couchbase-server-community 4.0.0-4051-1
We have a Couchbase cluster of 21 nodes and around 150 client boxes connect to this cluster. I see some boxes have RAM usage of 91%, while others are using only 66%, is there any way to ensure more distributed usage of RAM. Most of the RAM in all the boxes are being taken by /opt/couchbase/bin/memcached , following are two examples of RAM usage from two extreme boxes:
box with less memory usage:
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
999 4345 62.5 61.9 36074956 33934188 ? Ssl Feb01 27737:28 /opt/couchbase/bin/memcached -C /opt/couchbase/var/lib/couchbase/config/memcached.json
999 4216 52.8 2.4 1840896 1314404 ? Ssl Feb01 23450:08 /opt/couchbase/lib/erlang/erts-5.10.4.0.0.1/bin/beam.smp -A 16 -sbt u -P 327680 -K true -swt low -MMmcs 30 -e102400 -- -root /opt/couchbase/lib/erlang -progname erl -- -home /opt/couchbase -- -smp enable -setcookie nocookie -kernel inet_dist_listen_min 21100 inet_dist_listen_max 21299 error_logger false -sasl sasl_error_logger false -nouser -run child_erlang child_start ns_bootstrap -- -smp enable -couch_ini /opt/couchbase/etc/couchdb/default.ini /opt/couchbase/etc/couchdb/default.d/capi.ini /opt/couchbase/etc/couchdb/default.d/geocouch.ini /opt/couchbase/etc/couchdb/local.ini
999 9920 1.1 0.1 595164 105572 ? Sl Feb01 500:35 /opt/couchbase/bin/indexer -vbuckets=1024 -cluster=127.0.0.1:8091 -adminPort=9100 -scanPort=9101 -httpPort=9102 -streamInitPort=9103 -streamCatchupPort=9104 -streamMaintPort=9105 -storageDir=/storage/1/couchbase/index/@2i
box with high memory usage:
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
999 20812 71.1 85.0 48014804 46535824 ? Ssl 2017 568761:06 /opt/couchbase/bin/memcached -C /opt/couchbase/var/lib/couchbase/config/memcached.json
999 20690 52.8 5.2 3564552 2863852 ? Ssl 2017 422691:18 /opt/couchbase/lib/erlang/erts-5.10.4.0.0.1/bin/beam.smp -A 16 -sbt u -P 327680 -K true -swt low -MMmcs 30 -e102400 -- -root /opt/couchbase/lib/erlang -progname erl -- -home /opt/couchbase -- -smp enable -setcookie nocookie -kernel inet_dist_listen_min 21100 inet_dist_listen_max 21299 error_logger false -sasl sasl_error_logger false -nouser -run child_erlang child_start ns_bootstrap -- -smp enable -couch_ini /opt/couchbase/etc/couchdb/default.ini /opt/couchbase/etc/couchdb/default.d/capi.ini /opt/couchbase/etc/couchdb/default.d/geocouch.ini /opt/couchbase/etc/couchdb/local.ini
999 21421 0.8 0.4 2914624 242084 ? Sl 2017 6439:31 /opt/couchbase/bin/cbq-engine --datastore=http://127.0.0.1:8091 --http=:8093 --configstore=http://127.0.0.1:8091 --enterprise=false
999 21395 4.0 0.4 1063508 223060 ? Sl 2017 32088:04 /opt/couchbase/bin/projector -kvaddrs=127.0.0.1:11210 -adminport=:9999 127.0.0.1:8091