Chelsio Communications Chelsio T5 Uživatelská příručka stáhnout pdf (Strana 89)

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Chapter V. WD-UDP

Chelsio T5/T4 Unified Wire For Linux Page 89

[root@r9 ~]# ifconfig eth1|grep inet

inet addr:192.168.2.111 Bcast:192.168.2.255 Mask:255.255.255.0

inet6 addr: fe80::7:4300:104:465a/64 Scope:Link

[root@r9 ~]#

[root@r10 ~]# ifconfig eth1|grep inet

inet addr:192.168.2.112 Bcast:192.168.2.255 Mask:255.255.255.0

inet6 addr: fe80::7:4300:104:456a/64 Scope:Link

[root@r10 ~]#

For this benchmark, we need a simple “accelerate all” configuration on both nodes:

[root@r9 ~]# cat /etc/libcxgb4_sock.conf

endpoint {interface=eth1 port=0}

[root@r9 ~]#

[root@r10 ~]# cat /etc/libcxgb4_sock.conf

endpoint {interface=eth1 port=0}

[root@r10 ~]#

On R10, we run udpserver on port 9000 without libcxgb4_sock preloaded, and on port 90001

with preload:

[root@r10 ~]# /usr/local/src/hpcbench/udp/udpserver -p 9000 &

[1] 11453

[root@r10 ~]# TCP socket listening on port [9000]

[root@r10 ~]# LD_PRELOAD=libcxgb4_sock.so

/usr/local/src/hpcbench/udp/udpserver -p 9001 &

[2] 11454

[root@r10 ~]# TCP socket listening on port [9001]

[root@r10 ~]#

Then on r9, we run udptest to port 9000 to see the host stack UDP latency:

[root@r9 ~]# /usr/local/src/hpcbench/udp/udptest -r 5 -a -h 192.168.1.112 -p

9000

Running the same test with libcxgb4_sock:

[root@r9 ~]# LD_PRELOAD=libcxgb4_sock.so /usr/local/src/hpcbench/udp/udptest

-r 5 -a -h 192.168.1.112 -p 9001

1 2 ... 84 85 86 87 88 89 90 91 92 93 94 ... 459 460

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