NRF24L01 bytes transfer!!

Hi all,
I'm working on a project where I control two servos.. I'm using two arduino pro mini two nrf24l01 and two pots. ..
Also my question is much more general..how I can see how many bytes transfered?
Thanks

count received packets, multiply with payloadsize

I didn't understand enough. Please could you be more specific?
Thanks

How I could measure received packs?

Your libaray: RF24? , MiRF? or ??? has a function for reading a package .. and you've set a size for the payload ?

maybe its time to post your code..

For example on this code

#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>
#define CE_PIN 9
#define CSN_PIN 10
#define JOYSTICK_X A7


const uint64_t pipe = 0xE8E8F0F0E1LL;

RF24 radio(CE_PIN, CSN_PIN);
int joystick[1];

void setup()
{
Serial.begin(9600);
radio.begin();
radio.openWritingPipe(pipe);
}

void loop()
{
joystick[0] = analogRead(JOYSTICK_X);
radio.write( joystick, sizeof(joystick) );
}

when you look at the library:

RF24 KEYWORD1
begin KEYWORD2
setChannel KEYWORD2
setPayloadSize KEYWORD2
getPayloadSize KEYWORD2
print_details KEYWORD2
startListening KEYWORD2
stopListening KEYWORD2
write KEYWORD2
available KEYWORD2
read KEYWORD2
openWritingPipe KEYWORD2
openReadingPipe KEYWORD2

Use "setPayloadSize" to alter size to 2 (I think default is 32 bytes)
take a look

For example nrf24l01 says that could transfer 2Mbps and I want to see how many bytes transfered with this code

Don't see what you actually want to know.

A datasheet (here) shows a total packet.
You can change transfer mode, on air speed and payload size using the libs functions.