restarted BDBOptimized store - unfortunately, benchmarks show that it is much slower than the normal sleepcat store in every way - so I guess we never merge this :)bdbOptimized

1 files changed, 56 insertions, 0 deletions

diff --git a/examples/benchmark.py b/examples/benchmark.py
new file mode 100644
index 00000000..9f7ea963
--- /dev/null
+++ b/examples/benchmark.py
@@ -0,0 +1,56 @@
+import sys
+import os
+import time
+import random
+
+import rdflib
+
+def resource(n):
+    return rdflib.URIRef("urn:resource:%d"%n)
+
+def prop(n):
+    return rdflib.URIRef("urn:property:%d"%n)
+
+
+def createData(g,N, M=80):
+
+    for x in range(N):
+        g.add(( resource(random.randint(0,M)),
+                prop(random.randint(0,M)),
+                resource(random.randint(0,M))))
+
+if __name__=='__main__':
+
+    g=rdflib.Graph(sys.argv[1])
+
+    g.open(os.tempnam(), create=True)
+    start=time.time()
+    #g.load("foaf890K.rdf")
+    createData(g,300000)
+    print len(g)
+    read=time.time()
+    sys.stderr.write("Reading took %.2fs\n"%(read-start))
+    
+    x=set(g.subjects(prop(5), resource(5)))
+    t1=time.time()
+    sys.stderr.write("Subjects took %.2fs\n"%(t1-read))
+    
+    x=set(g.predicates(resource(5), resource(5)))
+    t2=time.time()
+    sys.stderr.write("Predicates took %.2fs\n"%(t2-t1))
+
+    x=set(g.objects(resource(5), prop(5)))
+    t3=time.time()
+    sys.stderr.write("Objects took %.2fs\n"%(t3-t2))
+
+    x=set(g.subject_objects(prop(5)))
+    t4=time.time()
+    sys.stderr.write("SubjectObjects took %.2fs\n"%(t4-t3))
+
+    x=set(g.subject_predicates(resource(5)))
+    t5=time.time()
+    sys.stderr.write("SubjectPredicates took %.2fs\n"%(t5-t4))
+
+    x=set(g.predicate_objects(resource(5)))
+    t6=time.time()
+    sys.stderr.write("SubjectPredicates took %.2fs\n"%(t6-t5))