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marcan42's profile
Hector Martin
Hector Martin
Hector Martin
@marcan42

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Hector Martin

@marcan42

If it ain't broke, I'll fix it! I'm porting Linux to Apple Silicon Macs at @AsahiLinux. http://patreon.com/marcan  | http://github.com/sponsors/marcan 

Tokyo, Japan
marcan.st
Joined May 2009

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    1. whitequark‏ @whitequark 18 Mar 2018
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      first-world problems: the *slowest* broadband plan I can get is 300 Mbps up 300 Mbps down. it's 50 USD/month without commitment. I don't even need that much! the fastest one I can get from the same ISP is 10 Gbps down 2.5 Gbps up, 345 USD/month.

      9 replies 6 retweets 45 likes
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    2. whitequark‏ @whitequark 18 Mar 2018
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      I cannot possibly fathom what one could use 10 Gbps of bandwidth for. last time I downloaded a lot of torrents my drive array bottomed out at around 180 Mbps, bottlenecked by random I/O. you'd need striped RAID and a beefy CPU and I/O subsystem to handle even 1 Gbps

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      Hector Martin‏ @marcan42 18 Mar 2018
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      Replying to @whitequark

      3-4Gbps is easy with standard RAID on SATA rust with sequential I/O. Torrents are more IOPS-heavy, but at that point you'd set it up to download to an SSD/NVMe and move to HDD when complete. 461MB/s off my RAID6 at home. I always peg GigE with NFS.

      10:51 PM - 18 Mar 2018
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        2. whitequark‏ @whitequark 18 Mar 2018
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          Replying to @marcan42

          I had a rather unusual workload where I was downloading dozens of TB of torrents simultaneously (and it wasn't really worth going RAID or SSD anyway because hashing the blocks became the bottleneck slightly above random I/O being so)

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        3. Hector Martin‏ @marcan42 18 Mar 2018
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          Replying to @whitequark

          Fair enough. Personally, I could totally use a 1Gbps pipe since I shuttle data to/from servers often enough (backups, etc), but with a 100mbps connection my bottleneck tends to be the backbone. International peering seems to be getting worse rather than better.

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