NetWare r7000 Merlin system virtual memory creation failed, prompting that the USB disk reading and writing speed does not meet the requirements. Solution, is it necessary to create virtual memory??

USB disk [/dev/sdb] Reading and writing speed is too low , Does not meet the plug-in requirements !
【 Virtual memory 】 Plug in requirements USB Disk device read no less than 20MB/s, The writing speed is not less than 30MB/s, This test speed is the same as USB The actual speed of the disk may vary , The above reading and writing speed is for reference only !
Under the same test conditions ,RT-AC86U,RT-AX88U Wait for the model flash Read as 10MB/s, Written as 30MB/s
 

First use ssh The tool enters the background of the router , And then use xshell、putty Wait for the software to log in , The user name and password is the user password of the background of the webpage , Enclosed xshell New connection settings for . Execute the order , among R_LIMIT=20 representative 20M Reading speed .

W_LIMIT=20 representative 20M Write speed .

sed -i '7,8c R_LIMIT=20\nW_LIMIT=20' /koolshare/scripts/swap_make.sh

There are some usb2.0U disc , The writing speed is about 4-5M/s, You can change it to W_LIMIT=4：

sed -i '7,8c R_LIMIT=20\nW_LIMIT=4' /koolshare/scripts/swap_make.sh

But even if the mount succeeds , In fact, the utilization rate has always been 0, why ？ Because the memory utilization of the hardware is as follows ： Due to mesh R7000 Yes 256M Of RAM Memory , In fact, only 136M about , About half of the memory , So in fact, there is no need to mount virtual memory . But if the physical memory of other routing models is only 128M The following words , Merlin system is installed again , You really need to install a virtual memory .