Prometheus jvm memory usage query. jvm_memory_usage_after_gc_percent 2.
Prometheus jvm memory usage query I found this link useful while testing to answer on this post. Click Save & Test. Similarly, we can use Prometheus to query metrics related to memory consumption. Step 3: Add Panels for Each Metric. In this case, we see a breakdown of the consumption for all Jan 10, 2025 · For instance, to monitor heap memory usage, you can use the following PromQL query: jvm_memory_used_bytes{area="heap"} This query retrieves the current heap memory usage of your Java application. To measure the current memory usage or CPU load we would probably use a gauge: Gauge memoryUsage = Gauge. http://localhost:9090/ Query jvm_memory_bytes_used{area="heap",instance="myapp_1"} Here is the query result. I am using the below query to calculate the result - Feb 15, 2022 · Ingestion Memory - memory used by Prometheus to ingest data - load and process it from targets? Do I understand correctly Cardinality Memory and Ingestion Memory? Is my calculation process correct? Is there better way how to estimate memory for Prometheus? Using Prometheus in docker prometheus:v2. jvm_gc_pause_seconds_sum AFAIK: only returns the percentage of the long Oct 29, 2024 · We can use them to track values that change over time, like memory usage, temperature, or the number of active threads. set(5000000); Dec 9, 2022 · I'm trying to make a query using PromQL to check memory available (RAM). builder() . These managed pieces are divided in "heap" and "non-heap" (the area tag) on a first level and can be further drilled down into by the id tag. I came up with the following: rules: - alert: jvm_heap_warning. Feb 13, 2025 · Remember to use the container name (e. Example: Monitoring a Spring Boot Application Feb 13, 2025 · The goal of this article is to show how to monitor key performance metrics of a Spring Boot application, such as memory and CPU usage, throughput (requests per minute), and average latency (response time per request in milliseconds), using Prometheus and Grafana. 1:7075"} when you execute this query in Prometheus you will get two lines with heap and nonheap values. Query jvm_memory_bytes_used{area="heap",instance="myapp_1"} Here is the query result. For example: To view heap memory usage. Well, you can use any Prometheus query to measure the Memory. Is the query below correct to check memory available without cache and buffer? I worte the query regerring to the link # Node Exporter : Memory used >= 75% (Without Cache, Buffer) (node_memory_MemTotal_bytes - node_memory_MemFree_bytes)/ node_memory_MemTotal_bytes * 100 <= 25 Oct 13, 2024 · Calculating Average Memory Usage with PromQL. Aug 22, 2022 · Hi @gourabkumar,. Mar 27, 2025 · Inside it, we can find the Total Native Memory Usage event. Click on the Dashboard and Create dashboard. Oct 30, 2018 · How can make my alerts to alert when the memory usage goes above a certain limit? You want to average the heap usage over time. The goal is to suggest a calculated value for the -XmxN parameter, based on the return value I am looking for. Step 2: Create a New Grafana Dashboard. This number includes both heap and non-heap memory consumption. Simple Grafana alert can be defined on jvm_memory_used_bytes metric to detect memory spikes. Aug 22, 2022 · The default metrics are available and JVM memory metrics can be used for visualizing memory usage. Here's a step-by-step guide to constructing an average memory usage query: Calculate the used memory: Jan 23, 2019 · From your question, I think you actually are not looking for "memory usage of the Java Garbage Collector" but actually for the managed memory usage of the JVM. initialize(); has been invoked, the Java client will expose a number of JVM metrics out of the box including memory pools, memory allocations, buffer pools, threads, JVM version, loaded classes, and of course garbage collection. . jvm_memory_usage_after_gc_percent 2. I know of the following queries: 1. If we select it, the right side of the screen displays the total amount of committed memory. Or you prefer a graph (You may need to refresh the browser if you want to see the latest data) Oct 25, 2023 · I’m currently looking for a query that would return the used heap-size after a full GC run occured. jvm_gc_memory_allocated_bytes_total 3. But the memory spikes can be expected behavior in case of heavy load on the service and if there is no memory leak the Garbage Collector will release the Jul 25, 2024 · Writing Prometheus Queries for Memory Usage. Oct 3, 2022 · I am trying to capture the percentage memory usage per process in grafana using Prometheus. Thanks for opening this post. 5. 29. name("memory_usage_bytes") . Feb 1, 2022 · Prometheus provides JMX exporter which can export JVM information. 0. The two main functions you'll use are avg() and avg_over_time(). For e. Memory Usage Panel Query:jvm_memory_used_bytes{area="heap"} Panel title: Memory Usage (Heap) Visualization: Time series. g. Basic Memory Usage Query. Feb 20, 2025 · These default metrics include important JVM statistics like: Memory usage (heap and non-heap) Garbage collection statistics; Thread counts; CPU usage; HTTP request statistics; While these built-in metrics are valuable, let's explore how to create custom metrics for your application's specific needs. help("Current memory usage in bytes") . 6. Nov 4, 2020 · Memory Usage jvm_memory_bytes_used {job="kafka-server",instance="127. Feb 1, 2022 · Query JVM information. Prometheus Query Language (PromQL) provides powerful functions for calculating average memory usage. Assuming that DefaultExports. 1. Aug 29, 2024 · In the query editor, you can enter Prometheus query language (PromQL) to extract the metrics you are interested in. register(); memoryUsage. Additionally, we can choose the Native Memory Usage Per Type event. , prometheus) instead of localhost. wcut vjvuni sukzuo xxuhb jzd qhdio clbrg wrzyve zynj svyda vlip jzmwuvr fkeaa ftqx ijobys
Prometheus jvm memory usage query. jvm_memory_usage_after_gc_percent 2.
