DCP throughput drop (~15%) in CC build 7.0.0-4170 vs 6.6.0 (compression enabled)

Edit: Updated with newer, post-warmup tests

In 7.0.0-4170 I see a ~15% reduction in throughput compared with 6.6.0-7909 - 230k op/s vs 197k op/s for DCP Throughput, 1 node, 100M x 1KB, Java client, 100% Resident, compression enabled, post warmup:

Details

I have added these new tests to showfast here - 

http://showfast.sc.couchbase.com/#/timeline/Linux/kv/dcp/all

DCP Throughput, 1 node, 100M x 1KB, Java client, 100% Resident, compression enabled, post warmup

DCP Throughput, 1 node, 100M x 1KB, Java client, 50% Resident, compression enabled, post warmup

DCP Throughput, 1 node, 200M x 1KB, Java client, 50% Resident, compression enabled, post warmup

These are three tests with different data volume and resident ratio with below test flow - 

1. setup cluster  [1 node cluster, ~110 GB mem quota , eviction_policy=full eviction]
2. load data
3. compact bucket
4. warmup -> [stop cb server, Drop memory Cache, start cb server back, monitor  warmup status by monitoring ep_warmup_state stat]
5. run DCP using java-dcp client 
   perf/run.sh couchbase://bucket-1:password@cen-sc34.perf.couchbase.com/bucket-1 100000000 perf/config/compression-enabled.properties > java_dcp.log

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Original description
Observing ~60% drop DCP throughput in CC build .