装两块硬盘会不会让电脑变得更快呢？

tomcat.xin

发现硬盘在读写时整个系统都会变慢，所以突发奇想，装两块硬盘，让经常读写硬盘的操作在一块硬盘上进行（比如编译一些大型软件），而系统运行在另外一块硬盘上，这样在第二块硬盘上读写大量数据时，系统是不是就不会变的很慢呢？
谢谢
PS:
本机CPU够快，内存够大，系统变慢是由硬盘读写引起的

d00m3d

Your approach depends on the access time of individual HDD, it may or may not be better.

If you use both HDD to build a RAID0, it may be faster.

Alternatively, there are several ways to gain a little bit higher performance:

1. Recompile the kernel with the better CPU optimization
2. Use higher version of gcc to compile the kernel
3. Always enable DMA and increase the read ahead buffer, e.g.

hdparm -c1 -d1 -u1 -a1024 /dev/xxx

(DMA for SATA/SCSI HDD may not work but the change of read ahead buffer should always work)

4. Make use of tmpfs

tomcat.xin

Thank you!