Marcus Eriksson created CASSANDRA-4282: ------------------------------------------
Summary: Improve startup time by making row cache population multi
threaded
Key: CASSANDRA-4282
URL: https://issues.apache.org/jira/browse/CASSANDRA-4282
Project: Cassandra
Issue Type: Improvement
Reporter: Marcus Eriksson
Priority: Minor
Fix For: 1.2
Attached patch multi threads the row cache population
my small tests show improvements atleast;
{code}
- 4 cores
- 11G stress-generated data
- page cache dropped between runs
single platter spinning disk:
single threaded:
INFO 10:18:21,365 completed loading (245562 ms; 311381 keys) row cache for
Keyspace1.Standard1
INFO 10:32:43,738 completed loading (255106 ms; 311381 keys) row cache for
Keyspace1.Standard1
multi threaded:
INFO 10:22:47,567 completed loading (213905 ms; 311381 keys) row cache for
Keyspace1.Standard1
INFO 10:27:26,873 completed loading (214514 ms; 311381 keys) row cache for
Keyspace1.Standard1
ssd;
single threaded:
INFO 10:40:49,079 completed loading (103883 ms; 311381 keys) row cache for
Keyspace1.Standard1
INFO 10:43:45,799 completed loading (106913 ms; 311381 keys) row cache for
Keyspace1.Standard1
multi threaded:
INFO 10:38:20,798 completed loading (57617 ms; 311381 keys) row cache for
Keyspace1.Standard1
INFO 10:47:20,339 completed loading (56682 ms; 311381 keys) row cache for
Keyspace1.Standard1
{code}
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