Mailinglist Archive: opensuse (982 mails)

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Re: [opensuse] disk cache
  • From: "Carlos E. R." <carlos.e.r@xxxxxxxxxxxx>
  • Date: Mon, 22 Sep 2014 13:22:25 +0200 (CEST)
  • Message-id: <alpine.LSU.2.11.1409221321440.6675@Telcontar.valinor>
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On Monday, 2014-09-22 at 10:34 +0100, Dylan wrote:
On 22/09/14 09:50, Andrei Borzenkov wrote:

Yes, but currently single application is able to fill in RAM with
unwritten data, so that the whole system (every other application) has
to wait while data is drained. And that blocks not only write-out, but
also reading of data. Resulting in very long delays and non-responsive
system.

IMO this is a result of bad design or a bug in the application causing the block - I use several 3d graphics/rendering applications which generate very large amounts of intermediate data (much more than can be written to disk at the speed it's generated) and none of them block other applications, even though they may be unresponsive themselves due to waiting for their own write-out to finish...

Maybe they use "sync" writes.

- -- Cheers,
Carlos E. R.
(from 13.1 x86_64 "Bottle" at Telcontar)
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