Slow initial indexing performance on 2.0

Spec:
Build 1639
2 nodes, with 30 GB ram capacity
1 replica, with replica index enabled
4 ddocs, with 2 views in each. (d8, d9, d10, d11)

Indexes live separately. 15M items, 1 bucket.
"Stable cluster", No front-end load, and no topology changes.
Before starting the each tests, swap usage is 0%.
Centos 6.2, 64 bit, ext4 file system for both data and indexes

disk writes is around 50-60 megs pers second
1Kb values sizes

Mcsoda commands:-
nohup python lib/perf_engines/mcsoda.py membase://10.6.2.11:8091 vbuckets=1024 max-items=5000000 doc-gen=0 doc-cache=0 ratio-sets=1 prefix=kk min-value-size=900 json=1 exit-after-creates=1 ratio-creates=1 &
nohup python lib/perf_engines/mcsoda.py membase://10.6.2.11:8091 vbuckets=1024 max-items=5000000 doc-gen=0 doc-cache=0 ratio-sets=1 prefix=grand min-value-size=900 json=1 exit-after-creates=1 ratio-creates=1 &
nohup python lib/perf_engines/mcsoda.py membase://10.6.2.7:8091 vbuckets=1024 max-items=5000000 doc-gen=0 doc-cache=0 ratio-sets=1 prefix=france min-value-size=900 json=1 exit-after-creates=1 ratio-creates=1 &