/srv/irclogs.ubuntu.com/2017/03/11/#kubuntu.txt

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vault711should i get kubuntu?00:30
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BluesKajHiyas all11:02
jimtendo-X540SHi guys, has anyone else encountered a problem that, when using an encrypted swap, kswapd consumes a very high amount of CPU usage (in my case, 35%+)?11:29
BluesKajjimtendo-X540S, why an encrypted swap?11:32
jimtendo-X540SBluesKaj: Kubuntu set it up by default when I installed Full Disk Encryption.11:56
jimtendo-X540SBluesKah: As I understand, it's actually a good idea. Saves potentially sensitive information (passwords and keys) from being in the Swap partition in case the PC is ever lost.11:57
jimtendo-X540SReadable in the swap partition*, sorry.11:57
BluesKajperhaps a swap file would use less cpu , and that can be encrypted too.11:59
jimtendo-X540SBluesKaj: tried that unfortunately :( Still same issue.12:00
jimtendo-X540SThis computer becomes unusable as soon as the swap becomes active. It's only 4gb RAM with a 4gb Swap. Swappiness is only set to kick in when upto 90% ram is used, from memory.12:00
BluesKajjimtendo-X540S, my thinking is if the whole disk is encypted then tha data i in the swap file must be in encrypted form as well so if you use a n unencrypted swap then the data there is still encrypted12:02
BluesKajthe swap file won't decrypt the data ...correct me if I'm wrong12:03
jimtendo-X540SBluesKaj: Umm... that's an interesting thought. Not sure if it's correct or not, but it might be? Can anyone else confirm this?12:04
BluesKajwell, guess you could always google :-)12:04
jimtendo-X540SEither way, to get around this issue, I might just use a swap unencrypted for now... I don't necessarily have anything that is that sensitive, just prefer to follow best practises if I can.12:05
jimtendo-X540SI'll take a look now, thank you for your help! Appreciate it!12:05
BluesKajjimtendo-X540S, let us know what you find out12:05
jimtendo-X540SBluesKaj: I don't think that's the case, unfortunately :(12:06
jimtendo-X540Shttp://askubuntu.com/questions/313564/why-encrypt-the-swap-partition12:07
BluesKajjimtendo-X540S, oddly enough their expalanation makes no sense to me , how does the data become decrypted in swap ?12:09
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jimtendo-X540SI think going in it encryptes and going out it decrypts... so I can imagine there should be a bit of a performance hit there.. but I feel confident that the performance hit I'm getting is unusual... it's insanely slow (I usually just reboot as soon as my swap is activated - it's quicker than waiting for anything to respond)12:11
Guest88415bigithepi12:18
BluesKajjimtendo-X540S, the encryptioon key could be stored in swap, which to me is like winning the lottery...what are the odds , but that's the reason...not a very likely scenario, but that's what the experts over at ##linux just expalined to me12:19
pierre_hy15:26
pierre_bien ou bien15:28
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user|24769hi!23:28
user|24769how are you?23:29
gorgenhi.. i m  kubuntu user23:29
gorgenfrom sweden23:30
user|24769today i traing iinstall lubuntu for the first time! I think it is very powerfull solution for old netbook23:30
user|24769hi gorgen!23:30
user|24769I'm from Italy!23:30
user|24769*training23:30
gorgeni prefer xubuntu for old laptops,  like the mac interface look23:31
gorgenbut lubuntu works fine to23:32

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