Hi everyone, I'm new to the list and especially ZooKeeper. I'm exploring ZK 3.4.5 with a dummy application (hacked up & simple) that is using the C API with async calls. It creates 100,000 znodes, slowly, where each znode has 133 bytes of data. Simple. :)
Although my tool creates znodes slowly (about 84 per second) and CPU / RAM / Network / etc is not at all stressed, I am seeing periodically very long "write" latency times (76ms+) reported by ZooKeeper. My independent analysis confirms what ZooKeeper is reporting. Wow. The one-page PDF file below explains the problem in more detail and includes a chart that shows the periodic write latency delays: https://docs.google.com/file/d/0Bww02z29xbYyUFEtbXQzOG9GVDA/edit?usp=sharing&pli=1 I don't know much about JAVA and haven't started poking into ZooKeeper, but since ZooKeeper is reporting the latency, then it seems to be coming from ZooKeeper itself. Any idea what might be causing this, or how better to diagnose what might be happening? Thanks so much!
