Opened at 2012-12-05T03:32:23Z
Last modified at 2020-10-30T12:35:44Z
#1885 closed defect
cloud backend: redundant reads of chunks from S3 when downloading large MDMF file — at Initial Version
| Reported by: | davidsarah | Owned by: | |
|---|---|---|---|
| Priority: | normal | Milestone: | 1.15.0 |
| Component: | code-storage | Version: | 1.9.2 |
| Keywords: | cloud-backend cache download performance | Cc: | |
| Launchpad Bug: |
Description
I uploaded a 7.7 MiB video as an MDMF file using the cloud backend (as of 1819-cloud-merge/022796fb), and then downloaded it. From flogtool tailing the storage server, I saw that it was reading the same chunks multiple times during the download. That suggests that the chunk cache is not operating well enough.
The file was being downloaded by playing it as a video in Chromium; I don't think that makes a difference.
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