- Debian 13 “Broken pipe” errors: when it’s harmless and when it’s your first warning (case #15)
- Debian 13 LACP Bonding Flaps: Proving Whether the Switch or Host Is Wrong
- Ubuntu 24.04: Swap on SSD — do it safely (and when you shouldn’t) (case #50)
- Ubuntu 24.04 Kernel Parameter Tuning: the 5 sysctls that matter (and the 10 that don’t) (case #42)
- Debian 13 Swapfile Pitfalls: Create It Right (Permissions, fstab, Priority)
- Ubuntu 24.04 tmpfs/ramdisk gone wild: stop it eating RAM (without breaking apps)
- Ubuntu 24.04: Disk “hangs” under load — timeout settings that prevent full stalls (case #90)
- Debian 13: NFS is slower than expected — prove it’s sync/rsize/wsize and fix it (case #23)
- Debian 13: ZRAM/Zswap — when it saves your box and when it backfires
- Debian 13: Swap Is Growing and Performance Tanks — Memory Pressure Fixes That Actually Help
- Ubuntu 24.04 Memory Ballooning Surprises: Set Sane Limits and Stop Swap Storms (Case #16)
- Debian 13 “Broken pipe” errors: when it’s harmless and when it’s your first warning (case #75)
- Debian 13: Disk writeback storms — tune vm.dirty settings without data risk (case #45)
- Ubuntu 24.04: Memory ballooning surprises — set sane limits and stop swap storms (case #76)
- Ubuntu 24.04 swapiness and vm.dirty settings: the small tunings that actually matter
- Ubuntu 24.04: Random disconnects — debug NIC drops and offloads without superstition
- Debian 13: TCP retransmits are killing performance — find where the loss really is
- Ubuntu 24.04: CIFS is painfully slow — the mount options that usually fix throughput (case #22)
- Ubuntu 24.04: Performance tank after update — the first 6 checks that reveal the culprit
- Ubuntu 24.04 CPU Steal and Virtualization Overhead: How to Spot It and What to Do (Case #44)
- Ubuntu 24.04 OOM killer: prove it, fix it, prevent repeats
- Debian 13 SATA Link Resets: Prove It’s the Cable or Backplane, Not Linux
- Ubuntu 24.04: iperf shows speed but app is slow — the hidden bottlenecks to check (case #24)