Details
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Bug
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Resolution: Duplicate
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Critical
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3.0.1
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Security Level: Public
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Untriaged
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Windows 64-bit
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Yes
Description
Rebalance out time increased from 242.7 to 322.3 minutes from 2.5.1 to 3.0.1.
Test details:
Rebalance-out (min), 4 -> 3, 1 bucket x 100M x 2KB, 1 x 1 views, 10K ops/sec, 400 queries/sec
Observations (2.5.1 vs 3.0.1):
12x increase in bg_fetch latency from 250us to 3000us.
23x decrease in avg disk update time from max of 70us to 3us.
~4x increase in 90 percentile query latency from 13ms to 46ms.
cache miss rate ~2% in both runs.
active resident ratio 20-25% in both runs.
machine details:
RAID 10 HDD
24 vCPU, 64 GB
links:
http://cbmonitor.sc.couchbase.com/reports/html/?snapshot=zeus_301-1330_606_rebalance
http://cbmonitor.sc.couchbase.com/reports/html/?snapshot=zeus_251-1083_20f_rebalance
logs:
http://ci.sc.couchbase.com/job/zeus-64/1218/artifact/172.23.96.25.zip
http://ci.sc.couchbase.com/job/zeus-64/1218/artifact/172.23.96.26.zip
http://ci.sc.couchbase.com/job/zeus-64/1218/artifact/172.23.96.27.zip
http://ci.sc.couchbase.com/job/zeus-64/1218/artifact/172.23.96.28.zip
Attachments
Issue Links
- is duplicated by
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MB-12125 rebalance swap regression of 39.3% compared with 2.5.1
- Closed