バージョン 16 (更新者: wu, 12 年 前)

--

* 4store　配置

* Load performance

* Sparql query performance

4store 配置

$ cd $4STORE_HOME/bin
$ ./4s-backend-setup allie
$ ./4s-backend allie
./4s-import -v allie --format ntriples datapath --model http://myURI.com

Configuration consideration (refer to  http://4store.org/):

Here specify the cluster and segmentation values:

4s-backend-setup --node 0 --cluster 1 --segments 4 demo

The number of segments should be a power of 2, parallelisation depends on segmentation. As a rule of thumb try a power of 2 close to twice as many segments as there are physical CPUs or CPU cores on the system, but depending on the workload you may find less or more work better.

Load Performance

Allie upload

Approach 1: Default setting (2 segments)

About 12 minutes

Approach 2: 8 segments

About 13 minutes

Segment setting makes no too much difference.

PDBJ upload

Over 4 days(4.45 days)

loadtime Cell Cycle Ontology Allie PDBj
1st time 2mins 12mins 6408mins
2nd time 2mins 12mins
average 2mins 12 mins

Sparql query performance

Cell cycle query

Query\time(ms) time 1 time 2 time 3 time 4time 5
case1 54 53 55 65 62
case2 16 17 17 22 23
case3 2244 1229 1246 1224 1243
case4 13 13 12 14 15
case5 34 34 34 33 31
case6 68 67 69 65 55
case7 22 21 21 22 25
case8 67 67 67 66 68
case9 2035 2035 2033 2036 2036
case10 7 8 8 8 6
case11 6 6 6 6 6
case12 1064 1063 2063 2063 2062
case139 8 9 8 8
case14 8 8 8 7 6
case15 *****
case16 XX X X X
case17 XX X X X
case18 XX X X X
case19 15 16 15 16 15

X: parser error: syntax error, unexpected COUNT, expecting '(' or '?' or '$' or '*' on line 4.

*: No response within 2 hours.

Allie query

Query\time(ms) time 1 time 2 time 3 time 4time 5
case1 XXXXX
case2 220 225 212 222 215
case3 XXXXX
case4 XXXXX
case5 68245 64945 67070 67703 60794

X: Do not suppot lang() function.

PDBJ query

Query\time(ms) time 1 time 2 time 3 time 4time 5
case1 3639 1024 1026 1024 1026
case2 1024 2027 2024 1027 1024
case3 97728 131 134 128 134
case4 2027 1023 2027 2024 1023