![]() ![]() In the rest of the memory the kernels keep a page pool to be able to fulfill the requests for a new page. The size of the page cache varies depending how much memory is used by the kernel and the processes. The sum of these values is the page cache. shows two separate values(cached and buffer). ![]() Monitoring applications like top, free, etc. There are two parts, one for caching the metadata of the filesystem (superblocks, inodes, etc.) the other part is for the data blocks stored on the disk. The remaining RAM is used for page caching. The consumed physichal memory used a specific process called Resident Set Size, RSS. The pages used by the kernel will be never swapped out.īeside the kernel the processes also require physichal pages for their code, static data and stack. When the allocated slab is not needed anymore, the kernel might free it. The loading of the kernel and its modules requires some more memory, so the kernel allocates slab caches. The most common page size under Linux is 4096 Bytes.Īt the system boot, the vmlinuz is loaded to the very beginning of the RAM. The size of pages depends on the architecture of the server, and setup by the OS. ![]() The physichal memory (RAM) is divided into equally sized parts, called memory pages. The Linux itself does not limit the physichal memory usage of a process, either running under root privileges, or not. This article will show you how to find this process and how to limit its memory usage. This can happen fast and slowly(within weeks) as well. In various cases a process can easily eat up the memory of a server.
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