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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. Hector Martin‏ @marcan42 5 Jul 2019
      • Report Tweet
      • Report NetzDG Violation

      Okay, why does `swapoff` exist on Linux? It's completely useless as far as I can tell. It's been running for 24h to swap in like 1.5GB of used swap or so, on a largely idle server with >32GB free RAM. How can it be *this* hilariously inefficient?

      12 replies 3 retweets 62 likes
      Show this thread
    2. Pascal Ernster  🏳️‍🌈 🇪🇺 🇱🇺‏ @srslypascal 6 Jul 2019
      • Report Tweet
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      Replying to @marcan42

      The kernel has supported memory hotplugging for more than 10 years, so instead of bothering with swap, just stroll by your local hardware store and get an additional DIMM… 😈 https://www.kernel.org/doc/html/latest/admin-guide/mm/memory-hotplug.html …

      2 replies 0 retweets 1 like
    3. Hector Martin‏ @marcan42 6 Jul 2019
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      Replying to @srslypascal

      Tell that to distro installers that automatically add swap by default, for no reason. (also almost nothing actually supports hot-plugging DIMMs).

      2 replies 0 retweets 8 likes
    4. Pascal Ernster  🏳️‍🌈 🇪🇺 🇱🇺‏ @srslypascal 6 Jul 2019
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      Replying to @marcan42

      TBH, I've given up on distro installers. Last time I checked, neither RHEL nor Fedora nor Ubuntu nor Debian were even able to allow something as simple as "btrfs subvolumes on top of LVM" - and I didn't even try to stack that on top of LUKS.

      1 reply 0 retweets 4 likes
    5. Pascal Ernster  🏳️‍🌈 🇪🇺 🇱🇺‏ @srslypascal 6 Jul 2019
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      Replying to @srslypascal @marcan42

      I just install by hand using goot old chroot these days. pacstrap for Archlinux, debootstrap for Debian/Ubuntu, and when I'm feeling an urgent desire for strong pain, there's still rpm --root and [ yum | dnf ] --installroot for those RPM-based disgraces to technology.

      1 reply 0 retweets 2 likes
    6. Hector Martin‏ @marcan42 6 Jul 2019
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      Replying to @srslypascal

      Hey I have a script to install Gentoo systems off of my custom binpackage repository, using ROOT=<foo> emerge, without using an official stage3.

      1 reply 0 retweets 3 likes
    7. Tim Rühsen‏ @ruehsen 6 Jul 2019
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      Replying to @marcan42 @srslypascal

      Just disable swap after standard install (if expert mode doesn't allow to unconfigure it). Keep the partition for later use or merge it with your main partition (there are tools). I don't use swap since years.

      1 reply 0 retweets 0 likes
    8. Hector Martin‏ @marcan42 6 Jul 2019
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      Replying to @ruehsen @srslypascal

      Yes, I know how to get rid of swap. That's not the point. The point is that it's 2019 and the default is still to add a useless swap partition. Defaults matter, because not everyone knows to get rid of it.

      3 replies 0 retweets 6 likes
    9. Pascal Ernster  🏳️‍🌈 🇪🇺 🇱🇺‏ @srslypascal 6 Jul 2019
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      Replying to @marcan42 @ruehsen

      Well, it's also 2019 and people configuring webservers still worry/care about clients that only support TLS 1.0 or that don't support SNI or ECDSA, and software developers still worry/care about people still using GCC 4.x…

      1 reply 0 retweets 1 like
      Hector Martin‏ @marcan42 6 Jul 2019
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      Replying to @srslypascal @ruehsen

      At least we moved on from SSLv3 and GCC 2.96...

      8:02 AM - 6 Jul 2019
      • 4 Likes
      • remoteChris #rc3 The Emperor NullMind Pascal Ernster 🏳️‍🌈🇪🇺🇱🇺
      0 replies 0 retweets 4 likes

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