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https://issues.apache.org/jira/browse/KUDU-1235?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15250090#comment-15250090
]
Binglin Chang commented on KUDU-1235:
-------------------------------------
update: also change ASSERT to CHECK in scan
{noformat}
result on i7-4770 CPU @ 3.40GHz (4 core 8 thread):
netaddr hash & 1 client
-----------------------
get 16 20
I0420 15:58:54.828622 4355 get_perf-itest.cc:157] Get total: 151870 QPS:
75932.8
I0420 15:58:56.828722 4355 get_perf-itest.cc:157] Get total: 298395 QPS:
73258.8
I0420 15:58:58.828829 4355 get_perf-itest.cc:157] Get total: 446941 QPS:
74269.1
scan 16 20
I0420 16:29:59.598397 6713 get_perf-itest.cc:161] Scan total: 88845 QPS:
44421.2
I0420 16:30:01.598501 6713 get_perf-itest.cc:161] Scan total: 178006 QPS:
44578.2
I0420 16:30:03.598606 6713 get_perf-itest.cc:161] Scan total: 268647 QPS:
45318.1
netaddr hash & client per thread
--------------------------------
get 16 20
I0420 16:03:42.521334 4640 get_perf-itest.cc:157] Get total: 112199 QPS:
56097.9
I0420 16:03:44.521497 4640 get_perf-itest.cc:157] Get total: 223665 QPS:
55728.5
I0420 16:03:46.521620 4640 get_perf-itest.cc:157] Get total: 334350 QPS:
55339.1
netaddr hash & 1 client & 4096 block size
-----------------------------------------
get 16 20
I0420 16:26:47.690371 6470 get_perf-itest.cc:161] Get total: 165229 QPS:
82612.2
I0420 16:26:49.690470 6470 get_perf-itest.cc:161] Get total: 326884 QPS:
80823.5
I0420 16:26:51.690560 6470 get_perf-itest.cc:161] Get total: 488409 QPS:
80758.9
scan 16 20
I0420 16:26:09.459698 6470 get_perf-itest.cc:161] Scan total: 114776 QPS:
57386.3
I0420 16:26:11.459792 6470 get_perf-itest.cc:161] Scan total: 233997 QPS:
59607.7
I0420 16:26:13.459884 6470 get_perf-itest.cc:161] Scan total: 354734 QPS:
60365.7
{noformat}
> Add Get API
> -----------
>
> Key: KUDU-1235
> URL: https://issues.apache.org/jira/browse/KUDU-1235
> Project: Kudu
> Issue Type: New Feature
> Reporter: Binglin Chang
> Assignee: Binglin Chang
> Attachments: perf-get.svg, perf-scan-opt.svg, perf-scan.svg
>
>
> Get API is more user friendly and efficient if use just want primary key
> lookup.
> I setup a cluster and test get/scan single row using ycsb, initial test shows
> better performance for get.
> {noformat}
> kudu_workload:
> recordcount=1000000
> operationcount=1000000
> workload=com.yahoo.ycsb.workloads.CoreWorkload
> readallfields=false
> readproportion=1
> updateproportion=0
> scanproportion=0
> insertproportion=0
> requestdistribution=uniform
> use_get_api=false
> load:
> ./bin/ycsb load kudu -P workloads/kudu_workload -p sync_ops=false -p
> pre_split_num_tablets=1 -p table_name=ycsb_wiki_example -p
> masterQuorum='c3-kudu-tst-st01.bj:32600' -threads 100
> read test:
> ./bin/ycsb run kudu -P workloads/kudu_workload -p
> masterQuorum='c3-kudu-tst-st01.bj:32600' -threads 100
> {noformat}
> Get API:
> [OVERALL], RunTime(ms), 21304.0
> [OVERALL], Throughput(ops/sec), 46939.54187007135
> [CLEANUP], Operations, 100.0
> [CLEANUP], AverageLatency(us), 423.57
> [CLEANUP], MinLatency(us), 24.0
> [CLEANUP], MaxLatency(us), 19327.0
> [CLEANUP], 95thPercentileLatency(us), 52.0
> [CLEANUP], 99thPercentileLatency(us), 18815.0
> [READ], Operations, 1000000.0
> [READ], AverageLatency(us), 2065.185152
> [READ], MinLatency(us), 134.0
> [READ], MaxLatency(us), 92159.0
> [READ], 95thPercentileLatency(us), 2391.0
> [READ], 99thPercentileLatency(us), 6359.0
> [READ], Return=0, 1000000
> Scan API:
> [OVERALL], RunTime(ms), 38259.0
> [OVERALL], Throughput(ops/sec), 26137.6408165399
> [CLEANUP], Operations, 100.0
> [CLEANUP], AverageLatency(us), 47.32
> [CLEANUP], MinLatency(us), 16.0
> [CLEANUP], MaxLatency(us), 1837.0
> [CLEANUP], 95thPercentileLatency(us), 41.0
> [CLEANUP], 99thPercentileLatency(us), 158.0
> [READ], Operations, 1000000.0
> [READ], AverageLatency(us), 3595.825249
> [READ], MinLatency(us), 139.0
> [READ], MaxLatency(us), 3139583.0
> [READ], 95thPercentileLatency(us), 3775.0
> [READ], 99thPercentileLatency(us), 7659.0
> [READ], Return=0, 1000000
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