Slow I/O performance on some Cloud Servers

Expected resolution: 12 Oct 2016, 16:00 UTC
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Issue status: Resolved Date:

12 Oct 2016
16:08 UTC

Posted by:

Steve Kemp

We've identified and resolved the underlying cause for this I/O problem now; the cause wasn't one we immediately suspected.

Issue status: Investigating Date:

12 Oct 2016
14:37 UTC

Posted by:

Jamie Nguyen

Sorry for the performance issues you're seeing! It appears that there's one or more problematic servers on head55 and we're trying to resolve this now.

Issue status: Investigating Date:

12 Oct 2016
14:08 UTC

Posted by:

Steve Kemp

We thought we'd tracked down the cause of this, and resolved it, but we're still seeing a small number of machines reporting a slowdown of I/O.

We're continuing to investigate.

Issue status: Investigating Date:

12 Oct 2016
12:24 UTC

Posted by:

Steve Kemp

We've received some reports of slower than usual I/O operations on a small subset of our cloud servers.

We've taken steps to limit some "greedy" guests which were causing I/O starvation, which we believe should minimize this problem, and are currently keeping an eye upon things.

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