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vault711 | should i get kubuntu? | 00:30 |
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BluesKaj | Hiyas all | 11:02 |
jimtendo-X540S | Hi 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 |
BluesKaj | jimtendo-X540S, why an encrypted swap? | 11:32 |
jimtendo-X540S | BluesKaj: Kubuntu set it up by default when I installed Full Disk Encryption. | 11:56 |
jimtendo-X540S | BluesKah: 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-X540S | Readable in the swap partition*, sorry. | 11:57 |
BluesKaj | perhaps a swap file would use less cpu , and that can be encrypted too. | 11:59 |
jimtendo-X540S | BluesKaj: tried that unfortunately :( Still same issue. | 12:00 |
jimtendo-X540S | This 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 |
BluesKaj | jimtendo-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 encrypted | 12:02 |
BluesKaj | the swap file won't decrypt the data ...correct me if I'm wrong | 12:03 |
jimtendo-X540S | BluesKaj: 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 |
BluesKaj | well, guess you could always google :-) | 12:04 |
jimtendo-X540S | Either 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-X540S | I'll take a look now, thank you for your help! Appreciate it! | 12:05 |
BluesKaj | jimtendo-X540S, let us know what you find out | 12:05 |
jimtendo-X540S | BluesKaj: I don't think that's the case, unfortunately :( | 12:06 |
jimtendo-X540S | http://askubuntu.com/questions/313564/why-encrypt-the-swap-partition | 12:07 |
BluesKaj | jimtendo-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-X540S | I 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 |
Guest88415 | bigithepi | 12:18 |
BluesKaj | jimtendo-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 me | 12:19 |
pierre_ | hy | 15:26 |
pierre_ | bien ou bien | 15:28 |
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user|24769 | hi! | 23:28 |
user|24769 | how are you? | 23:29 |
gorgen | hi.. i m kubuntu user | 23:29 |
gorgen | from sweden | 23:30 |
user|24769 | today i traing iinstall lubuntu for the first time! I think it is very powerfull solution for old netbook | 23:30 |
user|24769 | hi gorgen! | 23:30 |
user|24769 | I'm from Italy! | 23:30 |
user|24769 | *training | 23:30 |
gorgen | i prefer xubuntu for old laptops, like the mac interface look | 23:31 |
gorgen | but lubuntu works fine to | 23:32 |
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