func (w *WAL) sync() error {
if w.encoder != nil {
if err := w.encoder.flush(); err != nil {
return err
}
}
start := time.Now()
err := fileutil.Fdatasync(w.tail().File)
syncDurations.Observe(float64(time.Since(start)) / float64(time.Second))
return err
}
func (w *WAL) sync() error {
if w.encoder != nil {
if err := w.encoder.flush(); err != nil {
return err
}
}
start := time.Now()
err := fileutil.Fdatasync(w.tail().File)
duration := time.Since(start)
if duration > warnSyncDuration {
plog.Warningf("sync duration of %v, expected less than %v", duration, warnSyncDuration)
}
syncDurations.Observe(duration.Seconds())
return err
}