[erlang-questions] user process suspended

Fred Hebert <>
Tue Sep 22 16:42:58 CEST 2015


On 09/22, Samuel wrote:
>
>What do you mean with IO stuff stalling? Temporarily or permanently?
>We do send quite some io, but the systems stops to io when this
>happens and never recovers (we need to restart the node).
>

It's been a while, but I do believe it was temporary for us. Like the 
EC2 instances output would drop from say 10MB/s capacity down to 150kb/s 
for blips of anywhere between 2 and 10 minutes. The degradation in 
performance all but stalled everything we had that kept expecting 
multiple MB/s of output to be possible.


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