npty parameter usage from memory

[Vijaya Ragavan_1]

now i have npty=60 i want change to 120 regarding we have more than 60 user at the time.
i want to know how much phy Memory will take on the same.

[Bill Hassell]

This is just a small table with each entry few bytes. You can raise npty (and nstrpty, nstrtel) to several thousand and you might use a few megs. The table size is insignificant compared to the memory load for each additional login.