On 01/10/2017 03:40 PM, Sela, Guy wrote: > Hi, Hello,
no MD-SAL in sight, -mdsal-dev, +controller-dev. > > > > I’m running scale tests for netvirt, using 24G heap, G1 collector, on > stable/boron. > > I’m trying to reach a mesh of tunnels between many computes. > > At about 100 computes, I get the exception below. > > Last GC before the exception got me to 3G occupied heap and 21G free heap. A heap dump is really needed to understand what is going on. > From what I understand, the MD-SAL tries to serialize an object, and > because it is too big, it gets OOM. > > 1) What is actually happening here? Is this a periodic flush to the > disk of the configuration data store? Looks like a snapshot operation, i.e. roll-up of the journal. > 2) Is there anything to do to avoid this scenario? Could the > objects be serialized in chunks? Depends on what the heap looks like. Snapshot has to be assembled as a byte[], there is not much we can do right now. Bye, Robert
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