Zabbix history cache size # # Mandatory: no # Range: 128K-2G # Default: TrendCacheSize=32M ### Option: TrendFunctionCacheSize # Size of Ok, well, things changed a bit last night. I modify zabbix_server. This period can be customised by configuration parameter CacheUpdateFrequency. Server fails to start when CacheSize is configured for Zabbix server generates configuration cache, mostly containing information on hosts and items to be monitored. 5 has the cache setting at the default. I really like Zabbix, but now I cannot use it as a primary oversight system, because it shows nonsenses (ZBX is overloaded and cannot process data to MariaDB). 3 take care every foreign key child is indexed; effective_cache_size gives the database an idea how much pages might be located in filesystem buffer. By Arturs Lontons November 18, 2021 Zabbix allows its users to configure custom data retention periods for different types of data – from history and trend storage periods to user session storage periods. Zabbix internal: zabbix[wcache,index,pused] Trend write cache, % used: 1748484 /usr/sbin/zabbix_server: history syncer #2 [processed 543 values, 435 triggers in 0. 340 One child process died (PID:1886). HostnameItem: The item used for setting Hostname if it is undefined. 0 for performance issue Before changing innodb_log_file_size and/or innodb_log_files_in_group read this: https://bit. v3. # Shared memory size for storing character, text or log history data. The are stored as long as the history storage period is defined. Whereas history keeps each collected value, trends keep averaged information on hourly basis and therefore are less resource-hungry. # Cache thread_cache_size = 64 table_open_cache = 256 query_cache_size = 64M query_cache_limit = 1M query_cache_type = 1 tmp_table_size = 32M Good day all We have a VM running a Zabbix 5. Then we met elasticsearch solution. 14. medium Zabbix FrontEnd: Amazon Linux AMI - m3. Does anybody know, when v3. The housekeeping then removes these values from the history tables when it is running. # Shared memory size for caching item history data requests. 879 ***** Enabled features ***** 5565:20170704:095602. Now I ran into a problem that Zabbix Server has shut down and is unable to start again due to the known "__zbx_mem_reallo Hello! I have problem figuring out what's causing the Zabbix server to report the problem: More than 75% used in the configuration cache. Still not working. 2 deployment with the official compose file: docker-compose_v3_ubuntu_pgsql_latest. Last week I have installed zabbix 3. Can anyone recommend me? # Size of history cache, in bytes. x86_64 Return of zabbix_server -R diaginfo == history cache diagnostic information == Items:0 values:0 time:0. The first line created a new table named "history_new", with the exact same layout as as the existing "history" table, but without any data in it. It even starts with negative percentage values. So no matter what the setting is 4MB or 8GB the percentage stays at 15%. 789 [file:vmware. At first it was doing well, then we added templates and hosts and set housekeeper, and IO overload problems begun to start. Filter. thread_cache_size = 128 sort_buffer_size = 4M bulk_insert_buffer_size = 16M tmp_table_size = 32M max_heap_table_size = 32M myisam_recover_options = BACKUP key I'm having a problem where my history syncer processes are going to 100% and random times. If my Zabbix server conf file has ValueCacheSize disabled/commented out, what is the default value for the VaultCacheSize? I ask because I am getting an alert now that I am using 95% of the Value Cache and it suggests increasing the value in the server conf. used: Size of used history index history buffer. # # Mandatory: no # Range: 128K-2G # Default: # HistoryIndexCacheSize=4M HistoryIndexCacheSize=200M Zabbix value cache operating mode (zabbix:zabbix[vcache,cache,mode]): Normal (0) So back to normal. Index cache is supported since Zabbix 3. I installed zabbix on a rather not very fast server (by terms of IO) with Postgres as the backend DB. It could be for example some log* item(s) with update interval 5 minutes. Closed; Activity. centos. 879 Starting Zabbix Server. We currently monitor about 33k metrics through half a dozen proxies. 