this post was submitted on 24 Nov 2023
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Data Hoarder
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We are digital librarians. Among us are represented the various reasons to keep data -- legal requirements, competitive requirements, uncertainty of permanence of cloud services, distaste for transmitting your data externally (e.g. government or corporate espionage), cultural and familial archivists, internet collapse preppers, and people who do it themselves so they're sure it's done right. Everyone has their reasons for curating the data they have decided to keep (either forever or For A Damn Long Time (tm) ). Along the way we have sought out like-minded individuals to exchange strategies, war stories, and cautionary tales of failures.
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I ran an iperf3 test and noticed that my network connection seemed to be maxing out at 6 Gb/sec (750 MB/sec). So I changed NICs on the client machine to use the onboard 10 Gbit NIC (Marvell AQtion) instead of the Cisco/Intel X710-DA. It seems like it was a NIC issue with the X710-DA because now I’m getting way faster speeds. So at this point I’m wondering if it’s a driver issue with the X710-DA, the SFP+ module, or the NIC itself. But at least I know now what was causing the bottleneck.
Before (Cisco/Intel X710-DA):
[SUM] 0.00-10.00 sec 7.07 GBytes 6.07 Gbits/sec sender [SUM] 0.00-10.00 sec 7.07 GBytes 6.07 Gbits/sec receiver
After NIC Switch (Marvell AQtion):
[SUM] 0.00-10.00 sec 11.0 GBytes 9.48 Gbits/sec receiver