VPS Yo-Yo Performance

[Qube]

I've been a happy eukhost member since December when I bought a VPS Hosting (Linux). Apart from the odd issue here and there (which support sorted) all was going well and I finally thought I'd found a home for my hosting needs.

That was until the last few weeks when at random times my VPS Hosting grinds to a holt, CPU usage goes ballistic and MySQL gives up. I've lost count of the number of times I watched my VPS Hosting slow down then speed up again.

Yesterday it was working fine until the dreaded slow down started to happen, forum pages were getting slower and slower and then stopped altogether. So I get on to Live chat for a conversation with Alan.

After looking into it he blamed my vBulletin forum all-model-railroading.co.uk saying that it overloaded the MySQL database.

However I strongly disagree with this and do feel he is mistaken. Why do I think that?

Well, for a start at the times the VPS Hosting slows down I've checked for users online, approx I have 5 members and around 10-20 guests.

Point 1.. Can your VPS Hosting not handle a vBulletin with 5 active members and 10-20 guests?

Now, when this database overload happened the amount of active users was even less than the average, yet for some reason the whole thing did overload.

Point 2.. Why does your VPS Hosting overload with so little users, yet other times when it's more busy it works fine?

As of now, my forum has 6 active members and 32 guests. Yet it's working speedy, as it should be.

Point 3.. If it's more busier than yesterday when it went down, why is it not struggling to cope with the amount it has on right now?

Point 4.. Why at 7am this morning when I had over 50 guests was the CPU load 0.03 yet yesterday when far fewer guests and members were on caused the VPS Hosting to overload?

These random and continuing VPS Hosting speed issue's are really beginning to annoy the hell out of me and I'm 100% sure it's not my forum.

So now I've got a VPS Hosting which can't handle a vBulletin forum with a few users. To me, that's worse than a godaddy shared account. Granted I have other sites on my VPS Hosting, but these generate even less traffic and Alan specifically stated it was my forums database.

Even stranger, it's been mostly fine up until the last few weeks. But off of a sudden it's not and I'm told I need to upgrade to a semi-dedicated. Really? a semi-dedicated to handle a light usage vBulletin forum?

last check - 3 members and 31 guests, more than yesterday, still fast. Yesterday, less users, dead VPS Hosting. Hmmm, something is not right at all.

Does this sound correct to anyone else? or am I just expecting too much from a VPS Hosting with such little active users?

[Site]

Hi,
As you say its currently running perfect now,

However unsure how a forum could slow it down with so little people currently online though?


Maybe another VPS Hosting is slowing the node down?
Also how many VPS Hosting to the 1 node?

[Qube]

However unsure how a forum could slow it down with so little people currently online though?

That's what I was trying to get Alan to understand yesterday. HOW can even less online / guests overload it? - It's never that busy! If I had 30 online and 300 guests I could understand but come on...

I was told to check my scripts / database / SQL Server commands etc. So I said it's all off the shelf vBulletin AND I've changed / added nothing AND it's been working fine pretty much since December. The reply was a simple "OK", hardly a help.

I'm not blaming Alan, he can only go on what info he sees in front of him, but I strongly disagree with the blame lying at my low activity forum overloading a VPS Hosting.

[Site]

True as said in the above post

Originally Posted by Site

Maybe another VPS Hosting is slowing the node down?

You would have to get someone to clarify this though



As an added note:

Originally Posted by Site

Also how many VPS Hosting to the 1 node?

[jc8654]

I've been having issues with my VPS Hosting as well in the last few days. I really think it would be useful to get an answer from support or someone from eUK about this...

[Site]

Maybe your both on the same node?

[freeneasy]

If you read a few posts on this forum I have mad, We too had problems with server load at times.

Same as you this was happening with just say 10 members and 30+ guests on ( vbulletin too)

We found that one problem was when we mass emailed, Vbulletin was trying to do too much for the server to handle.

Still after this was sorted we had a couple of issues.

These were sorted on Live support when it was found that an update cron was running at a certain time every evening and crippling the VPS Hosting.

I dont know if these pointers will help but it certainly sorted our problems.



( see ........another post without moaning )

[Qube]

We found that one problem was when we mass emailed

No ability to mass mail on our forum

an update cron was running at a certain time every evening and crippling the VPS Hosting.

My issue it at random times, mainly afternoon and evening. Funny thing is, about 6am / 7am it's mostly turbo fast no matter how many members are online.

