Kernel features
- Overview of kernel features and interfaces
- System configuration optimization
- eBPF feature support in Alibaba Cloud Linux
- Change the kernel version
- Change the kernel preemption mode
- SCHED_IDLE feature of cgroups
- Use memory isolation for OOT drivers
- Use EROFS
- Use the kdumpctl tool to view the boot logs for kernel crash dumps
- Use the Memory Access Optimization with Kdump Enabled feature on an Arm64 architecture
- Configure the crashkernel parameter
- Use the latency statistics feature of memsli and sched_sli
- View storage device IO D2C time in /proc/diskstats on Alibaba Cloud Linux 3
- Configure IOMMU passthrough mode
- Enhanced soft lockup detection feature
- Troubleshoot the task scheduling latency issue of the ksoftirqd thread
- Optimize the operation of reading the /proc/cpuinfo file to obtain the CPU frequency
- Configure the amount of memory reserved for the page cache
- Fine-tune the system dirty page thresholds and writeback control
- Fine-tune the dirty page thresholds and writeback control of file systems
- Alibaba Cloud Linux:Call the drop_caches interface to clear the page cache
- Overview of the Memcg Exstat feature
- Memcg global minimum watermark rating
- Memcg QoS feature of the cgroup v1 interface
- Memcg backend asynchronous reclaim
- Memcg OOM priority policy
- THP reclaim
- Configuration guide for TCP-RT
- Modify the TCP TIME_WAIT timeout
- Enable the cgroup writeback feature
- Configure blk-iocost weight-based throttling
- Enhance the monitoring of block I/O throttling
- JBD2 optimization interface
- Track I/O latency
- Create hard links across project quotas
- Detect I/O hangs of file systems and block layers
- Configure the context readahead feature of file systems to improve file access performance
- Configure tcm_loop device parameters
- Optimizations for the copy operations of TCMU
- Security hardening for user namespaces in Alibaba Cloud Linux
- Enable PSI for cgroup v1
- Enable CPU Burst on the cgroup v1 interface
- Group identity feature
- Statistical state change of anonymous pages in the /proc/meminfo file
- Enhance the visibility of container resources
- Shared Memory Communication (SMC)
- Unified Kernel Fault Event Framework (UKFEF)
- Hugetext
- Catching kernel memory corruption issues (KFENCE)
- Page Cache Limit feature
- Disable the IPVS estimation feature to prevent network jitters
- Code duptext feature
- vtoa user guide
- Optimize network interrupt handling with vCPU pinning