Well I have implemented count using objectCountForToManyRelationship, and found
it is MUCH worse than before at the deployment site (whilst it runs like a
charm for me at my testing machine).
After lots of testing it seems the real bottleneck is the database query
itself. Lately, I have implemented this kind of count-of
===
// my ERXEnterpriseObject subclass, a superclass of all my EOs
static ocs_count_n=0,ocs_count_time=0
def ocs_count_of(String key) {
def relationship=valueForKey(key)
boolean fault=EOFaultHandler.isFault(relationship)
if (!fault) return relationship.count()
ocs_count_n++
def time=System.currentTimeMillis()
def n=ERXEOControlUtilities.objectCountForToManyRelationship(this,key)
time=System.currentTimeMillis()-time
ocs_count_time+=time
println "COUNTOF: $ocs_count_n: $time, average
${(int)(ocs_count_time/ocs_count_n)} ms"
return n?:0
}
===
Now, testing on my development machine (2.53 GHz i5, 8 GB RAM) I am getting
logs like
COUNTOF: 18: 18, average 17 ms
COUNTOF: 19: 14, average 17 ms
COUNTOF: 20: 15, average 17 ms
COUNTOF: 21: 14, average 17 ms
On the deployment machine though (2.26 GHz QuadCore Xeon, 24 GB RAM) the logs
are sort of different
COUNTOF: 18: 1911, average 1789 ms
COUNTOF: 19: 1905, average 1795 ms
COUNTOF: 20: 1883, average 1799 ms
COUNTOF: 21: 1883, average 1803 ms
which sort of explains why the page generation is terribly slow.
I would be grateful for an advice to find and fix the cause of this slow DB
access; any idea?
Both the machines run Groovy 2.3.8 / WebObjects 5.4.3
The deployment machine runs Java 1.6.0_65 / Mac OS X 10.6.8 / FrontBase
5.2.1g-64 bit (server on localhost, along with all the WO applications).
My test machine runs Java 1.7.0_13 / Mac OS X 10.8.5 / FrontBase 7.2.18 64 bit
(localhost server, too); might anything of this cause the vast difference? Does
not seem to me, but of course, I might be overlooking something of importance.
Thanks a lot,
OC
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