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java Programming Glossary: gbJava On-Memory Efficient Key-Value Store http://stackoverflow.com/questions/10064422/java-on-memory-efficient-key-value-store all your data 110 million entries for me takes up 1.32 GB. The bigger you make it in excess of what you need to store.. for 110 million entries with a load factor of 0.5 2.64 GB twice as much space as needed it took on average 403 nanoseconds.. to look up a key but with a load factor of 0.75 1.76 GB a third more space than is needed it took 575 nanoseconds. Decreasing..
alternative to memcached that can persist to disk http://stackoverflow.com/questions/1316852/alternative-to-memcached-that-can-persist-to-disk memcached but still so much better then recalculating 30 GB of data after a single machine went down . This way we get the..
http://stackoverflow.com/questions/1565388/increase-heap-size-in-java java I am working on a Windows 2003 server 64 bit with 8 GB ram. How can I increase the heap memory maximum I am using the.. Can I increase the heap memory to 75 of physical memory 6 GB Heap java heap memory share improve this question You can.. memory share improve this question You can increase to 4GB on a 32 bit system. If you're on a 64 bit system you can go..
Why is it a bad practice to call System.gc? http://stackoverflow.com/questions/2414105/why-is-it-a-bad-practice-to-call-system-gc to force free objects in Java the guy was clearing a 1.5GB HashMap with System.gc I've been told it's a bad practice to.. back. But still 1.5 gigabyte And you know there's like 1.5 GB of data hanging around in memory it's not like it's a shot in..
Increasing the JVM maximum heap size for memory intensive applications http://stackoverflow.com/questions/3030263/increasing-the-jvm-maximum-heap-size-for-memory-intensive-applications a Java memory intensive application that uses more than 2GB but I am having problems to increase the heap maximum size... I've googled it looks like that Xmx must be less than 2GB. Using the XX AggressiveHeap option . When I try this approach.. the heap size is 1273.4 MB even though my computer has 8GB of memory. Is there another approach that I can try to increase..
Format file size as MB, GB etc [duplicate] http://stackoverflow.com/questions/3263892/format-file-size-as-mb-gb-etc file size as MB GB etc duplicate This question already has an answer here How.. new long T G M K 1 final String units new String TB GB MB KB B if value 1 throw new IllegalArgumentException Invalid.. if size 0 return 0 final String units new String B KB MB GB TB int digitGroups int Math.log10 size Math.log10 1024 return..
How to Check available space on android device ? on mini sd card? http://stackoverflow.com/questions/3394765/how-to-check-available-space-on-android-device-on-mini-sd-card on mini sd card How do I check to see how much MB or GB is left on the android device I am using JAVA and android SDK..
How to convert byte size into human readable format in java? http://stackoverflow.com/questions/3758606/how-to-convert-byte-size-into-human-readable-format-in-java MB 6.8 MiB 452984832 453.0 MB 432.0 MiB 28991029248 29.0 GB 27.0 GiB 1855425871872 1.9 TB 1.7 TiB 9223372036854775807 9.2..
Want to know whether enough memory is free on a linux machine to deploy a new application http://stackoverflow.com/questions/3784974/want-to-know-whether-enough-memory-is-free-on-a-linux-machine-to-deploy-a-new-ap 0 HugePages_Free 0 Hugepagesize 2048 kB This is a 16 GB machine and I have a Java application to deploy on this which.. typical memory requirement for them will be close to 1 GB. I wanted to know will it be safe to deploy that application.. reads the second line though there are in fact about 3.9 GB that can be used without forcing active processes to swap. As..
How to read a large text file line by line using Java? http://stackoverflow.com/questions/5868369/how-to-read-a-large-text-file-line-by-line-using-java using Java I need to read a large text file of around 5 6 GB line by line using Java. How can I do this quickly java file..
Is support for compressed Strings being dropped? http://stackoverflow.com/questions/8833385/is-support-for-compressed-strings-being-dropped Java 6 update 29 without compressed strings requires 1.8 GB and with compressed string requires only 1.0 GB. java performance.. 1.8 GB and with compressed string requires only 1.0 GB. java performance jvm java 7 share improve this question..
Tracking down a memory leak / garbage-collection issue in Java. http://stackoverflow.com/questions/1071631/tracking-down-a-memory-leak-garbage-collection-issue-in-java to get Jprofile running. That box is a 64bit quad core 8gb machine running centos 5.2 tomcat6 and java 1.6.0.11. It starts.. advice as to a Why a JVM is using 8 physical gigs and 2 gb of swap space when it is configured to max out at less than.. large that jhat could not anaylze it even on a box with 16gb of ram. Fortunately MAT was able to produce some nice looking..
http://stackoverflow.com/questions/11398762/custom-hashmap-code-issue pairs in my 8 GB server actually I can allocate nearly 5 gb out of 8 gb for my JVM and those two parallel arrays takes nearly.. 8 GB server actually I can allocate nearly 5 gb out of 8 gb for my JVM and those two parallel arrays takes nearly 2.5 gb.. for my JVM and those two parallel arrays takes nearly 2.5 gb other memory are used for various processing of my code . But..
Java webstart max-heap-size causes JVM cannot be started http://stackoverflow.com/questions/3285915/java-webstart-max-heap-size-causes-jvm-cannot-be-started set to 1024m whereas most of the clients PC only have 1 gb physical memory. Set the max heap size back to 512m solved the..
set and disable icons of JToggleButton http://stackoverflow.com/questions/7877576/set-and-disable-icons-of-jtogglebutton public void itemStateChanged ItemEvent e GameButton gb GameButton e.getItem gb.setState Remove a and b from play. private.. ItemEvent e GameButton gb GameButton e.getItem gb.setState Remove a and b from play. private void retirePair GameButton..
Java Large Files Disk IO Performance http://stackoverflow.com/questions/964332/java-large-files-disk-io-performance out three different methods of comparing two identical 3 8 gb files with buffer sizes between 8 kb and 1 MB. the first first..
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