diff --git a/minutes/2021-09-17.md b/minutes/2021-09-17.md new file mode 100644 index 0000000..5c4b892 --- /dev/null +++ b/minutes/2021-09-17.md @@ -0,0 +1,22 @@ +--- +Theme: Regular Meet +Place: https://meet.jit.si/ILUGD_HHC_QUIZ +Start: 09:00 PM IST +End : 10:30 PM IST +--- + +## REISUB (BUSIER) Sequence / Magic SysRq Keys +We talked about the adverse effects of forcefully powering off a computer. +Kernel offers Magic SysRq keys that offers gracefully shutting down a system even after a freeze by performing emergency sync, remounting hard disk as read only, trigerring oom killer and more. + +— Hritik + + +## XDP +XDP is a work-in-progress in the Kernel which acts as a entry level firewall directly interacting with the NIC via DMA. This technique offers much greater speed at dropping/filtering useless packets. +More: https://en.wikipedia.org/wiki/Express_Data_Path + +A good resource about the journey of network data from NIC to Application layer +https://packagecloud.io/blog/monitoring-tuning-linux-networking-stack-sending-data/#transmit-data-with-ndo_start_xmit + +— Tux