On Wed, Jul 5, 2023 at 7:59 PM Grant Taylor via COFF <coff(a)tuhs.org> wrote:
On 7/5/23 4:48 PM, Dan Cross wrote:
I thought some folks here might find this
interesting. Someone else
today reminded me of tilde.town, which is a publicly accessible
machine running Linux. They have a shocking amount of use:
tilde% uname -a
Linux tilde.town 5.15.0-58-generic #64-Ubuntu SMP Thu Jan 5 11:43:13
UTC 2023 x86_64 x86_64 x86_64 GNU/Linux
21:38:01 up 156 days, 17:15, 454 users, load average: 3.82, 4.40, 4.19
Well I'll be. Someone is running a multi-user Unix system. That's
something I've always wanted to do or find someone doing.
There are a bunch of such systems. https://sdf.org/
has been doing it
for decades now, as has M-Net and formerly Grex (which got shut down
on April 15 of this year).
Not quite a
thousand users logged in simultaneously, but half that. If
one counts the number of processes associated with pseudoterminals,
it's more (I guess a lot of users are running tmux and/or screen).
The system is also surprisingly modest: 6 cores,
16GiB of RAM and
about 1TB of storage.
I can't yet tell if that's six logical CPUs or more. x86_64 cores
/could/ have hyper-threading et al. and more logical CPUs.
This was from the output of `top` and `htop`; if SMT is in use, Linux
generally reports those as separate LPs, so I'm going to assume that
if it only lists 6 CPUs, there are only 6 logical processors (either 6
cores with SMT disabled or 6 virtual CPUs; I don't know if it's a VPS
But still, six contemporary CPUs could be a lot of
16 GB of memory is nothing to sneeze at, especially for running commands
in a CLI environment. -- I'm assuming no daemons saying FEED ME RAM.
I think they run a fairly robust web presence including a Mastodon
server and some other stuff as well; I see postgresql running, a bunch
of other random stuff. Curiously (or not) no SMTP service. I'm told
they run a Gopher server, which seems like a waste of time to be, but
hey: to each their own.
I applied for membership. I'll be interested to see if I'm granted
logon permission. :-)
Thank you for sharing Dan.
- Dan C.