最後更新: 2019-11-04

介紹

Memory considerations (一般情況, 4G RAM 都夠)

R-Studio stores information about found files in computer memory.

If there are too many files, R-Studio may run out of it.

最後更新: 2019-10-23

介紹

kworker(Kernel Worker)

"kworker" is a placeholder process for kernel worker threads,

which perform most of the actual processing for the kernel,

especially in cases where there are interrupts, timers, I/O, etc.

最後更新: 2019-10-18

介紹

HomePage: https://github.com/axboe/fio

支持許多種不同的I/O引擎, 包括: mmap, sync ... libaio, rdma, posixaio ...

( 列出 engine: fio --enghelp )

(--enghelp=[ioengine[,command]])

engine

sync

Basic read(2) or write(2) I/O.

lseek(2) is used to position  the  I/O location.  

See fsync and fdata-sync for syncing write I/Os.

libaio

Linux native asynchronous I/O.

Note that Linux may only support queued behavior with non-buffered I/O
(set `direct=1' or `buffered=0')

(buffered=bool    # Default: 1; use buffered I/O. This is the opposite of the direct option.)

posixaio

POSIX  asynchronous  I/O  using  aio_read(3) and aio_write(3).

mmap  

File is memory mapped with mmap(2) and data copied to/from using memcpy(3)