Bug 115

Summary:	pktgen panic when using big sized pcap file
Product:	DPDK	Reporter:	Amin Latifi (a.latifi.al)
Component:	other	Assignee:	Amin Latifi (a.latifi.al)
Status:	CONFIRMED ---
Severity:	major	CC:	ajit.khaparde, keith.wiles
Priority:	Normal
Version:	18.11
Target Milestone:	---
Hardware:	x86
OS:	Linux

Description Amin Latifi 2018-12-01 07:45:49 CET

Hi,

I try to send 352MB sized pcap file using pktgen (version 3.5.9), program fail with bellow message:

!PANIC!: Cannot init port 0 for 791615 PCAP packets 0: 0) ( 0: 0) ( 0: 0)


The command used is:
./pktgen -c 0xff -n 3 --socket-mem=512,512 --file-prefix=pg  -w 4:00.1 -- -m 1.0 -T -P -s 0:/var/home/pcap/bigFlows.pcap 

Link to pcap file:
https://s3.amazonaws.com/tcpreplay-pcap-files/bigFlows.pcap

Comment 1 Keith Wiles 2018-12-01 16:34:56 CET

The problem is the PCAP file is bigger than the available memory you allocated to DPDK / Pktgen.

In the latest DPDK 18.11 you can remove the --socket-mem 512,512 and it should run OK. If you need to restrict Pktgen/DPDK to a fixed size of memory then you need to increase the amount of memory you are giving DPDK in the --socket-mem 512,512 option.

Comment 2 Ajit Khaparde 2018-12-01 21:24:34 CET

Amin, please let us know if Keith's suggestion helps. Thanks

Comment 3 Amin Latifi 2018-12-02 07:22:16 CET

(In reply to Ajit Khaparde from comment #2)
> Amin, please let us know if Keith's suggestion helps. Thanks

No, I removed "--socket-mem=512,512" and unfortunately it doesn't help.

Comment 4 Keith Wiles 2018-12-02 17:25:27 CET

I must be the latest change that was made in app/pktgen-pcap.c file.

Please look in that files and locate the '#if 0' that looked at the size of the pcap file and change it back to #if 1 and recompile to see if that fixes the problem.