Disk cache on virtual machine (KVM/Proxmox)
Some theoretical stuff about different caching for virtual drives: KVM (and by extension Proxmox, which uses KVM) offers several disk cache modes that control how […]
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Proxmox – CPU stuck warning
watchdog: BUG: soft lockup – CPU#7 stuck for 22s Annoying bug, makes processes and VMs stuck. Spent several days trying to figure it out. Got […]
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Benchmark i7-7700, Ryzen5 3600, Ryzen7 3700X, i5-13500, Xeon E-2276G, part 2
Greetings Wizards! This is second part of the big benchmark of 5 servers priced below 50eur/month. You can find first part here. Second part is […]
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How many CPU cores do I need for my VPS?
“How can I improve speed of my WordPress site and will adding more CPU cores help?” question I am being frequently asked Quick answer is […]
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Does SQL Query Cache matters on shared hosting?
Query cache, once a popular feature of MySQL database engine was removed from it many years ago. Developers from MariaDB kept it and that was […]
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Hands on ARM64 80-core server
Hardware and CPU development does not ever stop. Some CPUs are getting faster, some are getting more energy efficient, some are getting new features and […]
Continue reading »Only allow to view images from a folder with simple .htaccess file
Once in a while my beloved hackers upload their shitty files into image folder (basically they use some plugin for image upload). In most cases […]
Continue reading »How to flush RAM on Linux / Centos
I personally suggest using first option, other are more and more “hardcore”. Also I would not suggest doing this under high CPU load or high […]
Continue reading »Optimizing MySQL, Intermediate results
In the past few weeks we’ve been looking into different MySQL configuration options and were running many simple tests. Even though all tests were different […]
Continue reading »Optimizing MySQL, part 3, mysql cache
In this part we are targeting MySQL cache. On most of our shared-hosting servers more than 50% of all queries are served by MySQL cache. […]
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