New Cgroup Subsystem for Buffer Write io and Network RX Control in Kernel
summary
Describes two new Linux kernel cgroup subsystems added to control buffered write I/O and network receive (RX) traffic on kernels before 4.x. Explains using these cgroup controls to assign different I/O and network RX resource values to workloads for QoS management, with implementation coming from Tencent.
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chapters (11)
- 0:00Intro
- 2:281.1 Buffer write limit - Backgroud
- 3:28How Buffer write work
- 6:031.3 Apply io less mechanism to memory cgroup
- 9:081.5 Writeback kworker should know memory cgroup
- 11:031.6 Buffer write soft limit
- 14:041.7 Buffer write limit - data
- 16:072.1 Net_rx limit - background
- 20:592.2 Net rx limit - soft
- 24:482.3 Net_rx limit - data
- 28:371.2 Assign block cgroup info to inode
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