A lonely Free Software {Us,Hack}er

Edits in: Emacs, and Vim | Lives: Stoically | Eats: Vegan | Runs: FreeBSD, and NixOS | Behaves: INTP-T

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Joined 4 years ago
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Cake day: March 24th, 2021

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  • With user joined to ~30 rooms with ~200 users (average), and none of them is of the order of Matrix HQ, following is the ps aux output (sixth column is RSS, physical memory in use in KiBs) on a 4G RAM VPS (2 cores), which also hosts XMPP, gitea, fossil-scm, et. al. services. I used to run it all by itself on 2G RAM VPS, but consolidated ~2 months ago:

    postgres 29897   0.0  3.7  191284 153736  -  Ss    2Jul21     28:15.26 postgres: synapse synapse 127.0.0.1(5828)  (postgres)
    postgres 37308   0.0  3.7  191284 153264  -  Ss    2Jul21     27:54.09 postgres: synapse synapse 127.0.0.1(16807)  (postgres)
    synapse  45418   0.0  9.0 1246748 375220  -  Ss    2Jul21   2264:01.80 /usr/local/bin/python3.8 -m synapse.app.homeserver --daemonize -c /usr/local/etc/matrix-synapse/homeserver.yaml
    postgres 45433   0.0  3.7  191284 153096  -  Ss    2Jul21     28:21.45 postgres: synapse synapse 127.0.0.1(12404)  (postgres)
    postgres 46529   0.0  3.7  191284 153644  -  Ss    2Jul21     28:06.31 postgres: synapse synapse 127.0.0.1(31560)  (postgres)
    postgres 47450   0.0  3.7  191284 153972  -  Ss    2Jul21     28:16.65 postgres: synapse synapse 127.0.0.1(30342)  (postgres)
    postgres 47929   0.0  3.7  191284 152948  -  Ss    2Jul21     28:20.01 postgres: synapse synapse 127.0.0.1(8337)  (postgres)
    postgres 48024   0.0  3.7  196404 153296  -  Ss    2Jul21     28:22.18 postgres: synapse synapse 127.0.0.1(43996)  (postgres)
    postgres 54977   0.0  3.7  191284 153656  -  Ss    2Jul21     28:16.74 postgres: synapse synapse 127.0.0.1(8192)  (postgres)
    postgres 55034   0.0  3.7  191284 153468  -  Ss    2Jul21     28:20.01 postgres: synapse synapse 127.0.0.1(48984)  (postgres)
    postgres 74852   0.0  3.7  191284 153328  -  Ss    2Jul21     28:10.76 postgres: synapse synapse 127.0.0.1(44007)  (postgres)
    

    Disk Usage (media) is 1.6G, and load average is ~0.33

    It can be tuned further, but didn’t spend time on it so far. Although 2 years ago, I could not run it on 2G RAM VPS. Federation traffic kept DoSing the server, once you join any room. Lately, situation has improved a lot.



  • Anyway. hopefully the dendrite server can solve this problem, hosting that hog of server is costly.

    Lately Synapse has been pretty light on resources, and performant, and being actively developed reference implementation has its perks. Hopefully Dendrite, Conduit, et. al. will catch up, but Matrix in general is not as lightweight as XMPP, due to former’s focus on being able to evade censorship