Running out of memory but no OOM error being thrown

I have a Berkeley JE application running which is doing an initial load with about 30mill records. I'm starting the JVM with a max of 1G of memeory
java -Xmx1024m
However, as I monitor the process (using top on a 4 core 64 bit, 8G mem) I notice that the VIRT value exceeds the heap size. I assume this is from memory needed by the VM itself
Mem: 8175120k total, 7002748k used, 1172372k free, 24464k buffers
Swap: 2031608k total, 1015804k used, 1015804k free, 760124k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1982 crossref 25 10 2030m 737m 12m S 67.8 9.2 2:29.18 java
After running for 10 minutes or so the process consumes more and more memory until the machine starts thrashing swap, eventually the Linux OOM killer comes along and will kill this process (note: my Java code never sees an OOM exception even though the VIRT and RES values displayed in TOP far exceeds the Xmx setting)
After a bit of trial and error I found that using envmnt.evictMemory(); seems to help, I'm calling this function after each 1000 writes to the Berkeley DB.
Any help in understanding any of this behavior would be appreciated.
Thanks
Chuck

My guess is that something else is going on with this process or your system. We don't know of memory leaks in JE, but even if there were it would certainly be a slow leak. I don't recall hearing anything reported that is similar to what you're describing.
I think the reason your JE cache is still so small is that very little JE activity has occurred -- the cache hasn't filled yet.
Sorry this may not be of much help.
--mark

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Hi there
So. I’m running Logic Pro on a Mac Pro and a Mac Book. No problem with it on the Mac Pro, but get this error message every time I open Logic on the Mac Book:
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1, 1 Error: The compiler has run out of memory.
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First of all: I personally agree with your comments regarding the feedback webpage. But that is out of our hands since this is a user-to-user forum, and there is nothing we users can do about it.
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http://helpx.adobe.com/lightroom/kb/performance-hints.html?sdid=KBQWU
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Target has run out of memory on LM3s8962

I'm using the LM3s8962 evaluation kit to record data from the ADC's. I have the system set up so that I use the elemental nodes of the four adc's in a while loop, and replace the values in four different arrays. The arrays are initialize (1x1000 elements) before entering the loop. This works fine.
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Aperture runs out of memory generating previews

Aperture 3.2.3
65K photos in library
OSX 10.7.3
Model Identifier:          MacPro1,1
Processor Name:          Dual-Core Intel Xeon
Processor Speed:          2.66 GHz
Total Number of Cores:          4
L2 Cache (per Processor):          4 MB
Memory:          10 GB
After moving my photoes to an external drive as referenced images, and a library rebuild, Aperture is attempting to recreatea all of my previews. After generateing a couple of hunderd previews, it runs out of memory and I can see the following errors in the system console:
5/11/12 6:03:09.040 PM [0x0-0xfe0fe].com.apple.Aperture: Aperture(37843,0xb071b000) malloc: *** mmap(size=1464881152) failed (error code=12)
5/11/12 6:03:09.040 PM [0x0-0xfe0fe].com.apple.Aperture: *** error: can't allocate region
5/11/12 6:03:09.040 PM [0x0-0xfe0fe].com.apple.Aperture: *** set a breakpoint in malloc_error_break to debug
5/11/12 6:03:09.040 PM [0x0-0xfe0fe].com.apple.Aperture: Aperture(37843,0xb071b000) malloc: *** mmap(size=1464881152) failed (error code=12)
5/11/12 6:03:09.040 PM [0x0-0xfe0fe].com.apple.Aperture: *** error: can't allocate region
5/11/12 6:03:09.040 PM [0x0-0xfe0fe].com.apple.Aperture: *** set a breakpoint in malloc_error_break to debug
5/11/12 6:03:09.041 PM [0x0-0xfe0fe].com.apple.Aperture: Aperture(37843,0xb071b000) malloc: *** mmap(size=1464881152) failed (error code=12)
5/11/12 6:03:09.041 PM [0x0-0xfe0fe].com.apple.Aperture: *** error: can't allocate region
5/11/12 6:03:09.041 PM [0x0-0xfe0fe].com.apple.Aperture: *** set a breakpoint in malloc_error_break to debug
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Are Previews being generated as you import, or later? I am asking because I can identify with memory issues when editing numerous images from my D800 in succession (which are huge), but i am not seeing it while importing.
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System hanging when it runs out of memory

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Alright, you won, now quit pointing out my ignorance
Your awkish oom killer is a lot cooler than mine, switching to it, thanks!
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Ah yes, good old Project Manager. There are plenty of times when it causes more problems than it solves.
You might try deleting the following folder:
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Lightroom 1.1 still running out of memory

Last night I downloaded Lightroom 1.1. Unfortunately, it's still running out of memory. Interestingly, the out of memory message was upside down. Task Manager was reporting that LR was using 1.8GB. My machine has 4GB, so I'm not sure what the problem was.
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32bit apps usually can only access 2Gb of memory. Their address space is 2Gb. There are techniques that allow 32bit apps to access more than 2Gb of memory, known as AWE, but I seriously doubt Lr has something like that.
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Running out of memory but no OOM error being thrown

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