Re: iostat and dashboard freezing

[Reed Dier <reed.dier@xxxxxxxxxxx>]

I'm currently seeing this with the dashboard disabled.

My instability decreases, but isn't wholly cured, by disabling prometheus and rbd_support, which I use in tandem, as the only thing I'm using the prom-exporter for is the per-rbd metrics.

ceph mgr module ls

{

    "enabled_modules": [

        "diskprediction_local",

        "influx",

        "iostat",

        "prometheus",

        "rbd_support",

        "restful",

        "telemetry"

    ],

I'm on Ubuntu 18.04, so that doesn't corroborate with some possible OS correlation.

Thanks,

Reed

On Aug 27, 2019, at 8:37 AM, Lenz Grimmer <lgrimmer@xxxxxxxx> wrote:

Hi Jake,

On 8/27/19 3:22 PM, Jake Grimmett wrote:

That exactly matches what I'm seeing:

when iostat is working OK, I see ~5% CPU use by ceph-mgr
and when iostat freezes, ceph-mgr CPU increases to 100%

Does this also occur if the dashboard module is disabled? Just wondering
if this is isolatable to the iostat module. Thanks!

Lenz

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