Initial view indexing is slower between builds 762 and 845

This is part of daily sanity, a test which creates indexes on views with 2M KV, got slower for the initial index creation. It increased from 1.6 to 2.1 minutes.

Logs are attached for the slower and faster cases. Please let me know if there is more information I can provide.

Here are the commands to run the test:
/tmp/env/bin/python -m perfrunner.utils.install -c perfSanity/clusters/perf_sanity_base_test.spec -v 4.5.0-761
/tmp/env/bin/python -m perfrunner.utils.cluster -c perfSanity/clusters/perf_sanity_base_test.spec -t perfSanity/tests/perf_sanity_index_2M.test
/tmp/env/bin/python -m perfrunner -c perfSanity/clusters/perf_sanity_base_test.spec -t perfSanity/tests/perf_sanity_index_2M.test --nodebug