Description
This article provides useful diagnostics commands for troubleshooting NTurbo-related issues.
Scope
FortiGate.
Solution
Debug command:
fnsysctl cat /proc/nturbo/<n>/drv <------ '<n>' is the NTurbo ID.
# fnsysctl cat /proc/nturbo/0/drv
Turbo interface ID: 0
=======================================================================
Driver RX/TX: 0/0
TX hang: No
Free/Used buffers: 48128/8192
Alloc fail: 0, Bad qid: 0
queue ready: 0x0000001f, 0x00000000
RXQ_0(0,374): IN 0 OUT 0 DROP 0 NRDY 0 Fullness 0, Peak 0
TXQ_0(0,374): IN 0 OUT 0 DROP 0 USR_DROP 0 BUFERR 0
RXQ_1(2,375): IN 0 OUT 0 DROP 0 NRDY 0 Fullness 0, Peak 0
TXQ_1(2,375): IN 0 OUT 0 DROP 0 USR_DROP 0 BUFERR 0
RXQ_2(4,373): IN 0 OUT 0 DROP 0 NRDY 0 Fullness 0, Peak 0
TXQ_2(4,373): IN 0 OUT 0 DROP 0 USR_DROP 0 BUFERR 0
……………
- 'Driver RX': number of packets received from NP6.
- 'Driver TX': number of packets transmitted by NTurbo.
- 'RXQ_0(0,374)': (NTurbo queue, ipsengine PID).
'RXQ':
- 'IN': packets delivered to IPs engine.
- 'OUT': packets received by IPs engine.
- 'DROP': packets lost during delivery.
- 'NRDY': packets dropped due to IPs engine failure.
'TXQ':
- 'IN': packets sent by IPs engine.
- 'OUT': packets transmitted by NTurbo.
- 'DROP': packet dropped by NTurbo due to slow TX speed.
- 'USR_DROP': packets dropped from IPs engine due to matching.
- 'BUFERR': packets dropped due to buffer error.
Note: Running the fnsysctl command requires Super Admin privileges; otherwise, it will return the error message 'Unknown action 0'.
Related documents:
Technical Note: How to troubleshoot NTurbo on a FortiGate
NTurbo offloads flow-based processing
