Running 3.5.4, my load average was about 1.5 - 2.0. I upgraded to 3.6.0 and now my load average is between 10.0 - 12.5. Nothing has changed other than the upgrade. Any clues where I should start to look for new features that may not be big board friendly?
Upgraded from 3.5.4 to 3.6.0 -- load jumped 5x
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Have you installed any hacks or plugins since the upgrade? Also try disabling some of the more intensive features including database read marking, users viewing this forum / thread, currently active users, searching, mail queue, queued view counter updates, plugins, etc. -
I installed vB3.6.0 over my original hacked version... when I noticed the load problem, I started disabling hacks hoping that one of them would be the cause of the problem.
After watching the load for a couple of hours, I've learned that it isn't a constant load... it seems that something has to be triggering it. Load will be around 2.0 - 2.5, but for no apparent reason that I can see, load will start to climb... into the mid 20s before it will start to head back down again.
I haven't found a reason yet to figure out what is causing it to start climbing.
I was watching the SQL queries and didn't see any query that was taking an abnormal long time, I think it is webserver based not DB based.Comment
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Ok... I think I've gotten it back to stabalize at average of 2-3 this morning. The funny thing is ... even with everything disabled last night, I was still getting rolling load spikes up to the mid-20s. This morning (10 hours after first load spike), I got up and logged on... and the average was back to semi-normal.
I've enabled the slow-query log to see if there is anything to be revealed there.Comment
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Check your mail server the next time this happens. I have found the same thing on my server being caused by massive influx of spam emails while my filters were trying to process and block these.Steve Machol, former vBulletin Customer Support Manager (and NOT retired!)
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I've been having the same problem with 3.6. I was under the impression that turning on all of those queued counter updates HELPED with issues of load, not made it worse?? Here's an example of what's happening to me. I'm on a dual core 3ghz box with 2 gigs of ram and a fast disk. Nothing else is running on this box other than vbulletin/apache and mysql. As you can see in the graphs, memory usage seems to spike as well, but that may be because vbulletin is hosed, and causing the apache procs to pile up. See the attached picture.Comment
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I have seen no jump in server load after upgrading to 3.6.0 myself. Quite the opposite in fact.
Please see this thread for help with optimizing your server:
Then post the requested info in a new thread in that forum.Steve Machol, former vBulletin Customer Support Manager (and NOT retired!)
Change CKEditor Colors to Match Style (for 4.1.4 and above)
Steve Machol Photography
Mankind is the only creature smart enough to know its own history, and dumb enough to ignore it.
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Average about 70-80 online at a time.Steve Machol, former vBulletin Customer Support Manager (and NOT retired!)
Change CKEditor Colors to Match Style (for 4.1.4 and above)
Steve Machol Photography
Mankind is the only creature smart enough to know its own history, and dumb enough to ignore it.
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I had the same thing, I upgraded 3.54 to 3.6 and a couple of hours later my host suspended my site. They were trying to figure out what was causing it and finally deleted the forum - everything got back to where it was. Not sure if I should try installing 3.6 again.Comment
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Strangely enough... 10 hours after the initial problem, the load has stabalized back to the mid 2.0 range. I'm thinking that for some reason my servers needed about 10 hours to become aclimated to the new software.
Even with all the hacks turned off and all vB features that were non-important, the rolling high load spikes were still happening. Then, mysteriously enough, the load spikes stopped and I've been turning back on features without any problems ever since.
To be on the safe side, I only turn on one or two features every couple of hours to make sure the rolling load spikes do not start again.
Strangely enough, I think I had the same problem when I went from vB3.0 to 3.5. Maybe it has something to do with the memory cache?Comment
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My server load went up high after the upgrade, too. It then stabilized, but went up again. I have about 100 users online at the same time (2500 unique per day). Never had this issue on 3.5.4. I put a crawl delay onto Yahoo's bots to get some room from that side. Helped a little bit. Nothing really changed on my server other than upgrading vB.
I am now closely monitoring and are looking into a server upgrade (just hate a bigger monthly expense).
ChristophComment
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Steve, without trying to belittle your site, 80 users is a far cry from my 2000 ranging to 4500 at times. I've already been through the server optimization threads and my rather high powered server has been running great for months. I do the upgrade and blam-o, massive load spikes. It's not the server config that's at fault here.Comment
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My forum is unusable after this upgrade. Memory will max out every 30 minutes or so and crash the server. And that is with the forum still CLOSED for the upgrade.
Is someone workng on this or have any suggestions? I have no hacks installed and my forum was running swimmingly before this update with 700-1000 members online at any given time.Comment
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