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Everything I Ever Learned About JVM Performance Tuning @Twitter- by Attila Szegedi
http://www.infoq.com/presentations/JVM-Performance-Tuning-twitter (video & slides)
  
9 Fallacies of Java Performance - by Ben Evans
http://www.infoq.com/articles/9_Fallacies_Java_Performance (video & slides)
 
Visualizing Java GC - by Ben Evans
http://www.infoq.com/presentations/Visualizing-Java-GC (video & slides)
 
 

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HotSpot Internals Wiki
https://wiki.openjdk.java.net/display/HotSpot/Main

High-level introduction to HotSpot
https://www.infoq.com/articles/Introduction-to-HotSpot

Jvm-Mechanics https://github.com/dougqh/jvm-mechanics.git

Open Heart Surgery: Analyzing and Debugging the Java HotSpot VM at the OS Level (by Volker Simonis, JavaOne 2014)
https://www.youtube.com/watch?v=k7IX_diKCEo

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[An Intro to Apache Spark (w Hadoop) for Plain Old Java Geeks (1 to 7) by Scott Deeg] (https://www.youtube.com/watch?v=nxCm-_GdTl8&list=PL62pIycqXx-TWHeSnpRNiIdQ56dH5ZYut)


Catalyst Query Optimization Framework
* [armbrust-catalyst-a-query-optimization-framework-for-spark-and-shark] (https://spark-summit.org/2013/talk/armbrust-catalyst-a-query-optimization-framework-for-spark-and-shark/)
* [documents] (https://docs.google.com/document/d/1Hc_Ehtr0G8SQUg69cmViZsMi55_Kf3tISD9GPGU5M1Y/edit)

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Nobody Understands REST or HTTP
http://blog.steveklabnik.com/posts/2011-07-03-nobody-understands-rest-or-http


http://blog.philipphauer.de/restful-api-design-best-practices/

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https://github.com/cfenollosa/os-tutorial

https://github.com/cfenollosa/os-tutorial
http://www.cs.bham.ac.uk/%7Eexr/lectures/opsys/10_11/lectures/os-dev.pdf
http://www.cs.bham.ac.uk/~exr/lectures/opsys/10_11/lectures/os-dev.pdf
http://mikeos.sourceforge.net/write-your-own-os.html

http://www.brokenthorn.com/Resources/OSDevIndex.html

http://littleosbook.github.io/

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www.tensorflow.org/tutorials/mnist/beginners/index.md

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System internal working a very good one by Gustavo Duarte
http://duartes.org/gustavo/blog/

Write your own Operating System in 1 hour 
https://www.youtube.com/watch?v=1rnA6wpF0o4

Contains awesome tutorials by AlgorithMan.de (including above link)
https://www.youtube.com/channel/UCQdZltW7bh1ta-_nCH7LWYw

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My custom configuration used for build (jdk8)
./configure --with-target-bits=64 --with-debug-level=slowdebug --disable-debug-symbols --disable-zip-debug-info

For Jdk9, Jdk12
bash ./configure --with-debug-level=slowdebug --with-num-cores=3 --with-native-debug-symbols=internal --with-boot-jdk=/opt/jdk-12.0.2+10


https://skillsmatter.com/skillscasts/6252-what-lies-beneath-a-tour-of-the-dark-gritty-underbelly-of-openjdk

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http://nickdesaulniers.github.io/blog/archives/

Sharing folders (qemu-kvm)
https://ask.fedoraproject.org/en/question/8080/shared-folder-with-qemu-kvm/

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Merging 2 or more mp4 files into merged mp4 format (inputs from avconv, we can't merge mp4 directly, we need to intermediatly convert each into mpeg and then merge them back to mp4).

-i specifies input file
-ss position to start from
-t duration

avconv -ss 00:00:10.000 -i TomAndJerry1950.mp4 -t 00:00:10.000 -vcodec libx264 -acodec aac -f mpegts -bsf h264_mp4toannexb -qscale 1  -strict experimental  -y file1.ts
avconv -ss 00:00:10.000 -i LaurelAndHardy.mp4 -t 00:00:10.000 -vcodec libx264 -acodec aac -f mpegts -bsf h264_mp4toannexb -qscale 1  -strict experimental  -y file2.ts

avconv -i concat:"file1.ts|file2.ts" -c copy -bsf:a aac_adtstoasc -y full.mp4