Try : USB -> HDD. Please dont use an SSD.
You are not testing correctly. On Wed, Apr 1, 2020 at 8:56 AM Ed Greshko <ed.gres...@greshko.com> wrote: > On 2020-04-01 09:14, Roger Heflin wrote: > > To have the issue it helps to have the reading disk be a quite a bit > > faster than the receiving disk that way the reading disk can easily > > get ahead and fill up the write cache faster than the reading disk can > > process it (it backs up into the writecache). > > > > So USB3.0 3.5-7200rpm or an SSD will easily overrun a standard laptop > > 5900 rpm 2.5" hard disk. > > This was not done on a quiet system CPU wise, boinc jobs running. But not > much other I/O going on. > > SDD--->USB-Flash > > real 16m38.608s > user 0m1.416s > sys 3m37.379s > > USB-Flash--->SDD > > real 6m37.671s > user 0m0.662s > sys 1m4.984s > > I then found an old laptop HDD in a USB 2.0 enclosure. Reading from the > SDD should be much faster > than writing to the HDD. > > SDD--->HDD > > real 30m53.407s > user 0m0.942s > sys 2m46.756s > > HDD--->SDD > > real 32m48.615s > user 0m0.896s > sys 1m9.483s > > And, for completeness > > SDD--->SDD > > real 4m58.406s > user 0m0.517s > sys 1m8.402s > > No issues at anytime with stability or slowdown in all cases. > > > -- > The key to getting good answers is to ask good questions. > _______________________________________________ > users mailing list -- users@lists.fedoraproject.org > To unsubscribe send an email to users-le...@lists.fedoraproject.org > Fedora Code of Conduct: > https://docs.fedoraproject.org/en-US/project/code-of-conduct/ > List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines > List Archives: > https://lists.fedoraproject.org/archives/list/users@lists.fedoraproject.org > -- Regards, Sreyan Chakravarty
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