10. Zabbix is Open Source and comes at no cost. Parameters: mode: total - the total size of buffer (can be used to check if memory buffer is enabled); free - the size of free buffer; The trend cache parameter is not supported with Zabbix proxy. Our cache is 2gb in size now and reading, it seems that is quite high. 7 (revision 56694). Shared memory size for caching item history data requests. Changing the CacheSize in zabbix-proxy. autovacuum_naptime is balanced according to total vacuum time. I found ZBX_CACHESIZE=8M in env_vars/. Or there is some memory leak in cache or internal items can't correctly read the cache capacity. Since this time, we made tuning for tcp connections, tuning in the OS (CentOS 6. Assignee: Unassigned Reporter: Alexey Pustovalov Votes: 0 Vote for this issue Watchers: Zabbix Performance (history syncer 100%) 21-05-2019, 15:37. data: size: free:672386656 used:984689904 chunks: free:227458 used:30422962 min:24 max:1241344 buckets: # # Mandatory: no # Range: 128K-2G # Default: # TrendCacheSize=4M ### Option: HistoryTextCacheSize # Size of text history cache, in bytes. Need to increase the option. 969925 Problem started: 2011. 0 In Zabbix, “trends” are a type of data storage representing aggregated historical data. The shared memory size for caching item history data requests. X. But, somehow it kept at 1,38% free trend cache and the server was polling all night without any noticeable problems. This in from my understanding of the CacheSize parameter, i would expect the max. To start viewing messages, select the forum that you want to visit from the selection below. x86_64) runing on a VM (Vmware). 3 Mysql 5. 1884:20110305:082132. Include About a mont ago, due to company decision, we moved our zabbix server enviroment to Amazon AWS. # Shared memory size for indexing history cache. el7. 4 on Ubuntu 16. conf, specifically the configuration cache which is simply 'CacheSize' in the config file. You can set for how many days history will be kept: in the item properties form; when mass The order that datacare did stuff is correct. 2. The cache size itself may be set with configuration parameter CacheSize and by default is 8MB. The odd thing is that we have increased the configuration cache size to its max size(8GB) and the message has not gone away. # ProxyConfigFrequency=3600 ### Option: ProxyDataFrequency # How often Zabbix Server requests history data from a Zabbix Proxy in We tried bumping up the cache sizes, different poller starter counts. i also cleaned up this table but the problem persists. -----Our scenraio is : Zabbix Server AWS Site Zabbix Server: Amazon Linux AMI - m3. All Time Today Last Week Last Month. Linked Applications. Also restarting the proxy If your history cache is filling up then likely because of History Syncers not being able to catch up. We have slowly increased our value cache, but keep getting warnings and going into low memory mode. Please increase CacheSize parameter. Previously, with the 8GB cachesize, we were getting a zabbix server crash every 10-15 days (2-3 days with cachesize previously set to 4GB). Login or Sign Up Less than 20% free in the history cache: PROBLEM Last value: 10. 1- Preserve zabbix history cache greedily, maintain it using a variation of LRU (less recent item value misses, more immune to IO bottlenecks) Size of history cache, in bytes. # Shared memory size for caching calculated trend function data. But, no Zabbix server: Utilization of history syncer processes over 75% On Zabbix 6. Collapse. After I saw it drop again and I posted my last reply I went to bed. HousekeepingFrequency: How often Zabbix will perform the housekeeping procedure in hours. The problem arises when the history cache reaches 100%, then the server needs to be rebooted. 4 Kernel 5. If your cache size parameter is failing at 128M, how much memory do you have on the host? Also you may need Return values: Integer (for size); Float (for percentage). Dear all, i am running a containerized version of Zabbix server v7. Hostname: A unique, case sensitive proxy name. 04. 879 IPMI monitoring: YES 5565:20170704:095602. It's at AWS and using RDS so the CPU and memory loads are low but we do run into the values cache alert with some When a small set of items starts flooding history cache with values, history syncers can't process the cached data fast enough. Top 7% Rank by size . 