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Azienda News:
- 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
- java - Difference between -XX:MaxPermSize=size and -XX:MaxMetaspaceSize . . .
What is the difference between -XX:MaxPermSize and -XX:MaxMetaspaceSize options in terms of memory settings? The difference between -XX:MaxPermSize and -XX:MaxMetaspaceSize is largely moot -XX:MaxPermSize was for sizing the old "permanent generation" (PermGen) heap This was removed in Java 8 XX:MaxMetaspaceSize is for sizing the new "Metaspace" off-heap memory space that is used by the JVM
- 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-XX:MaxPermSize=size Sets the maximum permanent generation space size This option was deprecated in JDK 8, and superseded by the -XX:MaxMetaspaceSize option Sizes are expressed in bytes Append the letter k or K to indicate kilobytes, m or M to indicate megabytes, g or G to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?
- 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
- 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
- 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
- jboss - java. lang. OutOfMemoryError: Metaspace - -XX:MaxMetaspaceSize . . .
Since we are getting java lang OutOfMemoryError: Metaspace we have planned to increase the -XX:MaxMetaspaceSize size Question: Currently we are using 6GB of RAM in the Server and if we want to increase the size for -XX:MaxMetaspaceSize, what is the maximum value we can set?
- java - Why should we set -XX:InitialRAMPercentage and -XX . . .
In addition, setting -XX:InitialRAMPercentage and -XX:MaxRAMPercentage may take away some flexibility in the heuristic configuration of the garbage collector, which may mean you have to do more explicit tuning yourself to get the best performance
- linux - JDK 1. 8 -XX:+UseLargePages behavior when theres not enough . . .
I am currently confusing how to optimize using HugePages with JVM applications with Netty, -XX:+UseLargePages option enabled, and using G1Gc Also, I didn't forget to set the same max and min size
- What exactly does -XX:-TieredCompilation do? - Stack Overflow
Using java -XX:+PrintFlagsFinal I found the TieredCompilation flag, and I read about it a bit online Yet, I still don't know exactly what happens when setting it to false I know that the compil
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