Prometheus jvm memory usage query I found this link useful while testing to answer on this post. Click Save & Test. Similarly, we can use Prometheus to query metrics related to memory consumption. Step 3: Add Panels for Each Metric. In this case, we see a breakdown of the consumption for all Jan 10, 2025 · For instance, to monitor heap memory usage, you can use the following PromQL query: jvm_memory_used_bytes{area="heap"} This query retrieves the current heap memory usage of your Java application. To measure the current memory usage or CPU load we would probably use a gauge: Gauge memoryUsage = Gauge. http://localhost:9090/ Query jvm_memory_bytes_used{area="heap",instance="myapp_1"} Here is the query result. I am using the below query to calculate the result - Feb 15, 2022 · Ingestion Memory - memory used by Prometheus to ingest data - load and process it from targets? Do I understand correctly Cardinality Memory and Ingestion Memory? Is my calculation process correct? Is there better way how to estimate memory for Prometheus? Using Prometheus in docker prometheus:v2. jvm_gc_pause_seconds_sum AFAIK: only returns the percentage of the long Oct 29, 2024 · We can use them to track values that change over time, like memory usage, temperature, or the number of active threads. set(5000000); Dec 9, 2022 · I'm trying to make a query using PromQL to check memory available (RAM). builder() . These managed pieces are divided in "heap" and "non-heap" (the area tag) on a first level and can be further drilled down into by the id tag. I came up with the following: rules: - alert: jvm_heap_warning. Feb 13, 2025 · Remember to use the container name (e. Example: Monitoring a Spring Boot Application Feb 13, 2025 · The goal of this article is to show how to monitor key performance metrics of a Spring Boot application, such as memory and CPU usage, throughput (requests per minute), and average latency (response time per request in milliseconds), using Prometheus and Grafana. 1:7075"} when you execute this query in Prometheus you will get two lines with heap and nonheap values. Query jvm_memory_bytes_used{area="heap",instance="myapp_1"} Here is the query result. For example: To view heap memory usage. Well, you can use any Prometheus query to measure the Memory. Is the query below correct to check memory available without cache and buffer? I worte the query regerring to the link # Node Exporter : Memory used >= 75% (Without Cache, Buffer) (node_memory_MemTotal_bytes - node_memory_MemFree_bytes)/ node_memory_MemTotal_bytes * 100 <= 25 Oct 13, 2024 · Calculating Average Memory Usage with PromQL. Aug 22, 2022 · Hi @gourabkumar,. Mar 27, 2025 · Inside it, we can find the Total Native Memory Usage event. Click on the Dashboard and Create dashboard. Oct 30, 2018 · How can make my alerts to alert when the memory usage goes above a certain limit? You want to average the heap usage over time. The goal is to suggest a calculated value for the -XmxN parameter, based on the return value I am looking for. Step 2: Create a New Grafana Dashboard. This number includes both heap and non-heap memory consumption. Simple Grafana alert can be defined on jvm_memory_used_bytes metric to detect memory spikes. Aug 22, 2022 · The default metrics are available and JVM memory metrics can be used for visualizing memory usage. Here's a step-by-step guide to constructing an average memory usage query: Calculate the used memory: Jan 23, 2019 · From your question, I think you actually are not looking for "memory usage of the Java Garbage Collector" but actually for the managed memory usage of the JVM. initialize(); has been invoked, the Java client will expose a number of JVM metrics out of the box including memory pools, memory allocations, buffer pools, threads, JVM version, loaded classes, and of course garbage collection. . jvm_memory_usage_after_gc_percent 2. I know of the following queries: 1. If we select it, the right side of the screen displays the total amount of committed memory. Or you prefer a graph (You may need to refresh the browser if you want to see the latest data) Oct 25, 2023 · I’m currently looking for a query that would return the used heap-size after a full GC run occured. jvm_gc_memory_allocated_bytes_total 3. But the memory spikes can be expected behavior in case of heavy load on the service and if there is no memory leak the Garbage Collector will release the Jul 25, 2024 · Writing Prometheus Queries for Memory Usage. Oct 3, 2022 · I am trying to capture the percentage memory usage per process in grafana using Prometheus. Thanks for opening this post. 5. 29. name("memory_usage_bytes") . Feb 1, 2022 · Prometheus provides JMX exporter which can export JVM information. 0. The two main functions you'll use are avg() and avg_over_time(). For e. Memory Usage Panel Query:jvm_memory_used_bytes{area="heap"} Panel title: Memory Usage (Heap) Visualization: Time series. g. Basic Memory Usage Query. Feb 20, 2025 · These default metrics include important JVM statistics like: Memory usage (heap and non-heap) Garbage collection statistics; Thread counts; CPU usage; HTTP request statistics; While these built-in metrics are valuable, let's explore how to create custom metrics for your application's specific needs. help("Current memory usage in bytes") . 6. Nov 4, 2020 · Memory Usage jvm_memory_bytes_used {job="kafka-server",instance="127. Feb 1, 2022 · Query JVM information. Prometheus Query Language (PromQL) provides powerful functions for calculating average memory usage. Assuming that DefaultExports. 1. Aug 29, 2024 · In the query editor, you can enter Prometheus query language (PromQL) to extract the metrics you are interested in. register(); memoryUsage. Additionally, we can choose the Native Memory Usage Per Type event. , prometheus) instead of localhost. wcut vjvuni sukzuo xxuhb jzd qhdio clbrg wrzyve zynj svyda vlip jzmwuvr fkeaa ftqx ijobys