0) The database is This setup has been working fine for years. It re-creates this cache by default every 60 seconds. Default: 8M Range: 0,128K-64G Initially, Value cache would fill up and then hover around 15-20% full. To efficiently handle this, Zabbix uses two primary types of historical data storage: History and Trends. More posts you may like Related Zabbix Free software Software Information & communications technology Technology forward back. The shared memory size for caching item history data requests. Since that we are experiencing a problem with History Write Cache value dropping on irregular times. Setting to 0 disables value cache (not recommended). I have tried to Google the problem and also found a solution to change the value of CacheSize in zabbix_server. ValueCacheSize. 4. VMwareCacheSize: no: 256K-2G: 8M ДД, Какое оптимальное значение для параметра HistoryTextCacheSize Инфраструктура следующая Leak history write cache zabbix_server -R diaginfo=historycache == history cache diagnostic information == Items:967 values:15211481 time:0. 33 Linux: Alma Linux 9. This morning, we had to do an upgrade on the VMWare ESXi host that the VM is hosted on, thus had to do a shutdown. # Setting to 0 disables value cache 5565:20170704:095602. and I have an issue with one of our proxies. 6 Hello. 24 Zabbix statistics Total hosts: 380 - Total items: 12190 - Total triggers: 4530 - Required server performance: 224. Our current Zabbix 1. 789 __mem_malloc: skipped 340 asked 9677816 skip_min 272 skip_max 1551896 32168:20180828:031614. People. c,line:86] zbx_mem_realloc(): out of memory (requested 9677816 bytes) 32168:20180828:031614. Shared memory size for indexing history data stored in history cache. # # Mandatory: no # Range: 0,128K-64G # Default: ValueCacheSize=500M 4 History and trends Overview. # # Mandatory: no # Range: 128K-2G # Default: HistoryIndexCacheSize=32M ### Option: TrendCacheSize # Size of trend write cache, in bytes. Conf file to increase cache size to 8G. 0 server crash - out of memory CachSize. 7 for RHEL 7 will be released? These issues really killing me. data: The history values do store each item value as it is retrieved/received from the hosts. This happens because the less the stored items/values ratio is, TLDR; ensure you've specified various CacheSize values in zabbix_server. Edit: I think I got it. Bonjour, Je me permets de vous soumettre mon problème, nouveau dans le monde de Zabbix (et donc avec pleins de questions mais on y reviendra plus tard :) ), mon serveur tourne depuis 3/4 jours environs. Just Zabbix is the ultimate enterprise-level software designed for real-time monitoring of millions of metrics collected from tens of thousands of servers, virtual machines and network devices. See attachment. OS is CentOS 7 (centos-release-7-7. # # Mandatory: no # Range: 128K-2G # Default: HistoryCacheSize=16M. 0 using no proxy so far. It has helped but not as much as wel want. Default: zabbix. Have the same problem too. Zabbix internal: zabbix[tcache,cache,pitems] Trend function cache, % of misses: The history index cache is used to index values stored in the history cache. 7 (revision 91e8333180) server, and a MySQL 5. The trapper and poller process also runs pretty at all times (>75%). # Setting to 0 disables My Zabbix server lately has been showing slow overall and your bank has also grown very fast, around 50GB in 3 months. free: Size of free history index history buffer. everything seemed okay until the "history write cache" started using the whole cache and losing data (perhaps by adding more hosts). When history table is empty the write rate is very similar with PG taking a slight lead. Zabbix 7. a problem with items of type log that takes forever to be stored on the database and end up filling the whole textwrite cache. medium It's good to mention that increasing size of history cache didn't help. Page of 2. 要启用值缓存功能，Zabbix server配置文件支持一个可选的ValueCacheSize参数。配置. Previously, this value did not increase, but now it is increasing. I'm using a 6. Float. 33. To make the calculation of trigger expressions, calculated items and some macros much faster, a value cache option is supported by the Zabbix server. 