Synthetic benchmark scores are marketing. What matters for a production VPS is how the provider behaves under the contention patterns you will actually create: sustained CPU load, small random I/O,…

A VPS that runs smoothly for weeks and then suddenly slows down is usually suffering from a problem that was visible in the metrics long before anyone noticed. Memory leaks,…

MySQL and MariaDB are the most common cause of an OOM kill on a 1–2 GB VPS, and the usual fix — “lower innodb_buffer_pool_size” — often makes things worse because…

While network sysctl tuning gets most of the attention in VPS performance guides, the vm.* kernel parameters have an equally large impact on day-to-day stability. These settings control how the…

TCP Fast Open (TFO) is one of the simplest latency optimizations you can enable on a VPS. A single kernel parameter and an Nginx directive can eliminate one full round…

PostgreSQL creates one OS process per connection, and each idle connection can consume 5–10 MB of RAM. On a small VPS with 2–4 GB of memory, an application that opens…

Every PHP request compiles the requested script from source unless the compiled bytecode is already cached in memory. A typical WordPress installation with a dozen plugins contains 500–1000 PHP files,…

If your VPS transfers large files slowly, or throughput collapses whenever the network drops a packet, the default congestion control algorithm is a likely culprit. Most distributions still ship CUBIC,…

vm.swappiness is the single kernel knob most VPS guides tell you to set to 10 and then forget. That advice is not wrong, but it is cargo-cult: it explains the…

Deploying a new version of your application should not mean telling users “be right back”. On a single VPS you cannot spin up a second datacenter, but you can still…