ABC of Zabbix Performance Tuning
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- Virgil Richards
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1 ABC of Zabbix Performance Tuning Getting most out of your hardware :...
2 What is all about Overview of Zabbix Performance Step 1. Identify & fix common problems Step 2. Tuning of Zabbix Parameters Step 3. Do extra work.:...
3 Overview What's Zabbix performance?..:...
4 Basic data flow GUI Alerter Escalator Poller DATA Database DATA History syncer History syncer Poller Trapper DATA Conf syncer Conf syncer OTHER Trapper DATA Zabbix Server No proxies, not a distributed setup...:...
5 Metrics of Zabbix performance Number of values processed per second (NVPS) A rough estimate of NVPS is visible in Zabbix Dashboard NVPS...:...
6 Performance delivered by Zabbix Hardware: Quad Core CPU, 6GB, RAID10 BBWC Budget: around 2K EUR Zabbix is able to deliver 1 million of values per minute or around of values per second In real life performance would be worse. Why?!...:...
7 Factors making performance lower Type of items, value types, SNMPv3, number of triggers and what the triggers are Housekeeper settings and thus size of the database Number of front-end users Complexity of triggers...:...
8 Slow v.s. Fast What Slow Fast Database size Large Fits into memory Trigger expressions min(),max(),avg() last(), nodata() Data collection Polling (SNMP, Agent-less, Passive agent) Trapping (active agents) Data types Text, string Numeric...:...
9 Performance VS number of hosts 60 items per host, update frequency once per minute Number of hosts Performance (values per second) items per host, update frequency once per minute Number of hosts Performance (values per second) :...
10 Visible symptoms of bad performance Zabbix Queue has too many delayed items Administration->Queue Frequent gaps in graphs, no data for some of the items False positives for triggers having nodata() function Unresponsive front-end...:...
11 Nice looking Queue...:...
12 Identify & fix common problems STEP 1...:...
13 Different views on performance I just added 5 hosts and Zabbix died :-( Zabbix is so slooooow, I have only 48 hosts :-( however: Zabbix Milestone achieved hosts and growing :-) Our status update: 3771 hosts, items, triggers, 2707 vps :-)...:... :-) - Happy! :-( - Unhappy!
14 Common problems of initial setup Use of default templates Make your own smarter templates Default database settings Tune database for the best performance Not optimal configuration of Zabbix Server Tune Zabbix Server configuration Housekeeper Use of older releases Always use the latest one!...:...
15 How do I know database performance is bad? Zabbix Server configuration file, zabbix_server.conf: LogSlowQueries= :...
16 Tune Zabbix Configuration STEP 2...:...
17 Get internal stats Real number of VPS zabbix[wcache, values, all] zabbix[queue,1m] number of items delayed for more than 1 minute Zabbix Server components Alerter, Configuration syncer, DB watchdog, discoverer, escalator, history syncer, http poller, housekeeper, icmp pinger, ipmi poller, poller, trapper...:...
18 Get internal stats Before Zabbix no way to see clearly how well Zabbix components work!...:...
19 Get internal stats Now we have a very nice way of monitoring internal performance Percentage of time a component is in BUSY state zabbix[process,<type>,<mode>,<state>] <type> - trapper, discoverer, escalator, alerter, etc <mode> - avg, count, min, max <state> - busy, idle...:...
![zabbix[process,<type>,<mode>,<state>] <type> - trapper, discoverer,](/docs-images/46/21600317/images/page_19.jpg "escalator, alerter, etc <mode> - avg, count, min, max <state> - busy,")
20 How it looks like A graph indicating a problem...:...
21 Tune number of processes Zabbix Server configuration file, zabbix_server.conf: StartPollers=80 StartPingers=10 StartPollersUnreachable=80 StartIPMIPollers=10 StartTrappers=20 StartDBSyncers=8...:...
22 Do extra work STEP 3...:...
23 Use Proxies Alerter Trapper DATA Escalator Proxy Pollers DATA History syncer Trapper DATA History syncer Trapper Proxy Pollers DATA Conf syncer Conf syncer OTHER Trapper DATA Zabbix Server Proxies do data collection...:...
24 Table partitioning It is a way to split large tables into smaller partitions. Make sense for historical tables: history_*, trends*, events Benefits Easy to remove older data Much better performance...:...
25 No table partitioning Zabbix Server History & GUI...:...
26 With table partitioning Partition 2011_09 Zabbix Partition 2011_08 Server & GUI Partition 2011_07 Partition 2011_06...:...
27 Hey, I tried everything! Performance is still not good. Run all Zabbix components on separate hardware! Zabbix Server Fast CPU 2GB of RAM Database Fast CPU 16GB of RAM Fast storage Zabbix GUI Fast CPU 4GB of RAM...:...
28 Summary Make sure you did everything...:...
29 Check list Zabbix internal statistics is monitored! Otherwise you don't know anything about Zabbix health Zabbix configuration is tuned Database performance is tuned Housekeeper is not used, you use table partitions DisableHousekeeper=1...:..
30 Additional reading MySQL & PostgreSQL Performance Tuning Guides Table partitioning for Zabbix MySQL: zabbixzone.com PostgreSQL: Zabbix Internal Checks ternal_checks...:.
31 Any questions? We are hiring good people! :)...:
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