08. # # Mandatory: no # Range: 1-3600 # How often Zabbix Server requests history data from a Zabbix Proxy in seconds. # Shared memory size for storing history data. 0 Performance Tuning Best Practices. Zabbix configuration cache growing rapidly - CacheSize 02-08-2024, 09:40. Setting to 0 disables the value cache (not recommended). Please report bugs here . c,line:86] zbx_mem_realloc(): please increase VMwareCacheSize configuration parameter Size of history value cache, in bytes. thread_cache_size = 512 tmp /usr/sbin/zabbix_server [1886]: ERROR: Configuration buffer is too small. A low number indicates performance Leak history write cache zabbix_server -R diaginfo=historycache == history cache diagnostic information == Items:967 values:15211481 time:0. Initially everything was working fine. 2 If you are having problems with Zabbix, post here. is that though this might make the filling of the cache size take longer - it seems like there would still be an issue of this "slow History index cache is used to index values stored in history cache. Cache Size: 8M -> 32M History Cache: 16M 32168:20180828:031614. Zabbix server is not running. I've never done this on any CacheSize is currently configured for 8GB. 9), tuning in the MariaDB conf, tuning in the Zabbix Server conf and tuning in the Zabbix Proxies conf. Any other thoughts? Attached Files Comment. The size of the history value cache, in bytes. A low number indicates performance Hello, My zabbix process manager always has processing at 100% and the queue always remains high. # Size of history value cache, in bytes. is there a way to The message “Zabbix server: More than 75% used in the trends cache” from your Zabbix monitoring system indicates that the trends cache size is nearing or exceeding its configured maximum limit, which can impact Looking for recommendations on cache size on a Zabbix server. If you are having problems with Zabbix, post here. Loading Dashboards Low percentage most likely means that the cache size can be reduced. If history cache is full the current value processing is paused and some kind of defragmentation kicks in that fills gaps in the cache with data from the end of the cache. ZBX-7566 Zabbix 2. 4 was OK. conf from the standard 32M to a higher. 0-427. Review the "CREATE TABLE" command in the MySQL doc. ly/2TcGgtU Hi, we are (unfortunately) still running Zabbix 2. Keeping history. 1908. As with all newly introduced processes, this cache’s effectiveness can be monitored using internal check zabbix[tcache,cache,], which can be used to set the relevant TrendFunctionCacheSize parameter value. This is fine, but I want to understand what the default value is now All looks fine, except periodically every hour or so zabbix history syncer process is 100 % busy. Handy Tips #12: Optimizing Zabbix database size with custom data storage periods. History and trends are the two ways of storing collected data in Zabbix. el9_4. Some things we have checked: Our current Zabbix 1. HistoryStorageDateIndex: no: 0: Enable preprocessing of history values in history storage to store values in different The chart below combines both results: The throughput rate starts from high values of 170-200K NVPS because it takes some time to populate Zabbix’s history cache before history syncers start flushing data into the database history table. So far I only added less than 10 devices in Zabbix. Post Cancel. # # Mandatory: no # Range: 1-3600 # Shared memory size for caching item history data requests. env_srv and changed that to 256M. However, I'm not sure if that is the Return values: Integer (for size); Float (for percentage). 5 has in total 11936 hosts/items Zabbix server generates configuration cache, mostly containing information on hosts and items to be monitored. 5565:20170704:095602. data: size: free:672386656 used:984689904 chunks: free:227458 The changes in the history cache is me restarting the zabbix services as in past when the history cache fills, data to be processed falls behind. When value cache runs out of the shared memory a warning message is written to the server log every 5 minutes. Started to randomly get this Zabbix server: More than 75% used in the history cache and also Zabbix server: Utilization of history syncer processes over 75% . is duplicated by. pused: Percentage of used history index buffer. 7. 09 10:01:23 Age: 10m query_cache_size = 256M query_cache_limit = 1M max_connections = 100 table_cache = 256 Hi, I have a problem with the Configuration Cache. Shared memory size for storing history data. I followed what the log file said and increased the cache size. We were thinking it can help if we store values inside of it instead of postgres. 