*edit* Yesterday the problem was just before 12:00pm

[vzAddict]

Hello,

CPU or Memory Usage on a VPS Hosting doesn't depend upon the Users you have online on the website hosting. There are many factors that affect the memory and CPU usage of a VPS Hosting, like Exim process, httpd connections, Cpanel / perl updates etc.

MySQL will consume High CPU and memory when there will be lots of connections, number of query execution at a time or data-modifications. So, it is always suggested to optimize the databases and scripts so that they will not create huge load on the VPS Hosting.

[Qube]

vzAddict, I'm aware of that, however Alan specifically stated that it was caused by the forums database overloading and the only thing that talks to that is vBulletin.

Even if the database was not optimized it should not cause an overload with just a handful of users. Plus it's been pretty good all day today, so scratch that theory.

Oh for a solution to this. A few weeks of unknowns if getting to me

[deutschland]

Hello,

I have a VPS Hosting from EUKHost.Com
This company have Really 24/7/365 Good Support and Very Professional Technical Managements.
I am very satisfied and hope for use VPS Hosting from this company.
Network Connections are very nice Speed .
Support Team are friendly and Professional.
Response to tickets is very very Fast .

Thanks,

[John]

Hello,

We have given your VPS Hosting a thorough inspection and we can't find any obvious problems at the moment. Currently http://www.all-model-railroading.co.uk/forum/ has 0 members online and just 10 guests. Your currently memory utilization is 144 MB out of a 256 MB guarantee. It wouldn't be too difficult to imagine your VPS Hosting going over this 256 MB guarantee when your forum is busier. I also note you are hosting other domains on this VPS Hosting and their activity will also go towards the total memory utilization.

After your VPS Hosting has gone over the 256 MB limit, you are using Burstable RAM. Burstable RAM is shared amongst every other VPS Hosting user on the node. Burstable RAM, as the name suggests, is there for occasional peaks in resource usage. The only problem with this scenario is if you are trying to receive Burstable RAM at the same time as other users and there isn't enough available to go around. Processes will then be killed off and it could indeed slow down your VPS Hosting or even completely crash it.

If you continue to experience problems, I would recommend an upgrade to the next plan as this would give you more Guaranteed RAM.

[Site]

Other sites within the 1 VPS Hosting sounds fair to overload


What is the usual memory utilization for an average VPS Hosting?

[John]

Originally Posted by Site

Other sites within the 1 VPS Hosting sounds fair to overload


What is the usual memory utilization for an average VPS Hosting?

Hi,

I'm not quite sure how to answer that

Our most popular VPS Hosting product is the L-VPS Hosting-01. The fact that it's the cheapest should give you some indication of why it's the most popular . Most of these users stay within their 256 MB guaranteed limit.

However, it's very important not to rely on Burstable RAM too much. If you do that, you will run into problems.

[Site]

Would 40 sites be capable on the starter VPS Hosting?

15 which have a MySQL Server db ?


Not many heavy users

[John]

Originally Posted by Site

Would 40 sites be capable on the starter VPS Hosting?

15 which have a MySQL Server db ?


Not many heavy users

That's a bit like asking "How long is a piece of string?". I can make no promises. I can tell you some clients are successfully hosting hundreds of domains on that starter VPS Hosting and some struggle to host one..

We do offer a 30 day money back guarantee and this is perfect if you are not sure of your needs. Please note, the control panel charge is not included in the 30 day money back guarantee.

[Site]

Hi,
Many thanks for your reply...
I appreciate its not the easiest to answer

[Qube]

Hi John,

It wouldn't be too difficult to imagine your VPS Hosting going over this 256 MB guarantee when your forum is busier.

I agree with that statement. But what still puzzles me is what has caused this issue a number of times with the forum not being busy at all?

The VPS Hosting has been super speedy since this last issue came up no matter how many members / guests are online, so I have no idea as to what is causing it. It makes no sense at all to overload with few users, yet work fine with many.

I have since changed vBulletin so it stops guests from viewing when CPU usage hits 1.85 and stops everyone from viewing when CPU usage hits 3. Even the lower limit has not been hit since the last overload happened.

It's a mystery and one I hope doesn't keep on repeating itself.

[John]

Hi,

If it happens again please do a cat /proc/user_beancounters

This will tell us if it is memory related.