If you are running Ganglia in a non multicast environment, it may be the case where a gmond process occupies 100% of the system’s CPU. In such cases it is helpful to check whether the node should be deaf or not (when it is a node that should not receive any messages from others). So try to set in your gmond.conf:

deaf = yes

and see what happens. This has happened to me on CentOS 6.x systems.

Regression to Mean

2015/05/16

Yesterday, Spanoulis’s performance was subpar, save it for two critical shots, a three pointer and a two pointer right after. While for the whole game his performance was down the rest of the team kept up. And as Stojakovic taught us Olympiacos fans, in such cases all previous missed shots do not matter. Why?

Regression to Mean.

As long as the team kept up without his help, I expected his critical shots to go in. A player’s performance does not vary from his average behavior for long. Coaches know this and that is why they allow the last shot to their star shooter even when on a very bad day. And that is why it does not matter if they miss it. Because their performance will return to their expected level, so the sooner the better. And sooner means take the damn shot.

This note was prompted by the fact that I heard today two other dads discussing those two shots that they did not expect to go in. I did not intervene in the discussion.

Δεν μπορούσα παρά να θυμηθώ την παραπάνω φράση όταν είδα τον Υπουργό Πολιτισμού να απαντά σε χρήστη στο twitter:

.@kyr_ath Wovon man nicht sprechen kann, darüber muss man schweigen (Ludwig Josef Johann Wittgenstein)

Όποιος ενδιαφέρεται για την φράση, μπορεί να ξεκινήσει από εδώ. Όποιος ενδιαφέρεται για το βιβλίο μπορεί να ξεκινήσει από εδώ. Υποψιάζομαι πως η σχέση αναφορών στις δύο διασημότερες φράσεις του βιβλίου προς τις αναγνώσεις του είναι χαώδης.

Thank you guys!

2015/05/15

A lesson in not qutiting

A lesson in not qutiting

This is one of my favorite productivity stories, although most people use it when confronted with educational or ADD/ADHD diagnoses:

Telling us a story about a famous ballerina, Robinson tells us that the young woman, these days, would likely be diagnosed as having ADHD, as she didn’t concentrate in her classes. Taken to see an educational specialist, the psychologist was smart enough to leave the room, turn on the radio, and let the young girl dance. He told her parents, “Jilien isn’t sick – she’s a dancer”. She went on to a dance school, joined the Royal Ballet and has choreographed most of Andrew Lloyd Weber’s musicals. Nowadays, we would give her medication and tell her to calm down.

So sometimes, when you see someone being unproductive, maybe he’s just not a dancer for the tasks at hand. If you’re a manager you may need to figure out how that person dances.

Note to self: If you ever mess up your terminal defaults in Yosemite execute

defaults delete com.apple.Terminal

Yesterday it was World Autism Awareness Day. So let me copy here the only Slashdot comment I remember (and one of the few that I’ve read anyway). I read it before autism knocked my door:

As the mother of an autistic (PDD) child–thank you for saying all that.

I’m so fucking sick and tired of these geeks who think autism is some sort of neato cool thing to have which makes your life a magical fairyland of math and science genius while explaining away their aversion to dating and soap. That attitude alone tells me they have no fucking clue what they are talking about.

Autism is not a benefit and it’s not fun and games. It’s a fucking nightmare! I can’t even begin to imagine what my son goes through when he «short circuits» on sensory overload. And he’s old enough now to realize something is going wrong, but he can’t do anything to stop it. How come none of the «autism wannabes» out there ever talk about that aspect? Maybe because they’re not actually autistic? Trust me, if I could I’d take my son’s autism away from him and give it to one of those «autism is so kewl!» geeks so their dream of being autistic can come true.

It deserves better visibility and I can now attest to its accuracy.

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