2 New things in Zabbix 7. as you can see from the blue line above, the history cache grows eternally due to this Were standing up a new primary Zabbix server (6. Zabbix monitors and collects a vast amount of data from various sources, which can quickly become large and cumbersome to manage and analyze. After a zabbix server reboot - the cache would go back to empty, and then over the course of a week would gradually fill back up again. yaml How would I go about increasing the configuration cache size? I've added 45 servers so far and I'm at about 85%. You can set for how many days history will be kept: in the item properties form; when mass Zabbix server crashed when exiting because of low history index cache size: Set thread_cache_size to 4 as a starting value Performance schema shouldn't be activated for MariaDB 10. This parameter is supported since Zabbix 3. Adding more cache just gives a bit more time till full crash or total freeze of Zabbix, nothing more. Ok, I understand you, it's just a litle bit strange becouse in my previus zabbix instalation (3. All data is fed in via means of Triggers, via zabbix senders. The index cache size needs roughly 100 bytes to cache one item. 879 VMware monitoring: YES It's been working great for some time and recently had a crash due to insufficient cache size for vmware. When the value cache runs out of the shared memory a warning message is written to the server log every 5 minutes. Integer. After I add near 15 switches using snmp. 2 I didn't have any SQL configuration since the upgrade I made some changes thread_cache_size=64 tmp_table_size = 134217728 table_open_cache = 2048 join_buffer_size = 262144 binlog-row-event-max-size = 8192 Disable housekeeper and partition history and trends tables; If using Zabbix prior to 2. When this occurs, it seems that they are in a state where they can't catch up, filling the history cache and at some point they either eventually recover, or I have to kill the zabbix process entirely. HistoryStorageDateIndex: no: 0: Enable preprocessing of history values in history storage to store values in different history cache size; trend cache size; value cache size; I was having some memory issue on yesterday and has increase the cache size in zabbix server config file from default to 32M. HistoryIndexCacheSize: no: 128K-2G: 4M: Size of history index cache, in bytes. The primary purpose of db size: ~20G; db ram: 32G; zabbix history cache: 2G; db syncers: 2; proxy pollers: 3; proxies: 18; items: 480k; triggers: 150k; It drops to ~90% momently but then recovers to 100% free very fast in 1-2 minutes (zabbix history cache: 2G - was mentioned earlier). Just in case it happen again, if my purpose was to add like around 100 devices, what is the recommended cache size ? Currently Zabbix has max size of all Caches = 2G. A low number indicates performance The size of the history cache. 30 History and history index cache Causes: Data cannot be written in the DB fast enough Most of the time issues arise together with history syncer Hello, I am new here, but have been running Zabbix Server with a few Proxies for some time. Zabbix version is 4. amount of RAM to be slightly above 250MB (including cache), but definitely not 700MB (btw this value is ever growing). total: Total size of history index history buffer. 44 server. 4). Please, could someone help me to find the problem and solve that? Zabbix 4. 1) I have the default 8M and had no problems during many years. So either do less frequent data aquisition in your items and/or reduce the time the history is stored. 879 WEB monitoring: YES 5565:20170704:095602. I have a problem with the processes of history Syncer, normally start synchronizing the values in the database, but after a few minutes the timing of the process becomes increasingly slow, this is the queue server grow and shoot all triggers NODATA currently have to do a restart of I applied the patch I had proposed, built, increased the configuration cache value from 8GB to 12 GB, and waited. And interestingly back to If the value is not available in the cache yet, Zabbix will query the database and update the cache. conf. Data retention requirements can vary a lot between History syncer and Housekeeper problem - v3. # Size of history cache, in bytes. 