default system user, so I decided to play further.


I did some digging and found out how to determine which key belongs to which user, basically look in the following section and then reference the home directory to identify the user:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\hivelist

S-1-5-19 = LocalService
S-1-5-20 = NetworkService
S-1-5-21-2503605770-3114097605-959460852-1133 = <my usual user>
S-1-5-21-2503605770-3114097605-959460852-2654 = sagetvservice

I have tied importing the virtual keys into all of these users, but still no luck.

Can anybody shed any light on how to change the heap size for a specific user that starts the SageTv Service?

Thanks

Steve

[BobPhoenix]

Originally Posted by srcurtis

Hi

OK, I've nearly got to the bottom of it but have not yet solved it. The problem is caused because I do not have the default LocalSystem user start the SageTv service.

I read this thread which started me thinking:

http://forums.sagetv.com/forums/show...7&postcount=87

I run my SageTv Service using a specific user account, sagetvsystem. I tried logging into the PC with the user account that I use to run Sage and apply the key below:

[HKEY_CURRENT_USER\SOFTWARE\Classes\VirtualStore\MACHINE\SOFTWARE\Wow6432Node\Frey Technologies\SageTV]
"JVMMaxHeapSizeMB"=dword:00000400

That automatically created an entries under the following keys:

[HKEY_CLASSES_ROOT\VirtualStore\MACHINE\SOFTWARE\Frey Technologies\SageTV]
"JVMMaxHeapSizeMB"=dword:00000400

[HKEY_CLASSES_ROOT\VirtualStore\MACHINE\SOFTWARE\Wow6432Node\Frey Technologies\SageTV]
"JVMMaxHeapSizeMB"=dword:00000400

[HKEY_CURRENT_USER\Software\Classes\VirtualStore\MACHINE\SOFTWARE\Frey Technologies\SageTV]
"JVMMaxHeapSizeMB"=dword:00000400

[HKEY_CURRENT_USER\Software\Classes\VirtualStore\MACHINE\SOFTWARE\Wow6432Node\Frey Technologies\SageTV]
"JVMMaxHeapSizeMB"=dword:00000400

[HKEY_USERS\S-1-5-21-2503605770-3114097605-959460852-2654\Software\Classes\VirtualStore\MACHINE\SOFTWARE\Frey Technologies\SageTV]
"JVMMaxHeapSizeMB"=dword:00000400

[HKEY_USERS\S-1-5-21-2503605770-3114097605-959460852-2654\Software\Classes\VirtualStore\MACHINE\SOFTWARE\Wow6432Node\Frey Technologies\SageTV]
"JVMMaxHeapSizeMB"=dword:00000400

[HKEY_USERS\S-1-5-21-2503605770-3114097605-959460852-2654_Classes\VirtualStore\MACHINE\SOFTWARE\Frey Technologies\SageTV]
"JVMMaxHeapSizeMB"=dword:00000400

[HKEY_USERS\S-1-5-21-2503605770-3114097605-959460852-2654_Classes\VirtualStore\MACHINE\SOFTWARE\Wow6432Node\Frey Technologies\SageTV]
"JVMMaxHeapSizeMB"=dword:00000400

I then restarted the SageTv service, however this still does NOT solve the problem.

I decided to try running the SageTV service as the default LocalSystem user and as soon as I do this the HD200 reported the increased maximum Java heap size!

Whilst this solved the heap problem, I really need to run the service as someone other than the default system user, so I decided to play further.


I did some digging and found out how to determine which key belongs to which user, basically look in the following section and then reference the home directory to identify the user:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\hivelist

S-1-5-19 = LocalService
S-1-5-20 = NetworkService
S-1-5-21-2503605770-3114097605-959460852-1133 = <my usual user>
S-1-5-21-2503605770-3114097605-959460852-2654 = sagetvservice

I have tied importing the virtual keys into all of these users, but still no luck.

Can anybody shed any light on how to change the heap size for a specific user that starts the SageTv Service?

Thanks

Steve

If you turn off UAC then you don't need to worry about a userid. I'm at work and I cannot get to the registry entry currently but it is different as no "virtual store" or userid is in the registry key used.

[srcurtis]

Hi

I'm running XP 64 bit, unless I'm mistaken, XP does not have UAC. At least I can't find it anywhere!

Thanks

Steve

[BobPhoenix]

Originally Posted by srcurtis

Hi

I'm running XP 64 bit, unless I'm mistaken, XP does not have UAC. At least I can't find it anywhere!

Thanks

Steve

Sorry just saw the "Virtual Store" in your post so assumed you were talking about Vista or above. No help here then.

[IVB]

Originally Posted by nyplayer

Did you change it in VirtualStore. The best way is to run regedit and do a find on JVMMaxHeapSizeMB till it says it cannot find it. The highest you can go is 400 which is 1024.

[HKEY_CURRENT_USER\Software\Classes\VirtualStore\MACHINE\SOFTWARE\Wow6432Node\Frey Technologies\SageTV]
"JVMMaxHeapSizeMB"=dword:00000400

If using a PC client the Java Heap you see is the PC clients

Oy, no matter what, I can't get my W7-64b server to go above 365MB. I have 16GB in it, setting JVM... to 300 or 400 has no effect.

Starting to run out of memory as i've expanded my usage of Sage, plus now Gemstone getting loaded.

[IVB]

strange, now one extender reports 779MB.

[m1abrams]

I too am struggling with this exact same issue. I run SageTV as a service as a different user than SYSTEM because I need to access UNC shares.

I have attempted everything the OP has and still can not get SageTV to use more than the default values. Has anyone been able to solve this issue?

[nyplayer]

Originally Posted by m1abrams

I too am struggling with this exact same issue. I run SageTV as a service as a different user than SYSTEM because I need to access UNC shares.

I have attempted everything the OP has and still can not get SageTV to use more than the default values. Has anyone been able to solve this issue?

Run regedit as Administrator very important ... do a find/search for JVMMaxHeapSizeMB in the registry change all Instances to 400. Hex make sure you do a find next till you hit the bottom of the registry.

[m1abrams]

I have change the JVMMaxHeapSizeMB to 400 in every possible place I can find it in the registry and no matter what SageTV running as a service under a SPECIFIC user the memory stays unchanged at 389MB.

One thing I noticed though is that under the HKEY_CLASSES_ROOT path there is not SageTV key under the Frey Tech key. You can not create one either even as admin since this is just a merge of other keys.

[m1abrams]

Ok tried one more thing and it solved my issues. running regedit as Admin, I went to the HKEY_LOCAL_MACHINE\...\Frey Tech.. folder right clicked it and specifically gave the user running SageTV service read access to the key and child keys.

This solved my issue.

[routerunner]

Originally Posted by m1abrams

Ok tried one more thing and it solved my issues. running regedit as Admin, I went to the HKEY_LOCAL_MACHINE\...\Frey Tech.. folder right clicked it and specifically gave the user running SageTV service read access to the key and child keys.

This solved my issue.

Can you please eleborate more on how to give read access to the key and child keys?

[m1abrams]

You just right click the key on the left pane and select either properties or permissions I forget which options you get. Then it is just like setting permissions on files. Add a user and select the users permissions.