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6

Kevin mentions a number of great points, but it might help to start the analysis at a little higher level: what are the two machines and, since we're talking about Tomcat which runs in a JVM, do both have zAAPs or zIIPs (assuming zAAP on zIIP)? From the "d m=cpu" you should be able to get the machine model information which will at least let you know if you'...


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There is nowhere near enough information in the post to provide a definitive answer to what's causing this. How are you changing the amount of RAM? You've tagged this as CentOS 6 - but I don't think PHP7 is available from the standard build repo - where did it come from? Where did the previous version of PHP come from? A random guess would be that you've ...


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This is a superuser question not serverfault, but I had this myself on Fedora 24. Its was caused by ffmpeg-libs, VDPAU and my GPU/Kernel. For me I disabled VDPAU in VLC to 'fix' it. It appears as a ever increasing size of Shmem in /proc/meminfo and the affected process if you pmap it show hundreds of mappings for 'renderD128' and ever increasing. Its got ...


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Is Nginx overloading your CPU? Then you're being target of a sizeable DDoS attack. (Here's a nice explanation of the XML-RPC reflection attack with WordPress.) I don't think you'll get a better result than what you've already done just with Nginx. You can try using something like CloudFlare. Keep in mind, though, that you should change your IP to hide ...



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