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Frequently Asked Questions

Will adding more memory increase "virtual memory"?

SpecTek Select - Welcome
No. RAM and virtual memory are not the same. Virtual memory allows you to use a portion of your hard drive as though it were RAM. Because your hard drive is up to 100 times slower than your RAM, virtual memory is much slower than RAM. When you upgrade your RAM, you may discover that you use your virtual memory less because you will now have more memory available to complete the tasks that were previously handled by your virtual memory.

What is Virtual Memory?

Environment settings set by a batch file are not working.
Virtual Memory makes up for the lack of RAM in computers by using space on the hard disk as memory, Virtual Memory. When the actual RAM fills up (actually its before the RAM fills) then virtual memory is created on the hard disk. When physical memory runs out, the Virtual Memory Manager chooses sections of memory that have not been recently used and are of low priority and writes them to the swap file.

How do I increase the memory for the Java Virtual Machine?

SQL Developer - FAQ
Usually the default memory configuration of your VM should be sufficient to work with SQL Developer. If you want to increase the available memoy anyway you will have to start the application with additional command line options. If you use a Sun Microsystem Java VM open a shell window, change to the SQL Developer folder and type java -Xmx256m -jar sqldeveloper.jar to start with a maximum heap memory of 256 MB. The default maximum heap size is 64 MB.

Can adding more LEDs increase the light output?

Innovationhouse.com - Nightstar Frequently ASked Questions
The ETS Cell within NightStar can power more than one LED, and with each LED added, the light output will increase. However, power consumption will also increase with each LED added to the system. Consequently, the duration of light output obtained from a fully charged capacitor will diminish, thereby requiring NightStar to be shaken more frequently. Adding more LEDs will also increase the cost of the device.

How much host memory can Virtual Server 2005 R2 use?

Virtual Server 2005 Frequently Asked Questions
Virtual Server 2005 can use up to 64 GB of memory. Large memory support requires Physical Addressing Extensions (PAE) to be enabled on the host operating system. See the Virtual Server 2005 Administrator's Guide and Virtual Server 2005 Programmer's Guide, which are installed with Virtual Server in the Microsoft Virtual Server Program Group on the Start menu.

Do I need to increase more memory to YSI if I'm running OS-9 on my Mac?

YSI - Frequently Asked Questions
If you are running OS-9, you will need to increase the program's memory usage within the Applications Folder. Open this folder and select the YSI Folder. Press Apple +I together to open the program information folder. In the drop down menu, select memory and type in the required Ram that is sufficent to run both YSI and PhotoShop.

What is a Virtual Memory probe?

NetCraft Communications
The Virtual Memory Usage probe checks amount of Virtual memory being used by a host and will generate alerts if the Virtual memory being used exceeds the thresholds set for this probe.

How can I increase my conventional memory?

Aerowinx FAQ
If PS1.3 cannot be started or if some sounds are cut and clicking, there's not enough "conventional memory" free. Please note that the so-called "conventional memory" has nothing to do with the total RAM available on the computer. It doesn't matter whether there are 64 MB, 128 MB or more RAM available - the "conventional memory" is a separate part of the entire RAM. It's a specific memory block smaller than 1 MB.

How do I increase the memory available to Jalview?

Jalview - FAQ
Full instructions for different operating systems and installations are here. If yours isn't listed, drop us a line at the help address.

How can I increase the memory which NetBeans uses?

jGuru: NetBeans FAQ Home Page
There is a file named 'netbeans.conf' which can be found in <NetBeans_home>\etc\ which you can edit to increase the amount of memory that NetBeans...

Why Does the System Slow to a Crawl When Adding More Memory?

Troubleshooting
This is a common symptom of a failure to cache the additional memory. The exact problem depends on your motherboard. Sometimes you have to enable caching of certain regions in your BIOS setup. Look in the CMOS setup and see if there is an option to cache the new memory area which is currently switched off. This is apparently most common on a '486. Some motherboards don't cache all of the RAM if you have more RAM per amount of cache than the hardware expects.

How can I convert my memory cards from Bleem!/Connectix Virtual Game Station/some other emulator?

Frequently Asked Questions - Emuforums.com
Check out the All in One Memory Card Converter by Aldo. Some other memory card utilities you might be interested in might be PSXGameEdit by Lars Ole Dybdal, and CVGSUtil by DrHell.

How do I use more than 2GB of virtual memory in one process?

Unofficial comp.os.linux.development.* FAQ
The only real solution to your problem is using a 64bit architecture, but there are workarounds that will help you. Normally the 4GB address space is split into 4 equal sized sections for different purposes. The first is used for executable and brk/sbrk allocations. The second is used for mmaps, shared libraries and malloc uses mmap. The third is used for stack, the fourth is used for the kernel itself.

How can I adjust the amount of virtual memory Finder uses?

A/UX FAQ, updated for 21st century
There are three ways to do this. The first is very easy: you simply use the Memory cdev to adjust the "memory" size, logout and then log back in. You must be 'root' to do it this way. The second way is to use the 'TBMEMORY' environment variable. You can set it's "value" equal to the amount of memory you wish to use. For example, TBMEMORY=10m; export TBMEMORY (in .profile for ksh or sh or /etc/profile) or setenv TBMEMORY 10m (in .login for csh) configures Finder for 10M.

Can I completely avoid using virtual memory?

SpecTek Select - Welcome
No. A RAM upgrade reduces the amount that you use your virtual memory, however, you should never set your virtual memory to 0 MB. Virtual memory is slower than RAM, and while it's good to eliminate excessive use of virtual memory, your system must have some virtual memory to achieve optimal performance.
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