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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. Martin Sundhaug‏ @sundhaug92 8 May 2018
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      Replying to @marcan42

      What sort of machines are you running that on?

      1 reply 0 retweets 0 likes
    2. Hector Martin‏ @marcan42 8 May 2018
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      Replying to @sundhaug92

      Ancient ones. 2 hosts on the left have 2x Xeon E5420 (Harpertown) each (8c8t total per host), right side has 1x E5520 (Nehalem-EP) (4c8c total). We rewrote the entire application and optimized the critical path to make it work out. New hardware is in the pipeline.

      2 replies 0 retweets 1 like
    3. Martin Sundhaug‏ @sundhaug92 8 May 2018
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      Replying to @marcan42

      Nice. How much RAM, storage and what kind of NICs?

      2 replies 0 retweets 0 likes
    4. Martin Sundhaug‏ @sundhaug92 8 May 2018
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      Replying to @sundhaug92 @marcan42

      Sorry in re RAM, didn't get the hires vid from twitter before now. 4 gigs in a server? Ouch

      1 reply 0 retweets 0 likes
    5. Hector Martin‏ @marcan42 8 May 2018
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      Replying to @sundhaug92

      I know, right? They used to be 6+6 though I moved 2G from one to the other in order to maaybe fit in a VM or two, but never got around to it. Newer servers will have way more. The two smaller servers run an Elasticsearch cluster for debug/app logs and... yeah, that chews up RAM.

      1 reply 0 retweets 1 like
    6. Martin Sundhaug‏ @sundhaug92 8 May 2018
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      Replying to @marcan42

      ES on 4 or even 8 gigs? Damn, I almost feel sorry for it

      1 reply 0 retweets 0 likes
    7. Hector Martin‏ @marcan42 8 May 2018
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      Replying to @sundhaug92

      Last night we closed all the indices except the last two months and dropped the Java heap to 800MB or so. Otherwise I'm sure we'd have had a really bad time.

      1 reply 0 retweets 1 like
    8. Martin Sundhaug‏ @sundhaug92 8 May 2018
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      Replying to @marcan42

      Nice. Running ELK or something for logs and such or?

      1 reply 0 retweets 0 likes
    9. Hector Martin‏ @marcan42 8 May 2018
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      Replying to @sundhaug92

      Hector Martin Retweeted Hector Martin

      EF(ilebeat)K, but yeah. We dump rich JSON logs from the app into a file and tail that. Invaluable debugging aid (and also great for dealing with annoying users). See the third image here:https://twitter.com/marcan42/status/993753850904330240 …

      Hector Martin added,

      Hector Martin @marcan42
      All systems ready #EE26 #noF5day pic.twitter.com/3BzbnUUy1E
      1 reply 0 retweets 1 like
    10. Martin Sundhaug‏ @sundhaug92 8 May 2018
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      Replying to @marcan42

      Nice. Use that for a dashboard too or?

      1 reply 0 retweets 0 likes
      Hector Martin‏ @marcan42 8 May 2018
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      Replying to @sundhaug92

      The main dashboards are Prometheus + Grafana (though we have a couple useful event metric dashboards in Kibana too)

      2:49 AM - 8 May 2018
      • 2 Likes
      • Diego (usa mascarilla y 2m) Martin Sundhaug
      1 reply 0 retweets 2 likes
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        1. Martin Sundhaug‏ @sundhaug92 8 May 2018
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          Replying to @marcan42

          Hosted on the same three servers? Run syslog through it too?

          1 reply 0 retweets 0 likes
        2. Hector Martin‏ @marcan42 8 May 2018
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          Replying to @sundhaug92

          Prometheus/Grafana is on the 8GB server, with exporters on every host. Syslog isn't going anywhere but local logs yet, but will once we get new hardware and revamp the entire setup. The whole thing is a little haphazard right now, but will be a lot cleaner on the new hardware.

          1 reply 0 retweets 1 like
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