Comments on: HTTP, Spectre, Meltdown https://www.dragonflydigest.com/2018/02/07/http-spectre-meltdown/ A running description of activity related to DragonFly BSD. Fri, 09 Feb 2018 20:09:37 +0000 hourly 1 https://wordpress.org/?v=7.0 By: Eric Olson https://www.dragonflydigest.com/2018/02/07/http-spectre-meltdown/comment-page-1/#comment-487173 Fri, 09 Feb 2018 20:09:37 +0000 https://www.dragonflydigest.com/?p=20840#comment-487173 It seems the mitigations for Spectre have greater impact than for Meltdown, which I find surprising since Meltdown is a more glaring hardware bug. As different hardware reportedly experiences greater or lesser effects from the mitigations, it would be nice to describe the testing hardware more clearly. All in all, I view this as more a strike against the security promises of hyperconvergence and cloud than anything else.

]]> By: Jon Trever https://www.dragonflydigest.com/2018/02/07/http-spectre-meltdown/comment-page-1/#comment-487170 Fri, 09 Feb 2018 02:35:19 +0000 https://www.dragonflydigest.com/?p=20840#comment-487170 Seph

Good to know!

Thanks :)

]]> By: Sepherosa Ziehau https://www.dragonflydigest.com/2018/02/07/http-spectre-meltdown/comment-page-1/#comment-487169 Fri, 09 Feb 2018 01:24:11 +0000 https://www.dragonflydigest.com/?p=20840#comment-487169 If your box is secured, e.g. your own web server and only you can login, I’d suggest to turn off both. However, you _do_ want to leave them to their default values for your desktops and laptops, etc.

]]> By: Christopher https://www.dragonflydigest.com/2018/02/07/http-spectre-meltdown/comment-page-1/#comment-487168 Thu, 08 Feb 2018 22:55:14 +0000 https://www.dragonflydigest.com/?p=20840#comment-487168 Is Spectre / Meltdown the reason why this site is slow on mobile devices?

From my iPhone, it’s painfully slow.

]]> By: mer https://www.dragonflydigest.com/2018/02/07/http-spectre-meltdown/comment-page-1/#comment-487166 Thu, 08 Feb 2018 15:10:59 +0000 https://www.dragonflydigest.com/?p=20840#comment-487166 Thanks Justin, I know that. I just seem to see Sephe’s work improving things reported here first. The results for this specific use case seem to mirror some of what Matt has reported in the past (at least in trend if not in specific number).

]]> By: Justin Sherrill https://www.dragonflydigest.com/2018/02/07/http-spectre-meltdown/comment-page-1/#comment-487165 Thu, 08 Feb 2018 13:07:40 +0000 https://www.dragonflydigest.com/?p=20840#comment-487165 And it’s not just DragonFly – it’s all x86, everywhere.

]]> By: mer https://www.dragonflydigest.com/2018/02/07/http-spectre-meltdown/comment-page-1/#comment-487164 Thu, 08 Feb 2018 08:50:23 +0000 https://www.dragonflydigest.com/?p=20840#comment-487164 Ouch. All the work Sepherosa has done to improve networking and it gets wiped out, if not completely, at least quite a bit.

]]> By: Justin Sherrill https://www.dragonflydigest.com/2018/02/07/http-spectre-meltdown/comment-page-1/#comment-487161 Thu, 08 Feb 2018 03:11:28 +0000 https://www.dragonflydigest.com/?p=20840#comment-487161 I and others have pointed this out multiple times – requests on random blog posts for “someone” to do a bunch of work isn’t going to do any good. I’ll delete these requests in the future, since you either aren’t reading or you don’t understand.

]]> By: Ajit https://www.dragonflydigest.com/2018/02/07/http-spectre-meltdown/comment-page-1/#comment-487159 Thu, 08 Feb 2018 00:09:44 +0000 https://www.dragonflydigest.com/?p=20840#comment-487159 Too bad that with all of these perf benchmarks occuring due to Spectre/Meltdown, no one is updating the painfully dated Dfly benchmarks

https://www.dragonflybsd.org/performance/

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