Why my little brother my website is very card, system related issues or hardware related issues

Why does my website have a card, a system problem or a hardware problem?
I use VPS server, Memory 1G ECC, dual core cpu,70g HDD, 3M exclusive bandwidth, four-wire, WIN2003 system
Because the site is still in beta, so at the same time the number of online not exceeding 10 people
Now the site with a card, and a few minutes, and sometimes stuck, you need to reopen the web landing, I asked the server, they said is the hardware configuration is too low, the card when the CPU occupancy rate suddenly high, need to upgrade the server, and I suspect that the system is the problem, is this the case is a system problem or a hardware problem?
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To see what the process accounts for.
It's enough to look at the situation server.
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This configuration on Linux look ... But it's not supposed to be the case with a few people.
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The VPS may be over-sold.
If it is OpenVZ can be sold over
Xen KVM No
See what kind of virtual technology it belongs to.
And look at the time you're doing on the VPS.
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Would you please look at this ...? Http://www.bo56.com/%E5%96%84%E7%94%A8php-fpm%E7%9A%84%E6%85%A2%E6%89%A7%E8%A1%8C%E6%97%A5%E5%BF%97slow-log%EF %bc%8c%e5%88%86%e6%9e%90php%e6%80%a7%e8%83%bd%e9%97%ae%e9%a2%98/
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If there is a query, you can look at the current page of SQL, which may be the cause of bandwidth.
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Check with your browser to see which element is stuck and then hit the corresponding element in the background to see where the performance bottleneck is.

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