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  1. Data Management
  2. DM-11879

Write latency requirements for retrieval of image products

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    • Team:
      DM Science

      Description

      In RFC-325 it is mentioned that we need to understand the latency requirements for accessing image products. The RFC mentions the following latencies:

      • to display a movie strip in a UI (expected very short latency; ~1-2 or below)
      • to deliver scientifically useful postage stamps for subsequent download or batch processing (longer latency ~20-30 seconds, may be acceptable, assuming decent throughput).

      This ticket, though, should also include a latency for virtual product generation (maybe different for each virtual product), and a latency for cutouts of pre-existing products such as coadds.

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            tjenness Tim Jenness added a comment -

            Do these latencies include the DAX VO layer?

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            tjenness Tim Jenness added a comment - Do these latencies include the DAX VO layer?
            Hide
            tjenness Tim Jenness added a comment -

            Are these OSS, DMSR or LDM-554 requirements? I think we've been edging towards defining performance requirements at DMSR level and flowing them down directly to LDM-554 test plan.

            Show
            tjenness Tim Jenness added a comment - Are these OSS, DMSR or LDM-554 requirements? I think we've been edging towards defining performance requirements at DMSR level and flowing them down directly to LDM-554 test plan.
            Hide
            gpdf Gregory Dubois-Felsmann added a comment -

            Tim Jenness I think this work was basically done a long time ago. Isn't this what led to DMS-REQ-0373 though DMS-RES-0378? (Added by LCR-1344 from May-September 2018.)

            I suggest we close this ticket and open a new one if there are any specific open questions.

            Show
            gpdf Gregory Dubois-Felsmann added a comment - Tim Jenness I think this work was basically done a long time ago. Isn't this what led to DMS-REQ-0373 though DMS-RES-0378? (Added by LCR-1344 from May-September 2018.) I suggest we close this ticket and open a new one if there are any specific open questions.
            Hide
            gpdf Gregory Dubois-Felsmann added a comment -

            Review request: just "can we close this ticket given the completion of LCR-1344?"

            Show
            gpdf Gregory Dubois-Felsmann added a comment - Review request: just "can we close this ticket given the completion of LCR-1344?"
            Hide
            tjenness Tim Jenness added a comment -

            Yes, looks like this was done in those requirements.

            Show
            tjenness Tim Jenness added a comment - Yes, looks like this was done in those requirements.
            Hide
            gpdf Gregory Dubois-Felsmann added a comment -

            Closed as done.  Will create a new ticket when progress on virtual data product decisions gets far enough along.

            Show
            gpdf Gregory Dubois-Felsmann added a comment - Closed as done.  Will create a new ticket when progress on virtual data product decisions gets far enough along.

              People

              • Assignee:
                gpdf Gregory Dubois-Felsmann
                Reporter:
                tjenness Tim Jenness
                Reviewers:
                Tim Jenness
                Watchers:
                Gregory Dubois-Felsmann, Leanne Guy, Tim Jenness, Xiuqin Wu [X] (Inactive)
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                • Created:
                  Updated:
                  Resolved: