"
Tested with perf_fast_forward from:
github.com/tgrabiec/scylla.git perf_fast_forward-for-sst3-opt-write-v1
Using the following command line:
build/release/tests/perf/perf_fast_forward_g --populate --sstable-format=mc \
--data-directory /tmp/perf-mc --rows=10000000 -c1 -m4G \
--datasets small-part
The average reported flush throughput was (stdev for the avergages is around 4k):
- for mc before the series: 367848 frag/s
- for lc before the series: 463458 frag/s (= mc.before +25%)
- for mc after the series: 429276 frag/s (= mc.before +16%)
- for lc after the series: 466495 frag/s (= mc.before +26%)
Refs #3874.
"
* tag 'sst3-opt-write-v2' of github.com:tgrabiec/scylla:
sstables: mc: Avoid serialization of promoted index when empty
sstables: mc: Avoid double serialization of rows
tests: sstable 3.x: Do not compare Statistics component
utils: Introduce memory_data_sink
schema: Optimize column count getters
sstables: checksummed_file_data_sink_impl: Bypass output_stream
(cherry picked from commit 4aa5d83590)
