VictoriaMetrics/CHANGELOG.md

tip

• FEATURE: reduce CPU usage for repeated queries over sliding time window when no new time series are added to the database. Typical use cases: repeated evaluation of alerting rules in vmalert or dashboard auto-refresh in Grafana.

• FEATURE: vmagent: add OpenStack service discovery aka openstack_sd_config.

• FEATURE: vmalert: make -maxIdleConnections configurable for datasource HTTP client. This option can be used for minimizing connection churn. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/795 .

• FEATURE: add -influx.maxLineSize command-line flag for configuring the maximum size for a single Influx line during parsing. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/807

• BUGFIX: properly handle inf values during background merge of LSM parts. Previously Inf values could result in NaN values for adjancent samples in time series. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/805 .

• BUGFIX: fill gaps on graphs for range_* and running_* functions. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/806 .

• BUGFIX: make a copy of label with new name during relabeling with action: labelmap in the same way as Prometheus does. Previously the original label name has been replaced. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/812 .

• BUGFIX: support parsing floating-point timestamp like Graphite Carbon does. Such timestmaps are truncated to seconds.

v1.42.0

• FEATURE: use all the available CPU cores when accepting data via a single TCP connection for all the supported protocols. Previously data ingested via a single TCP connection could use only a single CPU core. This could limit data ingestion performance. The main benefit of this feature is that data can be imported at max speed via a single connection - there is no need to open multiple concurrent connections to VictoriaMetrics or vmagent in order to achieve the maximum data ingestion speed.

• FEATURE: cluster: improve performance for data ingestion path from vminsert to vmstorage nodes. The maximum data ingestion performance for a single connection between vminsert and vmstorage node scales with the number of available CPU cores on vmstorage side. This should help with https://github.com/VictoriaMetrics/VictoriaMetrics/issues/791 .

• FEATURE: add ability to export / import data in native format via /api/v1/export/native and /api/v1/import/native. This is the most optimized approach for data migration between VictoriaMetrics instances. Both single-node and cluster instances are supported. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/787#issuecomment-700632551 .

• FEATURE: add reduce_mem_usage query option to /api/v1/export in order to reduce memory usage during data export / import. See these docs for details.

• FEATURE: improve performance for /api/v1/series handler when it returns big number of time series.

• FEATURE: add vm_merge_need_free_disk_space metric, which can be used for estimating the number of deferred background data merges due to the lack of free disk space. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/686 .

• FEATURE: add OpenBSD support. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/785 .

• BUGFIX: properly apply -search.maxStalenessInterval command-line flag value. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/784 .

• BUGFIX: fix displaying data in Grafana tables. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/720 .

• BUGFIX: do not adjust the number of detected CPU cores found at /sys/devices/system/cpu/online. The adjustement was increasing the resulting GOMAXPROC by 1, which looked confusing to users. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/685#issuecomment-698595309 .

• BUGFIX: vmagent: do not show -remoteWrite.url in initial logs if -remoteWrite.showURL isn't set. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/773 .

• BUGFIX: properly handle case when /metrics/find finds both a leaf and a node for the given query=prefix.*. In this case only the node must be returned with stripped dot in the end of id as carbonapi does.

Previous releases

See releases page.