On 4/22/2011 11:21 AM, tnb@xxxxxxxxxxxxxxxx wrote:
Hi everybody!
I have installed Tomcat6 and Thredds 4.2, and everything is working
fine, i just have some questions about performance on the access of
large aggregated dataset.
I am serving some aggregated data (about 38 Gb) and when i try to
acess the Dataset Access Form from the catalog, thredds spend too much
time to show me the page.
can you send the aggregation element?
I try enable all the cache options (netcdffile cache, aggregation
cache and netcdfdataset cache), but it still take a lot of time (about
3 minutes) to open the Data Acess Form and consequentily to acess the
data.
does that happen only the first time? what about the second time ?
Is this behavior normal with this size of aggregate dataset?
This is my cache options in threddsConfig.xml
...
<AggregationCache>
<scour>-1 hours</scour>
why -1 ?
<maxAge>30 days</maxAge>
</AggregationCache>
<NetcdfFileCache>
<minFiles>200</minFiles>
<maxFiles>400</maxFiles>
<scour>30 min</scour>
</NetcdfFileCache>
<NetcdfDatasetCache>
<minFiles>100</minFiles>
<maxFiles>200</maxFiles>
<scour>30 min</scour>
</NetcdfDatasetCache>
...
Did i forgeted some aditional setup option?
Also i have noted that in the directory
$TOMCAT/content/thredds/cache/agg, the filename of the caches is
ending with #null,
(e.g. reanalise-ncep1.nc#null) is there something wrong during the
creation of the cache?
Thanks for attention!
Tiago Bomventi
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