-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Friday, 2017-12-22 at 15:21 +0100, Rainer Fiebig wrote:
Carlos E. R. wrote:
I noticed this:
+++------- Manuel Krause 2017-07-03 17:41:10 UTC
I've forgotton to add another comparison: In normal -- unpatched -- mainline 4.11.8 -- KDE & Firefox can remain unresponsive for more than 7mins in corner cases. -------++-
I often noticed the system unresponsive on return from hibernation, specially big apps like firefox. My guess was fragmentation of swap; indeed, I installed an SSD and moved my swap to it: problem solved.
The image that's written to disk can be huge - depending on memory-load when hibernating. Re-loading that contents into memory can take a while and during that time system and apps may be somewhat unresponsive.
An SSD is of course much faster than a HD - this is the reason why your system returns faster to normal responsiveness in high-load-cases. Not fragmentation.
The hard disk handling the swap was working at about 2 MB/sec for minutes, when it is capable of more than 150 (measured). The SSD is capable of 250 MB/S (just measured it, old motherboard). The speed difference is not that big, but the seek time difference is huge. Hours after restoring from hibernation, going from one worskpace displaying Firefox to another displaying LibreOffice could take a minute or two sometimes, just swapping. Now with the SSD (which is not that fast) it just takes seconds. So yes, IMO there is bad swap fragmentation in Leap. There wasn't in 13.1.
But I doubt that it's a good idea to use an SSD for swap. AFAIK it's writing that wears SSDs out.
So be it... - -- Cheers, Carlos E. R. (from openSUSE 42.2 x86_64 "Malachite" at Telcontar) -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iEYEARECAAYFAlo9HvAACgkQtTMYHG2NR9UJ5wCeI+Mi3/KE6qbZja2oA0daxMtl e78An0cqss8EiHZQFVzXYR6BsAp2n9rr =mHIn -----END PGP SIGNATURE----- -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org