Pktgen测试

安装

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遇到“Could not open moddep file ‘/lib/modules/XXX/modules.dep.bin’”是dep问题，一般是由于kernel变后导致module依赖不对，可试着$sudo apt-get install –reinstall linux-image-3.13.0

or 运行$depmod -a后就可以了。

从github上下载example的script：

测试：使用2个CPU测试发包速率

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client 1 pkt size	client 1 pps	client1 Mb/Sec	Client 1 CPU Usage	Client 2 CPU Usage	Vyos CPU Usage
64	1242692	636	core1: 100%	core1:100%	core6:100%
128	1235203	1264	core1:100%	core1:100%	core6:100%
256	1200064	2457	core1:100%	core1:100%	core6:100%
512	1195420	4896	core1:100%	core1:100%	core6:100%
1024	1191516	9760	core1:100%	core1:100%	core6:100%
1472	835227	9835	core1:100%	core1:30%	core6:5%
2048	603254	9883	core1:100%	not recv	not recv

2. 测试过程：client 1和client 2都调用pktgen不断发包给对方。

client  pkt size	client 1 pps	client1 Mb/Sec	client 2 pps	client 2 Mb/Sec	Client 1 CPU Usage	Client 2 CPU Usage	Vyos CPU Usage
64	1211888	620	688195	352	core1: 100%	core1:100%	core6:100%
128	1204561	1233	674198	690	core1:100%	core1:100%	core6:100%
256	1183999	2424	599256	1227	core1:100%	core1:100%	core6:100%
512	1170995	4796	635350	2602	core1:100%	core1:100%	core6:100%
1024	1174766	9623	605108	4957	core1:100%	core1:100%	core6:100%
1472	832268	9800	714634	8415	core1:100%	core1:30%	core6:less than5%

Pktgen-dpdk

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在vyos中可使用iptraf监控，或自己写脚本。

1. client2->vyos->client1. client 1 is receiver, client 2 is sender. Single Steam

client  pkt size	client 1 pps	client1 Mb/Sec	client 2 pps	client 2 Mb/Sec	Client 1 CPU Usage	Client 2 CPU Usage	Vyos CPU Usage
64	2799360	127	14390041	9671	1: 100%	all:100%	3:100%
128	2843584	335	8445573	9999	1:100%	all:100%	3:100%
256	2721728	651	4528806	9999	1:100%	all:100%	3:100%
512	3073600	1487	2349520	9999	1:100%	all:100%	3:100%
1024	3075456	2995	1197265	9999	1:100%	all:100%	3:100%
1472	2008020	2809	837765	9999	1:50%	all:100%	3: less than 5%

2. client2->vyos->client1. client 1 is receiver, client 2 is sender. Multiple Steam

config:

src.mac start 0 00:00:00:00:00:00

src.ip start 0 10.0.2.1

src.ip min 0 10.0.2.1

src.ip max 0 10.0.2.254

src.port start 0 22

src.port min 0 22

src.port max 0 9999

dst.port start 0 22

dst.port min 0 22

dst.port max 0 9999

client  pkt size	client 1 pps	client1 Mb/Sec	client 2 pps	client 2 Mb/Sec	Client 1 CPU Usage	Client 2 CPU Usage	Vyos CPU Usage
64	2843713	162	14384361	9666	1: 100%	all:100%	3:100%
128	2835264	334	8445586	9999	1:100%	all:100%	3:100%
256	2712828	653	4520795	9999	1:100%	all:100%	3:100%
512	3079104	1491	2349521	9999	1:100%	all:100%	3:100%
1024	3072960	2997	1197266	9999	1:100%	all:100%	3:100%
1472	2010541	2802	837767	9999	1:50%	all:100%	3: less than 5%

3. Huge Route Table Entry

Manually add 50. No much big differences.

TODO: please use the big data in www.routeviews.org

Parameter Tuning: only a small perf difference

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Reference: Tuning 10Gb network cards on Linux

Jumbo frame: mtu=9000.

transmission queue size from 500 to 3000