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JVM Instances |
jvm_Backend_1(4)
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OS Image Description |
os_1
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Tuning |
- tuned-adm profile=throughput-performance
- ulimit -n 131072
- ulimit -v 800000000
- ulimit -m 800000000
- ulimit -l 800000000
- sysctl net.core.wmem_max=12582912
- sysctl net.core.rmem_max=12582912
- sysctl net.ipv4.tcp_rmem='10240 87380 12582912'
- sysctl net.ipv4.tcp_wmem='10240 87380 12582912'
- sysctl net.core.netdev_max_backlog=655560
- sysctl net.core.somaxconn=32768
- sysctl net.ipv4.tcp_no_metrics_save=1
- echo 10000 > /proc/sys/vm/dirty_expire_centisecs
- echo 1500 > /proc/sys/vm/dirty_writeback_centisecs
- echo 990000 > /proc/sys/kernel/sched_rt_runtime_us
- echo always > /sys/kernel/mm/transparent_hugepage/defrag
- echo 1000 > /proc/sys/kernel/sched_migration_cost_ns
- echo 16 > /proc/sys/kernel/sched_nr_migrate
- systemctl stop systemd-update-utmp-runlevel.service
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Notes |
None
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Parts of Benchmark |
Backend
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JVM Instance Description |
jvm_1
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Command Line |
-showversion -server -Xmx30g -Xms30g -Xmn27g -XX:+UseParallelOldGC -XX:ParallelGCThreads=28 -XX:+UseLargePages -XX:LargePageSizeInBytes=2m -XX:+AlwaysPreTouch -XX:-UseAdaptiveSizePolicy -XX:SurvivorRatio=28 -XX:MaxTenuringThreshold=15 -XX:InlineSmallCode=10k -verbose:gc -XX:+UseRTMLocking -XX:+UseRTMDeopt -XX:UseAVX=0 -XX:-UseCountedLoopSafepoints -XX:LoopUnrollLimit=20 -XX:MaxGCPauseMillis=500 -XX:AdaptiveSizeMajorGCDecayTimeScale=12 -XX:AdaptiveSizeDecrementScaleFactor=2
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Tuning |
None
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Notes |
Used numactl to affinitize each Backend JVM to physical cores in a NUMA node. - numactl --physcpubind=0-13,56-69 --membind=0
- numactl --physcpubind=14-27,70-83 --membind=1
- numactl --physcpubind=28-41,84-97 --membind=2
- numactl --physcpubind=42-55,98-111 --membind=3
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