On 10 Jan 2017, at 09:22, Ludwig Krispenz <lkris...@redhat.com> wrote:
> this is a hang inside BerkeleyDB and we have so far not been able to resolve 
> it, also with Oracle support. The weird thing is that from the code in BDB 
> this should not be possible, but it is happening. Ther is a suspicion that it 
> could be an effect of VMs, where the wrong page is accessed, but no further 
> evidence on this.

I can confirm we're we are running in a VM (ESXi 6.0), which gives me a few 
ideas. I've migrated our instance to faster storage and to a host topologically 
closer to the storage array to reduce latency.

> You can try to change the timing pattern of checkpointing, eg by changing the 
> checkpoint interval or the dbcache size, but there is no guarantee it will 
> help.

I'll give that a try.

Is there any additional telemetry you would like me to capture if it occurs 


Adam Bishop

  gpg: E75B 1F92 6407 DFDF 9F1C  BF10 C993 2504 6609 D460


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