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Date: Wed, 22 Dec 2010 09:40:19 -0800 From: Jon Zhou <Jon.Zhou@...u.com> To: Eric Dumazet <eric.dumazet@...il.com> CC: "juice@...gman.org" <juice@...gman.org>, Stephen Hemminger <shemminger@...tta.com>, "netdev@...r.kernel.org" <netdev@...r.kernel.org> Subject: RE: Using ethernet device as efficient small packet generator -----Original Message----- From: Eric Dumazet [mailto:eric.dumazet@...il.com] Sent: Thursday, December 23, 2010 1:18 AM To: Jon Zhou Cc: juice@...gman.org; Stephen Hemminger; netdev@...r.kernel.org Subject: RE: Using ethernet device as efficient small packet generator > PGDEV=/proc/net/pktgen/eth4 You meant : PGDEV=/proc/net/pktgen/kpktgend_0 ??? With "PGDEV=/proc/net/pktgen/kpktgend_0", I can't pgset "queue_map_min 0" Only able to pgset "queue_map_min 0" with "PGDEV=/proc/net/pktgen/eth4" > echo "Configuring $PGDEV" > pgset "$COUNT" > pgset "$CLONE_SKB" > pgset "$PKT_SIZE" > pgset "$DELAY" > pgset "dst 10.10.11.2" > pgset "queue_map_min 0" > pgset "queue_map_max 7" > pgset "dst_mac 00:04:23:08:91:dc" > > ->it is ok > > > Here is the top result, why only kpktgend_0 is running? > Eric,can you share the pktgen script? Thank you If you want to control several kpktgend you need to send each one of them a full pktgen script. PGDEV=/proc/net/pktgen/kpktgend_0 script0 PGDEV=/proc/net/pktgen/kpktgend_1 script1 PGDEV=/proc/net/pktgen/kpktgend_2 script2 PGDEV=/proc/net/pktgen/kpktgend_3 script3 but these kpktgend can not share the same device? i.e. I can't add the device again? PGDEV=/proc/net/pktgen/kpktgend_1 #echo "Removing all devices" #pgset "rem_device_all" #echo "Adding eth4" pgset "add_device eth4" pgset "queue_map_min 1" pgset "queue_map_max 1" as I saw when pps reach 1M, throughput reach 900Mbps,the kpktgend_0 also reach 100% cpu (with intel 10G X520 nic,ixgbe)
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