Tux Machines

today's howtos

Posted by Roy Schestowitz on Apr 18, 2023,

updated Apr 18, 2023

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wget is much faster than scp or rsync

=> ↺ wget is much faster than scp or rsync

I needed to copy 3TB of data from my old homeserver to my new one. I decided to spend as much time "sharpening my axe" as possible. I spent ages dicking around with ZFS configs, tweaking BIOS settings, flashing firmware, and all the other yak-shaving necessary for convincing yourself you're doing useful work.

It's very likely that…

=> ↺ It's very likely that…

…if you're using javascript:void(0) as the value of the href attribute, the element you're actually looking for is .

Some important ARC memory statistics exposed by ZFS on Linux (as of ZoL 2.1)

=> ↺ Some important ARC memory statistics exposed by ZFS on Linux (as of ZoL 2.1)

As covered, the critical ARC size parameter for determining if it will grow, shrink, or stay the same size is 'c', also known as 'arc_c', which is what the ARC considers the overall target size. ZFS also exposes three memory sizes, memory_all_bytes, memory_free_bytes, and memory_available_bytes. The 'all' number is how much total RAM ZFS thinks the system has; the 'free' number is how much memory ZFS thinks is free in general, and 'available' is how much memory ZFS feels it has available to it at the moment, which can go negative. If the 'available' number goes negative, the ARC shrinks; if it's (enough) positive, the ARC can grow.

Setup Username and Email in Git

=> ↺ Setup Username and Email in Git

So, you installed Git on your system, cloned a Git repo, made some changes and now want to commit your changes.

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