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Answered
Hi All — Has Anyone Run Into Degrading Download Performance With Clearml Storage Manager?

Hi all — has anyone run into degrading download performance with ClearML Storage Manager?
I’m spinning up an EC2 instance (Dockerized) with the AutoScaler and downloading ~3 TB (≈3000 files, ~1 GB each) sequentially.

  • The first files start at ~400 MB/s
  • Throughput then drops to ~100 MB/s
  • Eventually degrades to ~10 MB/sIt is really one file after another - no parallelization. What’s puzzling is that it doesn’t seem to be an instance or disk limitation: if I SSH into the same instance (while ClearML is stuck at ~100 MB/s) and use the AWS CLI to download to the same drive, I get ~300 MB/s again.
    Has anyone seen this before or found a workaround?
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Posted 8 days ago
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GrumpyDog7
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Hi @<1806135344731525120:profile|GrumpyDog7> , this might be related to the boto3 settings, since ClearML uses boto3 under the hood to downloads from S3. You can find the default settings here , where you can also change them using the clearml.conf configuration file (or any of the AWS boto3 env vars which boto3 can automatically detect). Also supported in this section are connect_timeout (default 60), read_timeout (default 60), stream_connections (default 128) and signature_version

  
  
Posted 6 days ago
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SuccessfulKoala55
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Hi @<1806135344731525120:profile|GrumpyDog7> , what about the load on the server itself? Also, are you downloading from the files server or from some arbitrary source?

  
  
Posted 7 days ago
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CostlyOstrich36
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  • The server is not doing anything expect downloading
  • This is S3 data transfer within the same zone
  
  
Posted 7 days ago
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GrumpyDog7
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8 days ago
6 days ago
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