Podcast
Questions and Answers
What is the default size of the trend cache in Zabbix server?
What is the default size of the trend cache in Zabbix server?
When does the Zabbix server flush trends into the database?
When does the Zabbix server flush trends into the database?
What is the purpose of the value cache in Zabbix server?
What is the purpose of the value cache in Zabbix server?
What triggers the replacement of existing trend calculation in the database by new trend calculation?
What triggers the replacement of existing trend calculation in the database by new trend calculation?
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What is the default size of the trend function cache in Zabbix server?
What is the default size of the trend function cache in Zabbix server?
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What is the shared memory size for caching calculated trend function data?
What is the shared memory size for caching calculated trend function data?
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On a large installation, when is it recommended to stop the Zabbix server if a restart is needed?
On a large installation, when is it recommended to stop the Zabbix server if a restart is needed?
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What is the purpose of the trend cache in Zabbix server?
What is the purpose of the trend cache in Zabbix server?
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What is the purpose of the trend function cache in Zabbix server?
What is the purpose of the trend function cache in Zabbix server?
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What is the default size of the value cache in Zabbix server?
What is the default size of the value cache in Zabbix server?
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What is the recommended percentage of total RAM for the innodb_buffer_pool_size in the sample MySQL configuration?
What is the recommended percentage of total RAM for the innodb_buffer_pool_size in the sample MySQL configuration?
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What is the trigger condition for Zabbix housekeeper processes causing performance degradation?
What is the trigger condition for Zabbix housekeeper processes causing performance degradation?
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What is the main benefit of table partitioning in Zabbix?
What is the main benefit of table partitioning in Zabbix?
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What is the recommended frequency of partition creation for current data in Zabbix table partitioning?
What is the recommended frequency of partition creation for current data in Zabbix table partitioning?
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What is the impact of not creating partitions for current data in Zabbix table partitioning?
What is the impact of not creating partitions for current data in Zabbix table partitioning?
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Which command-line utility is recommended for debugging Zabbix performance issues?
Which command-line utility is recommended for debugging Zabbix performance issues?
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What is the threshold for a database query to be logged as a slow query in Zabbix server configuration?
What is the threshold for a database query to be logged as a slow query in Zabbix server configuration?
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Which log file is recommended to be checked for 'slow query' lines during Zabbix performance issues?
Which log file is recommended to be checked for 'slow query' lines during Zabbix performance issues?
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What is the recommended duration before a database query is logged as a slow query in Zabbix server configuration?
What is the recommended duration before a database query is logged as a slow query in Zabbix server configuration?
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What is the impact of slow queries on a database in Zabbix?
What is the impact of slow queries on a database in Zabbix?
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What parameter controls the cache size in the Zabbix server configuration file?
What parameter controls the cache size in the Zabbix server configuration file?
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When the Value cache is full, what mode does Zabbix start working in?
When the Value cache is full, what mode does Zabbix start working in?
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Which of the following is not a data collector in Zabbix?
Which of the following is not a data collector in Zabbix?
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Which process in Zabbix is responsible for specific tasks related to data storage and maintenance?
Which process in Zabbix is responsible for specific tasks related to data storage and maintenance?
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What does the sample Zabbix server configuration file provide?
What does the sample Zabbix server configuration file provide?
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What significantly affects Zabbix performance, as all collected data must be written into it?
What significantly affects Zabbix performance, as all collected data must be written into it?
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What is emphasized for optimizing MySQL database performance in Zabbix?
What is emphasized for optimizing MySQL database performance in Zabbix?
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Which Zabbix process is responsible for problem suppression?
Which Zabbix process is responsible for problem suppression?
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What type of poller is not mentioned as a data collector in Zabbix?
What type of poller is not mentioned as a data collector in Zabbix?
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What does Zabbix start working in when the Value cache is full?
What does Zabbix start working in when the Value cache is full?
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Study Notes
Zabbix Server Performance Metrics and Tuning
- Zabbix server has performance metrics such as cache hits and misses, with the cache size controlled by the ValueCacheSize parameter in the Zabbix server configuration file.
- When the Value cache is full, Zabbix starts working in low memory mode, making internal monitoring and direct DB queries, which can degrade overall performance.
- Data collectors in Zabbix include pollers for passive and active checks, trappers, ICMP pingers, history pollers, ODBC pollers, HTTP pollers, Java pollers, proxy pollers, and discoverers.
- Internal processes in Zabbix involve history syncers, configuration syncers, housekeepers, and timers, each responsible for specific tasks related to data storage, configuration, maintenance, and problem suppression.
- A sample Zabbix server configuration file is provided, with tuning examples for processes and in-memory cache sizes.
- A data collection diagram illustrates the various data collectors, internal processes, and caches in Zabbix.
- Practical setup instructions are provided, including testing configuration cache size, linking templates, and changing item update intervals.
- Database performance significantly affects Zabbix performance, as all collected data must be written into the database, and various Zabbix processes access the database directly.
- MySQL tips for optimizing database performance are provided, emphasizing the importance of minimal tuning and using the latest stable version for significant performance improvements.
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Description
Test your knowledge of Zabbix server performance metrics and tuning with this quiz. Explore cache size control, data collectors, internal processes, practical setup instructions, and database performance optimization tips to enhance Zabbix server performance.
