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Type: Bug
Resolution: Done
Priority: Major
Fix Version/s: 4.1.0
Affects Version/s: 3.1.0
Component/s: performance
Security Level: Public
Labels:
None
Environment:

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couchbase server:
    centos 6.5 64-bit, 32 core cpu, 60 GB RAM, 300 GB SSD, 10 Git network
clients:
   3 ubuntu 6.5 64-bit, 8 core cpu, 30 GB RAM, 80 GB SSD, 10 Git network
   1 centos 6.5 64-bit, 32 core cpu, 60 GB RAM, 300 GB SSD, 10 Git network


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couchbase server:     centos 6.5 64-bit, 32 core cpu, 60 GB RAM, 300 GB SSD, 10 Git network clients:    3 ubuntu 6.5 64-bit, 8 core cpu, 30 GB RAM, 80 GB SSD, 10 Git network    1 centos 6.5 64-bit, 32 core cpu, 60 GB RAM, 300 GB SSD, 10 Git network

Triage:
Untriaged
Operating System:
Centos 64-bit
Link to Log File, atop/blg, CBCollectInfo, Core dump:

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https://s3.amazonaws.com/cb-customers/ec2_test_3_perf/collectinfo-2015-08-19T205349-ns_1%4010.111.199.108.zip
https://s3.amazonaws.com/cb-customers/ec2_test_3_perf/collectinfo-2015-08-19T205349-ns_1%4010.111.200.252.zip
https://s3.amazonaws.com/cb-customers/ec2_test_3_perf/collectinfo-2015-08-19T205349-ns_1%4010.164.216.74.zip
https://s3.amazonaws.com/cb-customers/ec2_test_3_perf/collectinfo-2015-08-19T205349-ns_1%4010.167.214.108.zip
https://s3.amazonaws.com/cb-customers/ec2_test_3_perf/collectinfo-2015-08-19T205349-ns_1%4010.186.200.80.zip
https://s3.amazonaws.com/cb-customers/ec2_test_3_perf/collectinfo-2015-08-19T205349-ns_1%4010.230.196.85.zip
https://s3.amazonaws.com/cb-customers/ec2_test_3_perf/collectinfo-2015-08-19T205349-ns_1%4010.231.204.109.zip
https://s3.amazonaws.com/cb-customers/ec2_test_3_perf/collectinfo-2015-08-19T205349-ns_1%4010.231.213.57.zip
https://s3.amazonaws.com/cb-customers/ec2_test_3_perf/collectinfo-2015-08-19T205349-ns_1%4010.233.55.145.zip
https://s3.amazonaws.com/cb-customers/ec2_test_3_perf/collectinfo-2015-08-19T205349-ns_1%4010.31.246.146.zip

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https://s3.amazonaws.com/cb-customers/ec2_test_3_perf/collectinfo-2015-08-19T205349-ns_1%4010.111.199.108.zip https://s3.amazonaws.com/cb-customers/ec2_test_3_perf/collectinfo-2015-08-19T205349-ns_1%4010.111.200.252.zip https://s3.amazonaws.com/cb-customers/ec2_test_3_perf/collectinfo-2015-08-19T205349-ns_1%4010.164.216.74.zip https://s3.amazonaws.com/cb-customers/ec2_test_3_perf/collectinfo-2015-08-19T205349-ns_1%4010.167.214.108.zip https://s3.amazonaws.com/cb-customers/ec2_test_3_perf/collectinfo-2015-08-19T205349-ns_1%4010.186.200.80.zip https://s3.amazonaws.com/cb-customers/ec2_test_3_perf/collectinfo-2015-08-19T205349-ns_1%4010.230.196.85.zip https://s3.amazonaws.com/cb-customers/ec2_test_3_perf/collectinfo-2015-08-19T205349-ns_1%4010.231.204.109.zip https://s3.amazonaws.com/cb-customers/ec2_test_3_perf/collectinfo-2015-08-19T205349-ns_1%4010.231.213.57.zip https://s3.amazonaws.com/cb-customers/ec2_test_3_perf/collectinfo-2015-08-19T205349-ns_1%4010.233.55.145.zip https://s3.amazonaws.com/cb-customers/ec2_test_3_perf/collectinfo-2015-08-19T205349-ns_1%4010.31.246.146.zip
Is this a Regression?:
Unknown

Description

Install cb server 3.1.0-1776 on 10 nodes
Create cluster of 10 nodees
Create default bucket
Use multi clients to load 240 million items with size 100 bytes to 200 bytes to default bucket (no view nor indexing)
Keep the load running with 100% set (updated) using cbc-pillowfight
cbc-pillowfight -I 40000000 -m 200 -M 200 -U couchbase://10.31.246.146/default -t 50 -p load_1_ -r 100

I see the ops graph does not maintain at 300K to 400K but it is up and down to zero as show in capture image in the whole test run (almost a day)