Graal How to use the new jvm jit compiler in real life
Yüklə 22,34 Mb. Pdf görüntüsü
|
| @ C H R I S T H A L I N G E R G R A A L : H O W T O U S E T H E N E W J V M J I T C O M P I L E R I N R E A L L I F E @ C H R I S T H A L I N G E R # T W I T T E R V M T E A M WHY THI S TALK? The main purpose of my talks is to get people to try Graal Save money, fix bugs, improve Graal
WHY THI S TALK? The main purpose of my talks is to get people to try Graal Save money, fix bugs, improve Graal Also, people come up to me and ask… Is it save to use it? How do I use it? Where do I get it?
WHY THI S TALK? The main purpose of my talks is to get people to try Graal Save money, fix bugs, improve Graal Also, people come up to me and ask… Is it save to use it? How do I use it? Where do I get it? Sometimes they send me emails Mostly complaining about benchmark numbers
WHY THI S TALK? The main purpose of my talks is to get people to try Graal Save money, fix bugs, improve Graal Also, people come up to me and ask… Is it save to use it? How do I use it? Where do I get it? Sometimes they send me emails Mostly complaining about benchmark numbers …and that it SUCKS! @ C H R I S T H A L I N G E R | # T W I T T E R V M T E A M WANNA KNOW M ORE ABOU T SAVIN G MONEY? Lots of details in my talk (available on YouTube): @ C H R I S T H A L I N G E R | # T W I T T E R V M T E A M WHAT IS G RAAL? Java Virtual Machine Just-in-Time (JIT) compiler Actively developed by Oracle Labs http://openjdk.java.net/projects/graal/ https://github.com/oracle/graal Uses JVMCI (JEP 243) Written in Java
WRITTEN IN JAVA!!! @ C H R I S T H A L I N G E R | # T W I T T E R V M T E A M WHERE D O I GE T IT? @ C H R I S T H A L I N G E R | # T W I T T E R V M T E A M WHERE D O I GE T IT? JEP 295: Ahead-of-Time Compilation http://openjdk.java.net/jeps/295
WHERE D O I GE T IT? JEP 295: Ahead-of-Time Compilation http://openjdk.java.net/jeps/295 JEP 317: Experimental Java-Based JIT Compiler http://openjdk.java.net/jeps/317 JDK 10: http://jdk.java.net/10 @ C H R I S T H A L I N G E R | # T W I T T E R V M T E A M Get it demo @ C H R I S T H A L I N G E R | # T W I T T E R V M T E A M https://cloud.oracle.com ABOUT ME… Working on JVMs for over 13 years Sun Microsystems/Oracle HotSpot compiler team JSR 292: Supporting Dynamically Typed Languages on the JavaTM Platform JEP 243: Java-Level JVM Compiler Interface JEP 295: Ahead-of-Time Compilation Twitter VM team @ C H R I S T H A L I N G E R | # T W I T T E R V M T E A M Back to demo @ C H R I S T H A L I N G E R | # T W I T T E R V M T E A M HOW DO I USE IT ? Get a JDK with Graal (jdk.internal.vm.compiler) @ C H R I S T H A L I N G E R | # T W I T T E R V M T E A M HOW DO I USE IT ? Get a JDK with Graal (jdk.internal.vm.compiler) ✅
HOW DO I USE IT ? Get a JDK with Graal (jdk.internal.vm.compiler) ✅ Turn it on! @ C H R I S T H A L I N G E R | # T W I T T E R V M T E A M Use it demo @ C H R I S T H A L I N G E R | # T W I T T E R V M T E A M WHAT IS BOOTST RAP PIN G? Graal is just another Java application running in your JVM @ C H R I S T H A L I N G E R | # T W I T T E R V M T E A M WHAT IS BOOTST RAP PIN G? Graal is just another Java application running in your JVM It loads Java classes
WHAT IS BOOTST RAP PIN G? Graal is just another Java application running in your JVM Has Java methods @ C H R I S T H A L I N G E R | # T W I T T E R V M T E A M WHAT IS BOOTST RAP PIN G? Graal is just another Java application running in your JVM It loads Java classes Has Java methods Which (at some point) need to be compiled, obviously
Bootstrap demo @ C H R I S T H A L I N G E R | # T W I T T E R V M T E A M WHAT WE LE ARNE D Bootstrapping compiles a lot of methods tiered: about 2,500 non-tiered: about 4,800 Either upfront or on-demand during runtime By default on-demand compiles Graal with C1 only @ C H R I S T H A L I N G E R | # T W I T T E R V M T E A M JAVA HEAP U SAGE Graal is… @ C H R I S T H A L I N G E R | # T W I T T E R V M T E A M WRITTEN IN JAVA!!! @ C H R I S T H A L I N G E R | # T W I T T E R V M T E A M JAVA HEAP U SAGE Compiling application methods will use Java heap memory Graal methods possibly too Remember CompileGraalWithC1Only? @ C H R I S T H A L I N G E R | # T W I T T E R V M T E A M Java heap demo @ C H R I S T H A L I N G E R | # T W I T T E R V M T E A M WHAT WE LE ARNE D Graal uses Java heap memory There is no heap isolation (yet) Most memory usage during startup Usually when application isn’t fully up yet Memory is used anyway Either malloc or Java heap
RUNNING BLEE DING E DGE Get Graal from GitHub https://github.com/oracle/graal https://github.com/graalvm/mx @ C H R I S T H A L I N G E R | # T W I T T E R V M T E A M Build Graal demo @ C H R I S T H A L I N G E R | # T W I T T E R V M T E A M RUNNING IN PRODUCTION The bootstrapping overhead is usually negligible Additional time (mostly) disappears in the startup noise Free CPU cores are used for compilation @ C H R I S T H A L I N G E R | # T W I T T E R V M T E A M Production demo @ C H R I S T H A L I N G E R | # T W I T T E R V M T E A M Scala demo @ C H R I S T H A L I N G E R | # T W I T T E R V M T E A M SUMMARY @ C H R I S T H A L I N G E R | # T W I T T E R V M T E A M -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI -XX:+UseJVMCICompiler @ C H R I S T H A L I N G E R | # T W I T T E R V M T E A M @ C H R I S T H A L I N G E R | # T W I T T E R V M T E A M # T W I T T E R V M T E A M Yüklə 22,34 Mb. Dostları ilə paylaş:
|