Kerezovic.de – Blog https://kerezovic.de/en/blog/ Linux, infrastructure, self-hosting and practical IT experience. en-US Tue, 05 May 2026 07:53:14 +0200 https://kerezovic.de/assets/images/og-default.jpg Kerezovic.de – Blog https://kerezovic.de/en/blog/ kerezovic.de Proxmox running slow? Common causes https://kerezovic.de/en/blog/infrastructure/proxmox-slow/ https://kerezovic.de/en/blog/infrastructure/proxmox-slow/ Tue, 05 May 2026 07:53:14 +0200 Mirko Kerezovic Infrastructure

Proxmox is rarely the cause of performance issues. In most cases, memory, storage, or configuration are the real bottlenecks. This article explains the most common causes and how to fix them.

]]> Proxmox is rarely the cause of performance issues. In most cases, memory, storage, or configuration are the real bottlenecks. This article explains the most common causes and how to fix them. Warpinator – Beam Me Up! https://kerezovic.de/en/blog/getting-started/warpinator-peer-to-peer-transfer/ https://kerezovic.de/en/blog/getting-started/warpinator-peer-to-peer-transfer/ Tue, 28 Apr 2026 18:37:00 +0200 Mirko Kerezovic Getting Started

Warpinator enables fast and secure file transfers within your local network – no cloud, no accounts, no complicated setup.

]]> Warpinator enables fast and secure file transfers within your local network – no cloud, no accounts, no complicated setup. OneNote Alternative: Joplin – My Experience https://kerezovic.de/en/blog/real-world/joplin-onenote-alternative/ https://kerezovic.de/en/blog/real-world/joplin-onenote-alternative/ Sat, 25 Apr 2026 16:24:00 +0200 Mirko Kerezovic Real World

Joplin as an alternative to OneNote: my experience with Markdown, self-hosting and notes that stay under my control.

]]> Joplin as an alternative to OneNote: my experience with Markdown, self-hosting and notes that stay under my control. ZRAM on Linux and Proxmox – More Performance https://kerezovic.de/en/blog/infrastructure/zram-linux-proxmox/ https://kerezovic.de/en/blog/infrastructure/zram-linux-proxmox/ Sat, 18 Apr 2026 19:12:00 +0200 Mirko Kerezovic Infrastructure

Use ZRAM on Linux and Proxmox: less I/O, better performance and more stable systems with compressed RAM.

]]> Use ZRAM on Linux and Proxmox: less I/O, better performance and more stable systems with compressed RAM. Slow Wi-Fi Despite a Good Signal? https://kerezovic.de/en/blog/infrastructure/wifi-airtime-performance-issues/ https://kerezovic.de/en/blog/infrastructure/wifi-airtime-performance-issues/ Sat, 11 Apr 2026 15:48:00 +0200 Mirko Kerezovic Infrastructure

Why Wi-Fi slows down with many devices: airtime, jitter and Wi-Fi bridges explained with a real-world example from a network with 74 devices.

]]> Why Wi-Fi slows down with many devices: airtime, jitter and Wi-Fi bridges explained with a real-world example from a network with 74 devices. AdGuard Home? My Setup with Sync and Failover https://kerezovic.de/en/blog/infrastructure/adguard-home-sync-virtual-ip/ https://kerezovic.de/en/blog/infrastructure/adguard-home-sync-virtual-ip/ Sat, 04 Apr 2026 20:06:00 +0200 Mirko Kerezovic Infrastructure

AdGuard Home with synchronization, a virtual IP and high availability: a practical homelab setup.

]]> AdGuard Home with synchronization, a virtual IP and high availability: a practical homelab setup. Securely Erase Used Data Drives https://kerezovic.de/en/blog/security/securely-erase-data-drives/ https://kerezovic.de/en/blog/security/securely-erase-data-drives/ Sat, 28 Mar 2026 17:31:00 +0100 Mirko Kerezovic Security

Securely erase storage media on Linux, Windows and macOS: practical methods, recommendations and common mistakes.

]]> Securely erase storage media on Linux, Windows and macOS: practical methods, recommendations and common mistakes.