/** Returns this PerfStatValue divided by the argument, field by field. */
public PerfStatValue dividedBy(PerfStatValue dpsv) {
PerfStatValue psv = new PerfStatValue(this.statspec, this.trimspec);
if (this.isFlatline() && dpsv.isFlatline()) {
return null;
}
psv.setArchives(this.archives);
psv.setProductVersion(this.productVersion);
psv.setIsLargerBetter(this.isLargerBetter); // go with the numerator here
psv.setSamples(this.samples.intValue());
if (this.min != null && dpsv.min != null) {
psv.setMin(divide(this.getMin(), dpsv.getMin()));
}
if (this.max != null && dpsv.max != null) {
psv.setMax(divide(this.getMax(), dpsv.getMax()));
}
if (this.maxminusmin != null && dpsv.maxminusmin != null) {
psv.setMaxMinusMin(divide(this.getMaxMinusMin(), dpsv.getMaxMinusMin()));
}
if (this.mean != null && dpsv.mean != null) {
psv.setMean(divide(this.getMean(), dpsv.getMean()));
}
if (this.stddev != null && dpsv.stddev != null) {
psv.setStddev(divide(this.getStddev(), dpsv.getStddev()));
}
return psv;
}
/**
* Translates a StatValue into a PerfStatValue with the specified filter, with the specified
* operations, and the specified trim. For the latter, if start is -1, uses the beginning of the
* statistic's existence, and if end is -1, goes to the end of the statistic's existence.
*/
protected static PerfStatValue getPerfStatValue(
StatSpec statspec, TrimSpec trimspec, StatArchiveReader.StatValue sv) {
long start = trimspec.getStart();
long end = trimspec.getEnd();
sv = sv.createTrimmed(start, end);
if (Log.getLogWriter().finestEnabled()) {
Log.getLogWriter()
.finest(
"PerfStatReader: Trimmed from "
+ trimspec.getStartStr()
+ " ("
+ start
+ ") to "
+ trimspec.getEndStr()
+ " ("
+ end
+ ")");
}
int filter = statspec.getFilter();
double mean = -1;
if (filter == StatArchiveReader.StatValue.FILTER_PERSEC && statspec.getMean()) {
if (start == -1) {
start = sv.getRawAbsoluteTimeStamps()[0];
}
if (end == -1) {
long[] rats = sv.getRawAbsoluteTimeStamps();
end = rats[rats.length - 1];
}
long elapsedSec = (end - start) / 1000;
sv.setFilter(StatArchiveReader.StatValue.FILTER_NONE);
double del = sv.getSnapshotsMaximum() - sv.getSnapshotsMinimum();
mean = del / elapsedSec;
}
sv.setFilter(filter);
// @todo lises see if psv really needs to hang onto specs
PerfStatValue psv = new PerfStatValue(statspec, trimspec);
psv.setIsLargerBetter(sv.getDescriptor().isLargerBetter());
psv.setSamples(sv.getSnapshotsSize());
if (statspec.getMin()) psv.setMin(sv.getSnapshotsMinimum());
if (statspec.getMax()) psv.setMax(sv.getSnapshotsMaximum());
if (statspec.getMaxMinusMin())
psv.setMaxMinusMin(sv.getSnapshotsMaximum() - sv.getSnapshotsMinimum());
if (statspec.getMean()) {
if (filter == StatArchiveReader.StatValue.FILTER_PERSEC) {
psv.setMean(mean);
} else {
psv.setMean(sv.getSnapshotsAverage());
}
}
if (statspec.getStddev()) psv.setStddev(sv.getSnapshotsStandardDeviation());
SortedSet archives = new TreeSet();
StatArchiveReader.ResourceInst[] resources = sv.getResources();
String productVersion = null;
for (int i = 0; i < resources.length; i++) {
String archive = resources[i].getArchive().getFile().getParentFile().getName();
if (productVersion == null) {
productVersion = resources[i].getArchive().getArchiveInfo().getProductVersion();
}
if (!archives.contains(archive)) {
archives.add(archive);
}
}
psv.setArchives(archives);
psv.setProductVersion(productVersion);
return psv;
}