Glauber Costa 74a4843d2a sstable index: try to read everything in a single run ...

We know the correct boundaries now, so we can use that information to
feed the default buffer size: if it is small enough (smaller than 128k),
we can try to bring everything at once.

For the default key sized 128 that we use in the index read perf:
(smp == 1, partitions = 500000, concurrency == 1)

Before:
423493.26 +- 811.03 partitions / sec (30 runs, 1 concurrent ops)

After:
707311.86 +- 1865.47 partitions / sec (30 runs, 1 concurrent ops)

For a gain of 67 %.

Signed-off-by: Glauber Costa <glommer@cloudius-systems.com>

2015-08-27 09:19:05 -05:00

..

column_name_helper.hh

sstables: add missing #include guard

2015-07-16 07:25:56 +03:00

compaction.cc

Revert "Merge "Commit log replay" from Calle"

2015-08-27 12:39:08 +03:00

compaction.hh

sstables: add function to return candidates using size-tiered strategy

2015-07-20 12:27:33 -03:00

compress.cc

clean up uses of lw_shared_ptr<file>

2015-07-22 11:51:40 +03:00

compress.hh

clean up uses of lw_shared_ptr<file>

2015-07-22 11:51:40 +03:00

disk_types.hh

sstables: switch from vector<> to deque<>

2015-08-23 12:22:49 +03:00

estimated_histogram.hh

estimated histogram mean method should be const

2015-08-25 15:48:24 +03:00

filter.cc

sstables: add method to grab filter size

2015-08-24 19:18:54 -05:00

filter.hh

sstables: simplify filter tracker

2015-08-24 19:17:31 -05:00

hyperloglog.hh

sstables: avoid assert when generating cardinality metadata

2015-06-24 18:58:17 +03:00

key.cc

sstables: add conversion function from sstable key to partition key

2015-08-03 20:17:40 +03:00

key.hh

sstables: add conversion function from sstable key to partition key

2015-08-03 20:17:40 +03:00

metadata_collector.hh

Revert "Merge "Commit log replay" from Calle"

2015-08-27 12:39:08 +03:00

partition.cc

sstables: modify read_indexes so it no longer takes a quantity

2015-08-27 16:44:25 +03:00

row.cc

sstables: allow specification of buffer_size for data_stream

2015-08-27 09:11:13 -05:00

row.hh

sstable: Pull-style read interface

2015-06-03 10:55:34 +03:00

sstables.cc

sstable index: try to read everything in a single run

2015-08-27 09:19:05 -05:00

sstables.hh

sstables: allow specification of buffer_size for data_stream

2015-08-27 09:11:13 -05:00

streaming_histogram.hh

streaming_histogram modify the default constructor

2015-08-12 09:41:19 +03:00

types.hh

Revert "Merge "Commit log replay" from Calle"

2015-08-27 12:39:08 +03:00

writer.hh

clean up uses of lw_shared_ptr<file>

2015-07-22 11:51:40 +03:00