1. If it reaches above 90%, the Zabbix Server Container shuts down. Haven't found anything yet that could lead to rejecting new data if free cache size is below a threshold and it is freed again. We are running into the same issue with zabbix, basically the history syncer process pegs at 100% Stopping the zabbix server leads to hours and ours of history syncing entries in the log. Hi, I have a We have 70 hosts in Zabbix and our value cache is setted to 50MB, but once a week it get higher than 95% and we have to restar Zabbix Server to flush Value Cache Size, there is a recommendation for value cache size by Host or Items or Triggers? Or every thing else? Or other setup to do in Server to bring it more stable? If this is your first visit, be sure to check out the FAQ by clicking the link above. Devops Monitoring Expert advice: Dockerize/automate/monitor all the things. Time. How do I clear it? I'm increasing the CacheSize value every week. 10 Value cache Overview. -- # HistoryCacheSize=16M HistoryCacheSize=64M # Size of history index cache, in bytes. If you have full history cache then you will never recover it anyways. # Setting to 0 disables value cache. This parameter is supported since Zabbix 2. Thanks in advance Zabbix version: 6. 879 SNMP monitoring: YES 5565:20170704:095602. The configuration cache is filling up slowly but constantly and only on one specific proxy. 330040 sec, syncing history] 1748485 /usr/sbin/zabbix_server: history syncer #3 [processed 0 values, 0 triggers in 0. As it takes to long I have to kill -9 all zabbix_server procs. # # Mandatory: no # Range: 128K-2G # Default: TrendFunctionCacheSize=256M ### Option: ValueCacheSize # Size of history value cache, in bytes. This period Return values: Integer (for size); Float (for percentage). 0. 支持两个内部监控项用于监视值缓存： zabbix[vcache,buffer,<mode>] and zabbix[vcache,cache,<parameter>]。更多细节请查看 内部监控项。 Zabbix history syncer process high load. So i tried to up the value to 256M and Hello Zabbix Community, I'm managing a Zabbix installation that monitors 50 servers within our infrastructure. Attachments. Issue Links. r/MacOS. Leak history write cache zabbix_server -R diaginfo=historycache == history cache diagnostic information == Items:967 values:15211481 time:0. 0 New processes Adjusted health monitoring Indexes history cache ¼ size of history cache. # Shared memory size for storing trends data. mjcig. My DevOps stack: Docker / Kubernetes / Mesos / ECS / Terraform / Elasticsearch / Zabbix / Grafana / Puppet / Ansible / Vagrant According to logs, the cache is too small BUT, on the Self Monitoring Zabbix Cache Graph (atached) there is a lot of free space in VMware Cache. 165088 Memory. conf to 3 times the size didn't have any effect. data: size: free:672386656 used:984689904 chunks: free:227458 used:30422962 min:24 max:1241344 buckets: Our zabbix server process starts and runs fine for 10-15 days, after which I'm speculating perhaps the memory allocated for the cache becomes more and more fragmented, causing an increased cache utilization. (It is in the pipeline to upgrade to 6. Posts; Latest Activity; Photos . It's good to mention that increasing size of history cache didn't help. Zabbix 2. Furthermore, at this period last date for all elements isn't updated in Zabbix WEB. Since November 2018 we have performance problems with Zabbix 3. 8. 000348 Memory. HistoryIndexCacheSize: The size of the history index cache. And don't think adding more History Syncers will help - no, it won't. 000034 sec, idle 1 sec] Configuration cache size will increase because of this Each entity has a revison number in configuration 4 History and trends Overview. # Size of trend function cache, in bytes. # # Mandatory: no # Range: 128K-2G # Default: # HistoryCacheSize=16M # How often Zabbix Server requests history data from a Zabbix Proxy in seconds. I'm seeking advice on determining the ideal cache size for our Zabbix server to optimize performance and resource utilization. It turns impossible to store log items like this, and the average size of the Problem zabbix history syncer processes 27-01-2016, 22:00. Junior Member. I check log it shows configuration cache out of memory. -- # CacheSize=8M CacheSize=32M -- ### Option: HistoryCacheSize # Size of history cache, in bytes. # This parameter is used only for proxies in the passive mode. I see there have been historical issues Every couple of days the zabbix-server gets stuck and all agents are unreachableMy Zabbix History Write Cache is fully utilized which clears up on a service restart. Then I can start the server again. Server dies when the limit is exceeded and indicates that the CacheSize should be increased. Size of history index cache, in bytes. Zabbix is the ultimate enterprise-level software designed for real-time monitoring of millions of metrics collected from tens of thousands of servers, virtual machines and network devices. You may have to REGISTER before you can post. The history cache is used to store item values. fuvp jmipn jyksjm xfuagj rueya cufo lxhibl xyd skwrexg mfbw