Context switch can be 3 times slower in virtual environment such as VMware ESX

Tsuna analyzes how match time it takes to make a context switch. All analyzed chips are Multi-core Intel CPUs. OS / scheduler used – standard Linux Kernel. Results: depends on what we call a context switch (theoretical / real world) and what we measure is: 1000 ns – 4500 ns (up to 45000 ns – […]

Replacing motherboard with Intel RAID 1 (mirror)

Yesterday I needed to replace motherboard with active boot volume, that consisted of RAID 1 (mirror). There were two possibilities of where Intel RAID controller (ICH10R) keeps RAID configurations: in controller in RAID HDDs in both places How things went: Power off Replace broken motherboard with new one Power on First boot slow (perhaps installing […]