On 4/20/2011 11:13 AM, Dan Foster wrote: > Hot Diggety! Michael C Tiernan was rumored to have written: >> ----- Original Message ----- >>> From: "Adam Tauno Williams"<[email protected]> >>> Most recommendations I see [...] >> The thing I keep seeing is stuff that discusses about how much the >> system "*needs*". There's lots of sides about how you can live without >> much or you *should*[1] have some or you *should*[1] have lots but I'm >> wondering if anyone found any discussions about what happens if you >> have *too* much swap? >> >> Ignoring the issue of wasting disk space, are there any negatives to >> having lots of swap? > That's actually easy to answer: the system slows down BIG time if it's > heavily utilized, to the point where you're forced to power cycle it > uncleanly if you want to regain control in less than 24 hours. :) > > So swap sizing is bit of an art; need to know what the app needs (and > how it works behind the scenes) and allocate accordingly, but not set up > such so huge of an 'overdraft' account that you find yourself in an > impossible-to-sanely-fulfill-quickly situation. > As Dan cleverly points out, there are two ways to interpret your question. I interpreted it as if you have more swap than you really need and you're not using it. In that case, all you've done is waste disk space. There's no performance penalty.
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