# Gc info (LastGcInfo)

**URL:** <https://discuss.elastic.co/t/gc-info-lastgcinfo/95347>\
**Category:** Logstash\
**Created:** [August 1, 2017, 1:26pm UTC](https://discuss.elastic.co/t/gc-info-lastgcinfo/95347 "2017-08-01T13:26:26Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![abhishekattlalance](https://avatars.discourse-cdn.com/v4/letter/a/b2d939/32.png) [@abhishekattlalance](https://discuss.elastic.co/u/abhishekattlalance)\
**Post date:** [August 1, 2017, 1:26pm UTC](https://discuss.elastic.co/t/gc-info-lastgcinfo/95347/1 "2017-08-01T13:26:26Z")

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Hi ,

i am using logstash for collecting JMX values. i want to use GC info in kibana dashboard. but its coming like below:

{\<Java::JavaUtil::Collections::UnmodifiableRandomAccessList:1895444369 ["G1 Survivor Space"]\>=\>#Java::JavaxManagementOpenmbean::CompositeDataSupport:0x2fa52ea3, \<Java::JavaUtil::Collections::UnmodifiableRandomAccessList:1869951550 ["Compressed Class Space"]\>=\>#Java::JavaxManagementOpenmbean::CompositeDataSupport:0x3726a258, \<Java::JavaUtil::Collections::UnmodifiableRandomAccessList:953021984 ["Metaspace"]\>=\>#Java::JavaxManagementOpenmbean::CompositeDataSupport:0x66f1342d, \<Java::JavaUtil::Collections::UnmodifiableRandomAccessList:780515424 ["G1 Old Gen"]\>=\>#Java::JavaxManagementOpenmbean::CompositeDataSupport:0x883d980, \<Java::JavaUtil::Collections::UnmodifiableRandomAccessList:-258349661 ["G1 Eden Space"]\>=\>#Java::JavaxManagementOpenmbean::CompositeDataSupport:0x1982c1cb, \<Java::JavaUtil::Collections::UnmodifiableRandomAccessList:-433555538 ["Code Cache"]\>=\>#Java::JavaxManagementOpenmbean::CompositeDataSupport:0x3eb7e649}

so please let me know how i will get below value:

LastGcInfo.memoryUsageAfterGc.Code Cache.committed

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [August 29, 2017, 1:27pm UTC](https://discuss.elastic.co/t/gc-info-lastgcinfo/95347/2 "2017-08-29T13:27:04Z")

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