Faster, more memory efficient and more ordered dictionaries on PyPy https://morepypy.blogspot.com/2015/01/faster-more-memory-efficient-and-more.html https://en.wikipedia.org/wiki/Stackless_Python Stackless Python, or Stackless, is a Python programmin…

Managing Your App's Memory In this document How Android Manages Memory Sharing Memory Allocating and Reclaiming App Memory Restricting App Memory Switching Apps How Your App Should Manage Memory 「高效内存的16条策略」 Use services sparingly Release memory when…

A data processor supports the use of multiple memory models by computer programs. At a device external to a data processor, such as a memory controller, memory transactions requests are received from the data processor. Each memory transaction reques…

根据程序的局部性原理,在主存与CPU之间设置的一个高速的容量较小的存储器,叫做cache. ARM cache架构由cache存储器和写缓冲器(write-buffer)组成.其中Write_buffer是cache按照FIFO原则向主存写的缓冲器. cache可以分为Dcache,Icache.分别cache data和 instruction.其中Dcache必须在MMU开启后才能在CP15寄存器中使能,Icache在MMU未使能的情 况下,也是可以使能的. 在armv6版本之前的memor…

http://www.bogotobogo.com/cplusplus/memoryallocation.php Variables and Memory Variables represent storage space in the computer's memory. Each variable presents a convenient names like number or result in the source code. Behind the scenes at runtime…

##redis配置详解 # Redis configuration file example. # # Note that in order to read the configuration file, Redis must be # started with the file path as first argument: # # ./redis-server /path/to/redis.conf # Note on units: when memory size is needed, i…

1 collections系列 方法如下 class Counter(dict): '''Dict subclass for counting hashable items. Sometimes called a bag or multiset. Elements are stored as dictionary keys and their counts are stored as dictionary values. >>> c = Counter('abcdeabcdabcaba'…

1.快照(snapshots) 缺省情况情况下,Redis把数据快照存放在磁盘上的二进制文件中,文件名为dump.rdb.你可以配置Redis的持久化策略,例如数据集中每N秒钟有超过M次更新,就将数据写入磁盘:或者你可以手工调用命令SAVE或BGSAVE. 数据保存的目录: 工作原理 Redis forks. 子进程开始将数据写到临时RDB文件中. 当子进程完成写RDB文件,用新文件替换老文件. 这种方式可以使Redis使用copy-on-write技术. 2.APPEND ONLY MODE(…

# Redis configuration file example # Redis示例配置文件 # Note on units: when memory size is needed, it is possible to specify # it in the usual form of 1k 5GB 4M and so forth: # 注意单位问题:当需要设置内存大小的时候,可以使用类似1k.5GB.4M这样的常见格式: # # 1k => 1000 bytes # 1kb => 102…

大部分常见设置都翻译了,还有一些是从网上复制的(懒) # Redis configuration file example. ## Redis配置文件示例 # # Note that in order to read the configuration file, Redis must be # started with the file path as first argument: ## 注意:为了读取配置文件,Redis必须把配置文件路径作为第一参数: # # ./redis-server…