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- How to extract the direct facebook video url - Stack Overflow
I am trying to extract the url for facebook video file page from the facebook video link but I am not able to proceed how For example: The facebook video url I have
- Difference between -XX:+UseParallelGC and -XX:+UseParNewGC
3 Using -XX:+UseParNewGC along with -XX:+UseConcMarkSweepGC, will cause higher pause time for Minor GCs, when compared to -XX:+UseParallelGC This is because, promotion of objects from Young to Old Generation will require running a Best-Fit algorithm (due to old generation fragmentation) to find an address for this object
- Is -XX:+UseG1GC the correct replacement for -Xincgc?
So what's the equivalent replacement for it? -XX:+UseG1GC? Background: The application has a heap of 8GB and creates a lot of short living objects I noticed that it often paused for some seconds to do garbage collection Out of curiosity I added the -Xincgc and found that the pauses were gone and overall performance improved ~4 times
- Difference between Xms and Xmx and XX:MaxPermSize
-XX:MaxPermSize=size Sets the maximum permanent generation space size This option was deprecated in JDK 8, and superseded by the -XX:MaxMetaspaceSize option Sizes are expressed in bytes Append the letter k or K to indicate kilobytes, m or M to indicate megabytes, g or G to indicate gigabytes References: How is the java memory pool divided?
- java - Where dump is dumped, using . . . - Stack Overflow
I found it hard to decipher what is meant by "working directory of the VM" In my example, I was using the Java Service Wrapper program to execute a jar - the dump files were created in the directory where I had placed the wrapper program, e g c:\myapp\bin The reason I discovered this is because the files can be quite large and they filled up the hard drive before I discovered their location
- Regular Expression to validate xx-xxxxxxx or xxx-xx-xxxx
string1 = xxx-xx-xxxx or string1 = xx-xxxxxxx How can I make the regex accept both kinds of values for the same element? The x's represent numbers only so total number of digits = 9 (anything between 0-9) total number of elements in the value is either 11 or 10 depending on which format and total number of dashes is either 2 or 1
- java - How to use -XX:+UnlockDiagnosticVMOptions -XX:CompileCommand . . .
How to use -XX:+UnlockDiagnosticVMOptions -XX:CompileCommand=print option with JVM HotSpot Asked 13 years, 9 months ago Modified 9 years, 2 months ago Viewed 29k times
- Java - shutting down on Out of Memory Error - Stack Overflow
But I suggest you too use -XX:+HeapDumpOnOutOfMemoryError, this way the JVM will create a memory dump file with the content of your application once the event was produced You will use a profiles, I recommend you Eclipse MAT to investigate the image This way you will find pretty quickly what is the cause of the issue, and react properly
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