# Increasing Memory and Swap usage until full **URL:** \ **Category:** Percona XtraDB Cluster 5.x\ **Created:** [May 17, 2017, 10:48am UTC](https://forums.percona.com/t/increasing-memory-and-swap-usage-until-full/5613 "2017-05-17T10:48:47Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![doshu](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/doshu/32/1169_2.png) [@doshu](https://forums.percona.com/u/doshu)\ **Post date:** [May 17, 2017, 10:48am UTC](https://forums.percona.com/t/increasing-memory-and-swap-usage-until-full/5613/1 "2017-05-17T10:48:47Z")
Hi, i have a 3 node percona xtradb cluster, server version 5.7.17-13-57-log, based on debian 8 each machine has 10GB ram and 10 virtual cpu of the host hyperv each node has this my.cnf with only required value changed # # The MySQL database server configuration file. # # You can copy this to one of: # - “/etc/mysql/my.cnf” to set global options, # - “~/.my.cnf” to set user-specific options. # # One can use all long options that the program supports. # Run program with --help to get a list of available options and with # –print-defaults to see which it would actually understand and use. # # For explanations see # [http://dev.mysql.com/doc/mysql/en/server-system-variables.html](http://dev.mysql.com/doc/mysql/en/server-system-variables.html) # This will be passed to all mysql clients # It has been reported that passwords should be enclosed with ticks/quotes # escpecially if they contain “#” chars… # Remember to edit /etc/mysql/debian.cnf when changing the socket location. [client] port = 3306 socket = /var/run/mysqld/mysqld.sock # Here is entries for some specific programs # The following values assume you have at least 32M ram # This was formally known as [safe\_mysqld]. Both versions are currently parsed. [mysqld\_safe] socket = /var/run/mysqld/mysqld.sock nice = 0 [mysqld] skip-name-resolve performance\_schema=OFF # # \* Basic Settings # user = mysql pid-file = /var/run/mysqld/mysqld.pid socket = /var/run/mysqld/mysqld.sock port = 3306 basedir = /usr datadir = /var/lib/mysql/data tmpdir = /tmp lc-messages-dir = /usr/share/mysql skip-external-locking # # Instead of skip-networking the default is now to listen only on # localhost which is more compatible and is not less secure. bind-address = 0.0.0.0 # # \* Fine Tuning # #key\_buffer = 16M max\_allowed\_packet = 16M thread\_stack = 192K thread\_cache\_size = 50 # This replaces the startup script and checks MyISAM tables if needed # the first time they are touched #myisam-recover = BACKUP max\_connections = 500 #table\_cache = 64 #thread\_concurrency = 10 # # \* Query Cache Configuration # query\_cache\_limit = 1M #query\_cache\_size = 16M # # \* Logging and Replication # # Both location gets rotated by the cronjob. # Be aware that this log type is a performance killer. # As of 5.1 you can enable the log at runtime! #general\_log\_file = /var/log/mysql/mysql.log #general\_log = 1 # # Error log - should be very few entries. # log\_error = /var/log/mysql/error.log # # Here you can see queries with especially long duration slow\_query\_log\_file = /var/log/mysql/mysql-slow.log slow\_query\_log = 1 long\_query\_time = 120 #log\_queries\_not\_using\_indexes # # The following can be used as easy to replay backup logs or for replication. # note: if you are setting up a replication slave, see README.Debian about # other settings you may need to change. #server-id = 1 #log\_bin = /var/log/mysql/mysql-bin.log expire\_logs\_days = 10 max\_binlog\_size = 100M #binlog\_do\_db = include\_database\_name #binlog\_ignore\_db = include\_database\_name # # \* InnoDB # # InnoDB is enabled by default with a 10MB datafile in /var/lib/mysql/. # Read the manual for more InnoDB related options. There are many! # # \* Security Features # # Read the manual, too, if you want chroot! # chroot = /var/lib/mysql/ # # For generating SSL certificates I recommend the OpenSSL GUI “tinyca”. # # ssl-ca=/etc/mysql/cacert.pem # ssl-cert=/etc/mysql/server-cert.pem # ssl-key=/etc/mysql/server-key.pem #path to galera library wsrep\_provider=/usr/lib/libgalera\_smm.so wsrep\_provider\_options=“gcache.size=30G” #cluster connection url wsrep\_cluster\_address=gcomm://easycluster1,easycluster2,easycluster3 wsrep\_node\_address=easycluster3 #metodo di sst wsrep\_sst\_method=xtrabackup-v2 binlog\_format=ROW default\_storage\_engine=InnoDB innodb\_log\_file\_size=4G #InnoDB autoincrement locks mode (Galera requires it to be 2) innodb\_autoinc\_lock\_mode=2 innodb\_file\_per\_table=1 lower\_case\_table\_names=1 #cluster name wsrep\_cluster\_name=easyprofit\_cluster #authentication for sst method wsrep\_sst\_auth=“sstuser:s3cretPass” #tuning innodb\_flush\_method=O\_DIRECT innodb\_sort\_buffer\_size=64M max\_heap\_table\_size=64M tmp\_table\_size=64M wsrep\_slave\_threads=4 sort-buffer-size=64M query-cache-type=0 query-cache-size=0 open-files-limit=65535 table-definition-cache=1024 table-open-cache=2048 innodb-buffer-pool-size=4G [mysqldump] quick quote-names max\_allowed\_packet = 16M [mysql] #no-auto-rehash # faster start of mysql but no tab completition [isamchk] #key\_buffer = 16M # # \* IMPORTANT: Additional settings that can override those from this file! # The files must end with ‘.cnf’, otherwise they’ll be ignored. # !includedir /etc/mysql/conf.d/ when each node is started, even if there are no activity from any client, the use of the memory increase slowly. when all 10 GB of memory is full, the swap usage begin increase until filled too. the swap is 14 GB. when the memory and swap are filled, the OOM kill mysql process If i give each machine other 5GB of memory, even that additional 5GB are used, without sense i have already tried to limit caches or buffers, or opened tables/files but without success. someone has the same problem? ![photoid=48463](https://us1.discourse-cdn.com/flex019/uploads/percona1/original/2X/7/7595945fa136571fa91e3b33c52f029403687f09.jpeg)