Re: Memory foot print of the ignite nThe background cache eviction process was unable to free [10] percent of the cache for Context
Naveen, I am not sure I understand you correctly. Ignite off-heap usage is a part of your VIRT "top" output. You can add DATA column to "top" output to better visualize memory usage of pure on-heap+off-heap data only. Please run Ignite with different memory settings and see the memory footprint. PID USER PR NIVIRTRESSHR S %CPU %MEM TIME+ COMMAND SWAP CODEDATA 6833 root 20 0 3725072 242744 17740 S 1.0 12.0 0:11.02 java 0 4 1427232 Thank you, Alexey -- Sent from: http://apache-ignite-users.70518.x6.nabble.com/
Re: Memory foot print of the ignite nThe background cache eviction process was unable to free [10] percent of the cache for Context
Thanks Alexey. As you mentioned, in heap its only java classes that reside, which you can mention while starting the ignite thru VM options and it will be reflected after the node comes up Topology snapshot [ver=1, servers=1, clients=0, CPUs=8, heap=7.1GB] And, on linux when we execute top command we can see all the processes running and other stats like RAM, CPU usage like below Below entry is shown for the ignite process, which shows the used heap size of JVM. PID USER PR NIVIRTRESSHR S %CPU %MEM TIME+ COMMAND 63200 tibusr20 0 21.562g *1.792g * 14908 S 1.0 5.8 14:37.77 /app/JAVA_1.8/jdk1.8.0_151//bin/java -Xms1g -Xmx1g -server -XX:+AggressiveOpts -XX:MaxMetaspace+ However, data is not stored in off-heap, so how do we know the process which is holding the off-heap memory, can we see this in the top command output Thanks Naveen -- Sent from: http://apache-ignite-users.70518.x6.nabble.com/
Re: Memory foot print of the ignite nThe background cache eviction process was unable to free [10] percent of the cache for Context
Hi Naveen, Off-heap memory "Off-heap size" works strangely. There are several tickets here https://issues.apache.org/jira/browse/IGNITE-6814 https://issues.apache.org/jira/browse/IGNITE-5583 http://apache-ignite-users.70518.x6.nabble.com/Cache-size-in-Memory-td17226.html You can get an estimation of off-heap memory usage by * (4k default for 2.3) ^-- PageMemory [pages=2043040] So, it is about 2043040 * 4096 = 8.3 Gb Does it look realistic for you data models? Please note that all Caches are stored off-heap. On-heap memory used for data transfer, "hot" caches on top of off-heap caches, etc. Regarding your error: Are you sure you use Ignite here for cache variable? It looks like org.apache.catalina.webresources.Cache is used instead of Ignite for your code res = cache.get(custid).toString(); Thank you, Alexey -- Sent from: http://apache-ignite-users.70518.x6.nabble.com/
