Otan o server kanei thrashing

Harris Kosmidhs hkosmidi at laboratorium.gr
Tue Mar 9 12:58:10 EET 2010


On 9/3/2010 12:25 μμ, Thanasis wrote:
> on 03/09/2010 11:57 AM Harris Kosmidhs wrote the following:
>> On 8/3/2010 2:46 μμ, Christos Ricudis wrote:
>>> apo th stigmh pou arxiseis na exeis thrashing, ksexna to. To kolpo
>>> einai na to kaneis monitor PRIN arxisei to thrashing, wste na deis
>>> ti to prokalei. mia kalh lysh einai na apenergopoihseis teleiws to
>>> swap. (egw genika de bazw pote swap se server machines).
>>
>> γιατί;;
>>
> Δεν εξήγησε το γιατί πιο κάτω;

λέει
apo th stigmh pou arxiseis na exeis thrashing, ksexna to. To kolpo einai
na to kaneis monitor PRIN arxisei to thrashing, wste na deis ti to
prokalei. mia kalh lysh einai na apenergopoihseis teleiws to swap. (egw
genika de bazw pote swap se server machines). Ean to systhma arxisei na
mhn exei mnhmh, o OOM killer 8a arxisei na skotwnei opoio process 8ewrei
ypey8yno gia thnkatastrofh. polles fores einai to la8os process alla
toulaxiston einai mia kalh arx, kai mporeis na deis apo ta kernel logs
ti exei skotwsei to OOM.

Ναι ίσως έχεις δίκιο. Απλά θεώρησα ότι το "Ean to systhma arxisei na mhn
exei mnhmh," μπορεί να συμβει με ή χωρίς swap (αν υποθέσουμε ότι και το
swap γεμίσει).

Αλλά γιατί να φτάσεις στο σημείο να κάνει ο OOM kill processes αντι να
βάλεις κάποια GB swap;
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