Do you restart JIRA e.g. once a week? Is it recomended in order to speed it up? Some users using JIRA very intensively are requesting this, realising that the system is slowing down after a certain time….
VERSION: JIRA 6.3
TRICK 1: The performance increases dramatically if you use Java8 instead of Java7!!
JVM MEMORY SIZING GUIDE: https://confluence.atlassian.com/display/ENTERPRISE/JIRA+Sizing+Guide
TRICK 2: We made a setting for JVM_MIN_MEMORY and JVM_MAX_MEMORY properties present in <JIRA-INSTALLATION-DIRECTORY>/bin/setenv.sh when we faced JIRA slowness. By changing to 1/4 and 1/2 of your RAM Size might increase JIRA Performance.