I connect to the H2 database with the option WRITE_DELAY=0.
After some profiling sessions, I noticed that the thread
org.h2.store.WriterThread takes a lot CPU time even if none inserts/
updates are made.
So after checking the code I saw the following lines:
// TODO log writer: could also flush the dirty cache when
there is
// low activity
// wait 0 mean wait forever
int wait = writeDelay > 0 ? writeDelay : 1;
try {
Thread.sleep(wait);
} catch (InterruptedException e) {
// ignore
}
It means that the WriterThread is wake up every millisecond and flush
the transaction log.
Is it the expected behaviour, if no did you plan fix it ?
Thanks for your answer,
Xavier
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