Hi, I am currently trying to download multiple SRA repositories and for this installed sra-toolkit and I use the prefetch SRRs command. I am however facing reeeeeally slow download speed (in the order of 100ko/s to 1mo/s). I checked with my IT support and the the limitation is not coming from my side.
prefetch SRR12118334 2022-11-16T09:27:32 prefetch.3.0.0: Current preference is set to retrieve SRA Normalized Format files with full base quality scores. 2022-11-16T09:27:32 prefetch.3.0.0: 1) Downloading 'SRR12118334'... 2022-11-16T09:27:32 prefetch.3.0.0: SRA Normalized Format file is being retrieved, if this is different from your preference, it may be due to current file availability. 2022-11-16T09:27:32 prefetch.3.0.0: Downloading via HTTPS...
wget with direct ftp link does not work better.
I feel this is not the normal DL speed, and wonder what could be wrong and how to get files faster ? Thx
Yes thx, I tried through the sra-explorer website (and also tried aspera installation and links) but end up with same extra slow download... (which is why I feel smthg must be problematic on my side).
It's also death slow for me. Probably some server issues at their side.
It took perhaps 15 sec to prefetch the SRR# above. Looks like a 653M file. Worth trying again.
Damn... I am retrying and I am downloading at 232KiB/s... How to diagnose from where the slowliness is originating ?
EDIT: the problem was solved by itself, same cmd line last friday produced a +16Mo/s download...