while I was looking  into this case in google, I see a value of MAXPHYS
in my kernel, there is a value called MAXPHYS=(128*1024) as default.
What should I set this value ?


i use 1024*1024




Yavuz wrote:
I have freebsd7 (amd64 bit)  and sata2 disk 7200 rpm.

it's running mail server which has services like pop3,imap,smtp and webmail on this machine.

When I type systat 1 -vmstat on command line, even I rarely see that disk usage hits 100%.
I have no problem as ram and cpu.  they is enough.

is there any way to increase disk performance without causing any problem ?

sysctl vfs.read_max=32 can help read performance
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