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Old 15th January 2018, 06:15 PM   #21
Mooly is offline Mooly  United Kingdom
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Yes, and Jason has been made aware of the problems.
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Old 15th January 2018, 06:19 PM   #22
scottjoplin is offline scottjoplin  Wales
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Old 15th January 2018, 09:47 PM   #23
Jason is offline Jason  Australia
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Thanks for reporting this (probably better to start a fresh thread though than revive one from 2011 to keep things clearly delineated ...

I believe I have found the cause of the problem. Working on it now.
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Old 15th January 2018, 09:58 PM   #24
scottjoplin is offline scottjoplin  Wales
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Haha, and there was me thinking I was doing the right thing by not starting a new one. Thanks for looking into it, it was starting to become a drag
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Old 15th January 2018, 10:01 PM   #25
Jason is offline Jason  Australia
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Sometimes yes, sometimes no In general I'd say it's a good idea to start a new thread but... there is always the exception isn't there

We'll use this one for now. I will post an update ASAP.
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Old 15th January 2018, 10:26 PM   #26
MAAC0 is offline MAAC0  Portugal
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Core i7Q 16GB Ram Windows 10x64 I611 10:30PM running fine here in Portugal on 100Mb Fibre. But I agree Internet is slower nowadays. I presume it's the processor bug thingy.
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Old 16th January 2018, 01:55 AM   #27
PRR is offline PRR  United States
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I've had hours of snappy result and short periods of loooong delays.

So there is some occasional load-hog. Being way up the wire, I can always blame my cable operator; but it does seem worse on DIYA.

Like MAACO I wondered about the CPU fixes.
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Old 16th January 2018, 02:13 AM   #28
globalplayer is offline globalplayer  Germany
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Originally Posted by PRR View Post
Like MAACO I wondered about the CPU fixes.
CPU "fixes".
They will slide in another set of backdoors for sure.
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Old 17th January 2018, 12:32 AM   #29
Dude111 is offline Dude111
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Everything seems nice and fast here....

Thank you Jason for keeping things running smoothly
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Old 17th January 2018, 06:05 AM   #30
Jason is offline Jason  Australia
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A large number of fixes have been implemented to alleviate the problems we've been encountering since the KPTI patch was installed on our server. Work is ongoing.

Multiple posts were occurring due to AJAX in the quick reply / quick edit box. This is normally fine but due to our server problems it was causing double posts, which then caused a traffic jam scenario and flow-on effects. AJAX has been removed which has stopped this problem, the only downside is when you submit a quick reply it will reload the page instead of dynamically adding the post to the page without a page reload.

Secondly, a particularly problematic query has been eliminated by pruning some superfluous indexes in the post table, rebuilding the indexes and analyzing them to help the query planner do its job. This particular query has droppped from 30 seconds to 0.1 seconds, and could have been one of many potential factors causing the "traffic jam" style problems we've been encountering.

We've invested in more server monitoring technology and are still in discussions with our host about how the KPTI patch could have affected us so badly, but it appears our particular workload is hit extremely badly by the required patch to fix Intel's bug. You can read a very fascinating and almost-understandable paper on the exploit here: https://meltdownattack.com/meltdown.pdf

Work is ongoing to ensure that using the forum remains a pleasure. As soon as we get things under control we will refocus on our move to a new and modern forum platform (XenForo2).

Last edited by Jason; 17th January 2018 at 06:07 AM.
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