Hello.
I dont know why i have very high VSZ (virtual memory size) ~ 800-900%, heap 4gb in settings
PID PPID CMD RSS VSZ %MEM %CPU
11554 1 /usr/bin/java -Xms4g -Xmx4g java 4974936 46637680 36.3 0.0
I'm use LXD container with ubuntu 18.04 with limit to resources -- 13gb Ram and 4 core
Elasticsearch version 6.6.0
Configs JVM for Elastic
cat /etc/elasticsearch/jvm.options
-Xms4g
-Xmx4g
-XX:+UseConcMarkSweepGC
-XX:CMSInitiatingOccupancyFraction=75
-XX:+UseCMSInitiatingOccupancyOnly
--Des.networkaddress.cache.ttl=60
-Des.networkaddress.cache.negative.ttl=10
-XX:+AlwaysPreTouch
-Xss1m
-Djava.awt.headless=true
-Dfile.encoding=UTF-8
-Djna.nosys=true
-XX:-OmitStackTraceInFastThrow
-Dio.netty.noUnsafe=true
-Dio.netty.noKeySetOptimization=true
-Dio.netty.recycler.maxCapacityPerThread=0
-Dlog4j.shutdownHookEnabled=false
-Dlog4j2.disable.jmx=true
-Djava.io.tmpdir=${ES_TMPDIR}
-XX:+HeapDumpOnOutOfMemoryError
-XX:HeapDumpPath=/var/lib/elasticsearch
-XX:ErrorFile=/var/log/elasticsearch/hs_err_pid%p.log
8:-XX:+PrintGCDetails
8:-XX:+PrintGCDateStamps
8:-XX:+PrintTenuringDistribution
8:-XX:+PrintGCApplicationStoppedTime
8:-Xloggc:/var/log/elasticsearch/gc.log
8:-XX:+UseGCLogFileRotation
8:-XX:NumberOfGCLogFiles=32
8:-XX:GCLogFileSize=64m
9-:-Xlog:gc*,gc+age=trace,safepoint:file=/var/log/elasticsearch/gc.log:utctime,pid,tags:filecount=32,filesize=64m
9-:-Djava.locale.providers=COMPAT
10-:-XX:UseAVX=2
cat /proc/meminfo
MemTotal: 13671872 kB
MemFree: 4857240 kB
MemAvailable: 6115816 kB
Buffers: 0 kB
Cached: 1258576 kB
SwapCached: 0 kB
Active: 8171968 kB
Inactive: 464476 kB
Active(anon): 7367932 kB
Inactive(anon): 124 kB
Active(file): 804036 kB
Inactive(file): 464352 kB
Unevictable: 0 kB
Mlocked: 33652304 kB
SwapTotal: 0 kB
SwapFree: 0 kB
Dirty: 2772 kB
Writeback: 0 kB
AnonPages: 73933548 kB
Mapped: 3917012 kB
Shmem: 9500 kB
Slab: 0 kB
SReclaimable: 0 kB
SUnreclaim: 0 kB
KernelStack: 125056 kB
PageTables: 288648 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 157965700 kB
Committed_AS: 122171068 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 0 kB
VmallocChunk: 0 kB
HardwareCorrupted: 0 kB
AnonHugePages: 512000 kB
ShmemHugePages: 0 kB
ShmemPmdMapped: 0 kB
CmaTotal: 0 kB
CmaFree: 0 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 2048 kB
DirectMap4k: 2520896 kB
DirectMap2M: 109289472 kB
DirectMap1G: 24117248 kB
cat /proc/sys/vm/overcommit_ratio
120
cat /proc/sys/vm/overcommit_memory
0