pt-mysql-summary - Percona

Example: Watch Custom Script
• Watch processlist and collect information when
there are 10 or more processes with
State=statistics
$ cat > purge_not_working.sh
trg_plugin() {
}
Tuesday, December 4, 2012
mysql $EXT_ARGV -E -e "SHOW ENGINE INNODB
STATUS" | grep "^History list length" | awk
'{print $4}'
$ pt-stalk --function purge_not_working.sh
! --threshold 200
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