private void hash(CachedUrlSet set, MessageDigest dig, boolean namesOnly) throws IOException {
CachedUrlSetHasher hasher = null;
if (namesOnly) {
hasher = set.getNameHasher(dig);
} else {
hasher = set.getContentHasher(dig);
}
int bytesHashed = 0;
long timeTaken = System.currentTimeMillis();
while (!hasher.finished()) {
bytesHashed += hasher.hashStep(256);
}
timeTaken = System.currentTimeMillis() - timeTaken;
if ((timeTaken > 0) && (bytesHashed > 500)) {
System.out.println("Bytes hashed: " + bytesHashed);
System.out.println("Time taken: " + timeTaken + "ms");
System.out.println("Bytes/sec: " + (bytesHashed * 1000 / timeTaken));
} else {
System.out.println("No time taken, or insufficient bytes hashed.");
System.out.println("Bytes hashed: " + bytesHashed);
System.out.println("Time taken: " + timeTaken + "ms");
}
}
private void measureHashSpeed(SimulatedArchivalUnit sau) throws Exception {
MessageDigest dig = null;
try {
dig = MessageDigest.getInstance("SHA-1");
} catch (NoSuchAlgorithmException ex) {
fail("No algorithm.");
}
CachedUrlSet set = sau.getAuCachedUrlSet();
CachedUrlSetHasher hasher = set.getContentHasher(dig);
SystemMetrics metrics = theDaemon.getSystemMetrics();
int estimate = metrics.getBytesPerMsHashEstimate(hasher, dig);
// should be protected against this being zero by MyMockSystemMetrics,
// but otherwise use the proper calculation. This avoids test failure
// due to really slow machines
assertTrue(estimate > 0);
long estimatedTime = set.estimatedHashDuration();
long size = ((Long) PrivilegedAccessor.getValue(set, "totalNodeSize")).longValue();
assertTrue(size > 0);
System.out.println("b/ms: " + estimate);
System.out.println("size: " + size);
System.out.println("estimate: " + estimatedTime);
assertEquals(estimatedTime, theDaemon.getHashService().padHashEstimate(size / estimate));
}
