Clock drift is one of the few server problems that produces symptoms nowhere near its cause. A VM whose clock has drifted a few seconds can reject TLS connections, invalidate…
Read MoreMySQL Memory Budget on a 1 GB VPS: Measuring Every Buffer Instead of Guessing
A measured breakdown of MySQL memory on a 1 GB VPS: how to read the buffer pool allocation, compute the per-connection worst case, and budget RAM without triggering swap.
Read MoreLoad Average vs CPU Saturation on a VPS: Reading Both Without Getting Fooled
Why a load average of 8 can be harmless on an 8-core VPS and a load of 1.5 can be catastrophic on a 2-core one — and the metrics that tell you which situation you are in.
Read MoreCutting MySQL Memory on a Small VPS: A Verified, Repeatable Procedure
A verified procedure for reducing MySQL memory on a 1-2 GB VPS: baseline the RSS, right-size the buffer pool, trim per-connection buffers, and confirm the reclaimed memory.
Read MoreNginx vs Apache on a Low-Traffic VPS: Measured Memory, Config and Maintenance Costs
An object cache (Redis or APCu) so repeated queries are served from memory. OPcache with a generous opcache.memory_consumption, so PHP is not recompiled per request. Only then, the choice of…
Read MoreDiagnosing Disk I/O Latency Spikes on a VPS Before They Wreck TTFB
A step-by-step method for isolating disk I/O latency spikes on a VPS: measure the right metrics, separate write and read pressure, and fix the actual bottleneck.
Read MoreTuning PHP-FPM Process Pools by Workload Type, Not by Copy-Paste
How to size PHP-FPM pm.max_children, choose static vs dynamic vs ondemand, and set the request-recycling values that match your actual traffic shape.
Read MoreSizing the InnoDB Buffer Pool for a 1 GB VPS: The Arithmetic Nobody Shows You
The default MySQL configuration on most VPS images allocates `128M` to the InnoDB buffer pool. On a 1 GB instance running WordPress, that leaves roughly 700 MB of RAM idle…
Read MoreNginx Upstream Keepalive on a VPS: Sizing Connection Pools With Measured Evidence
Without keepalive, every proxied request makes Nginx open a fresh TCP connection to your app server, run the handshake, serve, and tear it down. Under load this shows up as…
Read MoreKernel Page Cache on a Small VPS: What Is Actually Cached, and How to Prove It
A practical look at Linux page cache behaviour on 1–2 GB VPS instances: how dirty pages, reclaim pressure, and drop_caches really work, and what to measure before adding RAM.
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