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Strange striped bars in Waterfall View - Printable Version

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Strange striped bars in Waterfall View - Emil_ - 12-04-2018 07:28 PM

Hi

Can someone explain what it means when the bars are striped like in this test run
https://www.webpagetest.org/result/181204_8H_f140be7fa6f978f7cdc895b32b7a177e/1/details/#waterfall_view_step1

They are not solid color for connect and download content part, they are mixed. It feels that something is wrong here.

/Emil


RE: Strange striped bars in Waterfall View - pmeenan - 12-05-2018 08:59 PM

Each of the dark stripes are when data is coming in from that request. Since there are a bunch in parallel they are competing for bandwidth and the data is basically interleaved across multiple requests.

It looks like the server isn't sending the HTTP/2 responses correctly since Chrome requests them with the "exclusive" bit and in an explicit order.


RE: Strange striped bars in Waterfall View - Emil_ - 12-06-2018 12:55 AM

Hi

Thanks for the replay. How can you see that "Chrome request them with the exclusive bit and in an explict order"? Is there somewhere on webpagetest I can see that?