Linux Rendu Ermai Memory Management Online WeChat Group Live Registration (2018.1.29-2.2)

This is the second thread of Teacher Song Baohua's "Second Threads of Linux: Process Scheduling and Memory Management", and the CSDN recording of the first thread "Getting through the Linux Thread Series: Processes, Threads and Scheduling" is located at: http://edu. csdn.net/huiyiCourse/series_detail/60?utm_source=wx2

This memory management live broadcast is in the form of WeChat group.

Live broadcast time:  2018.1.29-2.2, a total of five nights from 9:00 to 10:00.

Live format :

WeChat group picture, voice, and Q&A mode (constant screenshots + animation + voice, children's shoes in question can ask questions in the group at any time).

Outline:

1

Hardware principle and paging management

1. CPU addressing memory, virtual address, physical address

2. MMU and RWX permissions, kernel and user mode permissions

3. Memory zones: DMA, Normal and HIGHMEM

4. Linux memory management Buddy algorithm

5. Contiguous Memory Allocator (CMA)

2

Dynamic allocation and release of memory

1. slab 、 kmalloc / kfree 、 / proc / slabinfo 和 slabtop

2. The relationship between user space malloc/free and the kernel

3. mallopt

4. vmalloc

5. Out of memory (OOM), oom_score and oom_adj

6. Android process life cycle and OOM

3

Process memory consumption and leaks

1. The VMA of the process.

2. 4 concepts of process memory consumption: vss, rss, pss and uss

3. Several possibilities of page fault, major and minor

4. How to define application memory leaks

5. Application memory leak detection methods: valgrind and addresssanitizer

4

Swapping of memory and I/O

1. caching page

2. Detailed explanation of free command

3. read、write和mmap

4. file-backed pages and anonymous pages

5. swap and zRAM

6. Page Reclamation and LRU

5

Other engineering issues and tuning

1. DMA and cache coherence

2. memory cgroup

3. Performance tuning: page in/out, swapin/out

4. Some settings of Dirty ratio

5. swappiness

Registration method (add WeChat Linuxpsmm as a friend), send a registration red envelope, and join the live broadcast group:

Registration red envelope 2017.12.31-2018.1.10 333 yuan

Registration red envelope 2018.1.11-2018.1.17 380 yuan

Registration red envelope 2018.1.18-2018.1.27 420 yuan

Sign up for red envelopes 2018.1.28- 499 yuan