Are there potential problems with large session.sid_length and session.sid_bits_per_character values?

Question

PHP

For example, given:
1) session.sid_length=128, session.sid_bits_per_character = 4
2) Session ID changes frequently, let's say once every half an hour
3) Average online = 10k users
So, can the constant generation of long session IDs create a significant load on hardware ?
Or something else?

Answer 1

https://www.php.net/manual/ru/session.configuratio...
And how much do you need? The documentation indicates the maximum if it exists or the optimal value.

session.sid_length integer
session.sid_length allows you to specify the length of the session ID. This value must be in the range 22-256

session.sid_bits_per_character integer
session.sid_per_character allows you to set the number of bits in one session identifier character. The available values ​​are '4' (0-9, af), '5' (0-9, av), and '6' (0-9, az, AZ, "-", ","). The default is 4. The more bits, the stronger the session identifier. 5 is recommended in most environments.

2) The session ID changes frequently, let's say once every half an hour
3) Average online = 10k users

the standard work of sessions is generally everywhere and with much more online work. Why should there suddenly be problems?