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https://issues.apache.org/jira/browse/LUCENE-4995?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13677767#comment-13677767
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Aditya edited comment on LUCENE-4995 at 6/7/13 2:30 AM:
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Quick update on our test. We did a test for around 1 hour and it seams that
this patch is working. GC does re-claim all the memory back to acceptable
margin. (Test duration 17:20 to 18:35)
I have attached CPU and heap Graph for our 1 hour test (8GB Heap 200qps only
document cache with max size 4096 see hit ratio 89%)
We are performing some more configuration changes at JVM and Solr Cache size
and run full night test to see if the server keeps up.
Two concerns that i see is
1. Frequent GCs
2. Heap is used up very quick.
Any advice to improve, please let me know.
was (Author: abakle):
Quick update on our test. We did a test for around 1 hour and it seams that
this patch is working. GC does re-claim all the memory back to acceptable
margin.
I have attached CPU and heap Graph for our 1 hour test (8GB Heap 200qps only
document cache with max size 4096 see hit ratio 89%)
We are performing some more configuration changes at JVM and Solr Cache size
and run full night test to see if the server keeps up.
Two concerns that i see is
1. Frequent GCs
2. Heap is used up very quick.
Any advice to improve, please let me know.
> Remove the strong reference of CompressingStoredFieldsReader on the
> decompression buffer
> ----------------------------------------------------------------------------------------
>
> Key: LUCENE-4995
> URL: https://issues.apache.org/jira/browse/LUCENE-4995
> Project: Lucene - Core
> Issue Type: Bug
> Reporter: Adrien Grand
> Assignee: Adrien Grand
> Attachments: cpuGraph_4995Patch.jpg, heapGraph_4995Patch.jpg,
> LUCENE-4995.patch
>
>
> CompressingStoredFieldsReader has a strong reference on the buffer it uses
> for decompression. Although it makes the reader able to reuse this buffer,
> this can trigger high memory usage in case some documents are very large.
> Creating this buffer on demand would help give memory back to the JVM.
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