I hereby claim:
- I am luhenry on github.
- I am luhenry (https://keybase.io/luhenry) on keybase.
- I have a public key ASClHVTuQBUNcRSJTwUV9xP2C-5eTD0lif6OFFYHXTNMqgo
To claim this, I am signing this object:
Ludovic Henry luhenry
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| package dev.ludovic.presentation; | |
| import java.util.Random; | |
| public class BenchmarkSupport { | |
| private static final Random rand = new Random(0); | |
| static double[] randomDoubleArray(int n) { | |
| double[] res = new double[n]; |
luhenry
/ gist:6c0240beb82d8f53ea19df5caf2f6072
Created
August 18, 2022 16:35
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| [{"ddsource":"crashtracker","ddtags":"library_version:0.107.0-SNAPSHOT~4dab1e16f,process_id:81658,service:luhenry-experiment,host:COMP-C02DV0W0ML87,runtime-id:9e3fba8a-448e-4ff4-977a-e0edb9a116cf,language:jvm,env:dev","hostname":"COMP-C02DV0W0ML87","message":"#\n# A fatal error has been detected by the Java Runtime Environment:\n#\n# SIGILL (0x4) at pc=0x00007fff207d22aa, pid=30417, tid=259\n#\n# JRE version: OpenJDK Runtime Environment Temurin-17.0.3+7 (17.0.3+7) (build 17.0.3+7)\n# Java VM: OpenJDK 64-Bit Server VM Temurin-17.0.3+7 (17.0.3+7, mixed mode, tiered, compressed oops, compressed class ptrs, parallel gc, bsd-amd64)\n# Problematic frame:\n# C [libsystem_kernel.dylib+0x12aa] mach_msg_trap+0xa\n#\n# No core dump will be written. Core dumps have been disabled. To enable core dumping, try \"ulimit -c unlimited\" before starting Java again\n#\n# If you would like to submit a bug report, please visit:\n# https://github.com/adoptium/adoptium-support/issues\n#\n\n--------------- S U M M A R Y ------- |
luhenry
/ gist:858fe19689272ba5c7fb3c65255c535a
Created
March 2, 2022 13:28
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| # | |
| # A fatal error has been detected by the Java Runtime Environment: | |
| # | |
| # Internal Error (/root/jdk17u/src/hotspot/cpu/x86/frame_x86.cpp:407), pid=88936, tid=89429 | |
| # assert(nm->insts_contains_inclusive(original_pc)) failed: original PC must be in the main code section of the the compiled method (or must be immediately following it) | |
| # | |
| # JRE version: OpenJDK Runtime Environment (17.0.3) (fastdebug build 17.0.3-internal+0-adhoc..jdk17u) | |
| # Java VM: OpenJDK 64-Bit Server VM (fastdebug 17.0.3-internal+0-adhoc..jdk17u, mixed mode, sharing, tiered, compressed oops, compressed class ptrs, parallel gc, linux-amd64) | |
| # Problematic frame: | |
| # V [libjvm.so+0xc0d809] frame::verify_deopt_original_pc(CompiledMethod*, long*)+0xa9 |
luhenry
/ gist:db527fe58098c76f610c2be603a6d88f
Created
March 2, 2022 13:28
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| cat: '/var/datadog/dumps/java-error-prof-analyzer-hotdog-ludovic-99df8d6c-z6p6v_88936.log^C': No such file or directory |
luhenry
/ IntervalBuilder.java
Created
January 28, 2022 13:52
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| import java.nio.file.Paths; | |
| import java.util.*; | |
| import java.util.zip.GZIPOutputStream; | |
| import java.time.*; | |
| import java.io.*; | |
| import jdk.jfr.*; | |
| import jdk.jfr.consumer.*; | |
| class IntervalBuilder { |
luhenry
/ keybase.md
Created
November 26, 2021 09:21
luhenry
/ dd-trace-java.diff
Created
June 8, 2021 13:31
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| diff --git a/dd-trace-core/src/main/java/datadog/trace/core/DDSpan.java b/dd-trace-core/src/main/java/datadog/trace/core/DDSpan.java | |
| index 631425973..fb75d53dc 100644 | |
| --- a/dd-trace-core/src/main/java/datadog/trace/core/DDSpan.java | |
| +++ b/dd-trace-core/src/main/java/datadog/trace/core/DDSpan.java | |
| @@ -16,6 +16,8 @@ import java.util.Map; | |
| import java.util.concurrent.TimeUnit; | |
| import java.util.concurrent.atomic.AtomicLong; | |
| import javax.annotation.Nonnull; | |
| +import jdk.jfr.RecordingContext; | |
| +import jdk.jfr.RecordingContextEntry; |
luhenry
/ docker-rsync-backup
Created
May 10, 2021 07:08
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| docker run --rm -v ~/git:/backup --mount source=git,destination=/workspace,readonly ubuntu bash -cxe 'apt-get update -y; apt-get install -y rsync; rsync -arv /workspace/* /backup' |
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| a.out: main.c | |
| gcc $< -o $@ -ldl | |
| libhijack.so: hijack.c | |
| gcc $< -shared -o $@ | |
| libhelper.so: helper.c | |
| gcc $< -shared -o $@ | |
| run: a.out libhijack.so libhelper.so |
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| [info] OpenJDK 64-Bit Server VM 11.0.11+9-LTS on Linux 5.8.0-50-generic | |
| [info] Intel(R) Xeon(R) E-2276G CPU @ 3.80GHz | |
| [info] | |
| [info] f2jBLAS = dev.ludovic.netlib.blas.NetlibF2jBLAS | |
| [info] javaBLAS = dev.ludovic.netlib.blas.Java11BLAS | |
| [info] nativeBLAS = dev.ludovic.netlib.blas.JNIBLAS | |
| [info] | |
| [info] daxpy: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative | |
| [info] ------------------------------------------------------------------------------------------------------------------------ | |
| [info] f2j 195 201 5 512.9 1.9 1.0X |