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Error java.lang.OutOfMemoryError: GC overhead limit exceeded
...percent application time and 10 percent garbage collection time
Apart from setting heap memory with -Xms1g -Xmx2g , try
-XX:+UseG1GC -XX:G1HeapRegionSize=n -XX:MaxGCPauseMillis=m
-XX:ParallelGCThreads=n -XX:ConcGCThreads=n
Have a look at some more related questions regarding G1GC
Java 7 (JDK...
VIM Disable Automatic Newline At End Of File
...ferably on your .vimrc) (thanks to 罗泽轩 for that last bit of news!):
:set nofixendofline
Now regarding older versions of vim.
Even if the file was already saved with new lines at the end:
vim -b file
and once in vim:
:set noeol
:wq
done.
alternatively you can open files in vim with :e ++bin f...
Find location of a removable SD card
...aths, or null if not found.
*
* @param includePrimaryExternalStorage set to true if you wish to also include the path of the primary external storage
*/
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public static List<String> getSdCardPaths(final Context context, final boolean include...
Tablet or Phone - Android
...values/screen.xml (assuming res/layout/ contains your layout files for handsets)
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="screen_type">phone</string>
</resources>
File res/values-sw600dp/screen.xml (assuming res/layout-sw600dp/ contains you...
How to get the Power of some Integer in Swift language?
...I expected because the precedence was off. For an exponentiative operator, set precedence to 160 (see developer.apple.com/library/ios/documentation/Swift/Conceptual/… and developer.apple.com/library/ios/documentation/Swift/Conceptual/…) like so: infix operator ^^ { precedence 160 } func ^^... an...
ASP.NET MVC - Attaching an entity of type 'MODELNAME' failed because another entity of the same type
... state of one entry to 'Modified'. Before changing the state, the state is set to 'Detached' but calling Attach() does throw the same error. I'm using EF6.
...
Why is std::map implemented as a red-black tree?
... tables with unordered_map. You can see from the documentation it requires setting policies to configure many of these options.)
What about other trees?
Red Black trees offer fast lookup and are self balancing, unlike BSTs. Another user pointed out its advantages over the self-balancing AVL tree. ...
How to clone a case class instance and change just one field in Scala?
...case class Persona(
svcName : String,
svcId : String,
sentMsgs : Set[String]
) {
def plusMsg(msg: String) = this.copy(sentMsgs = this.sentMsgs + msg)
}
then
val newPersona = existingPersona plusMsg newMsg
sha...
Summarizing multiple columns with dplyr? [duplicate]
...rget about data.table (use keyby to sort sort groups):
library(data.table)
setDT(df)[, lapply(.SD, mean), keyby = grp]
#> grp a b c d
#> 1: 1 3.079412 2.979412 2.979412 2.914706
#> 2: 2 3.029126 3.038835 2.967638 2.873786
#> 3: 3 2.854701 2.948718 2.9...
How to check if an NSDictionary or NSMutableDictionary contains a key?
...
Checking a dictionary(or set) for the existence of a key is expected O(1) with a worst case of O(n). Not O(log(n)). Apple's documentation clearly explains this.
– Andrew Hoos
Aug 12 '14 at 15:58
...