Re: [DISCUSS] CPU flame graph for a job vertex in web UI.

I've created FLINK-13550 to track the issue. Is there any committer who'd be willing to "shepherd this effort"? :) Thanks, D. On Fri, Aug 2, 2019 at 10:22 AM David Morávek wrote: > Hi Paul, for now I only plan to add the one based on java sta

Re: [DISCUSS] CPU flame graph for a job vertex in web UI.

Hi Paul, for now I only plan to add the one based on java stack traces. On Fri, Aug 2, 2019 at 9:34 AM Paul Lam wrote: > Hi David, > > Thanks for the new feature! I think the flame graph would be a useful tool > to understand the state of job executions, and it looks good too. +1 for > this. > >

Re: [DISCUSS] CPU flame graph for a job vertex in web UI.

Hi David, Thanks for the new feature! I think the flame graph would be a useful tool to understand the state of job executions, and it looks good too. +1 for this. And a minor question: do we plan to support multiple kinds of flame graphs? It would be great if we have both on-cpu and off-cpu fl

Re: [DISCUSS] CPU flame graph for a job vertex in web UI.

Big +1 for this helpful feature :) On 08/02/2019 13:54, Jark Wu wrote: Hi David, The demo looks charming! I think it will definitely help a lot when performance tuning. A big +1 for this. I cc-ed Yadong who's one of the main contributors of the new Web UI. Maybe he can give some help on the fro

Re: [DISCUSS] CPU flame graph for a job vertex in web UI.

Hi David, The demo looks charming! I think it will definitely help a lot when performance tuning. A big +1 for this. I cc-ed Yadong who's one of the main contributors of the new Web UI. Maybe he can give some help on the front end. Regards, Jark On Fri, 2 Aug 2019 at 04:26, David Morávek wrote

Re: [DISCUSS] CPU flame graph for a job vertex in web UI.

Hi Till, thanks for the feedback! These endpoints are only called when the vertex is selected in the UI, so there should be any heavy RPC load. For back-pressure, we only sample top 3 calls of the stack (depth = 3). For the flame-graph, we want to sample the whole stack trace and we need different

Re: [DISCUSS] CPU flame graph for a job vertex in web UI.

Hi David, thanks for starting this discussion. I like the idea of improving insights into Flink's execution and I believe that a flame graph could be helpful. I quickly glanced over your changes and I think they go in a good direction. One idea could be to share the `StackTraceSample` produced by

[DISCUSS] CPU flame graph for a job vertex in web UI.

Hello, While looking into Flink internals, I've noticed that there is already a mechanism for stack-trace sampling of a particular job vertex. I think it may be really useful to allow user to easily render a cpu flamegraph in a new UI for a selected