Buffer stuff

[mfurnival]

This is probably a gap in my understanding but here goes. What is the purpose of the VeryBig, Large and Huge buffers? MTU for ethernet is 15xx bytes so why would I ever need a buffer of 4520 bytes? And if I see a lot of buffer misses in these areas what is likely to be the cause?

Small buffers, 104 bytes

Middle buffers, 600 bytes

Big buffers, 1536 bytes

VeryBig buffers, 4520 bytes

Large buffers, 5024 bytes

Huge buffers, 18024 bytes

[ashok_boin]

Hi,

Buffer sizes are designed with respect of all possible interfaces. Yes, for Ethernet the MTU size is 1500 bytes. But, what about FDDI interfaces? It's 4352 bytes. Like this, the buffers are designed in consideration with different types of interfaces and technologies. Hope the answer cleared your doubt.

Thank you

-Ashok.

[mfurnival]

Yeah, that is true but it still does not explain the Huge/VeryBig buffers.