Is this a single stream? All your traffic appears to be hashing
to e1000g1. You are already using L4 policy (transport protocol
information such as ports). If you have multiple streams and are
still getting the same results, try a different policy setting
(e.g. dladm modify-aggr -P L3,L4 aggr1). The man page does explain
this rather well.

liuzhengw wrote:
Can I use the policy L4 ?
I use the dladm show-aggr -s -i 4 to test the network bandwidth.and use the 
iometer to give it stress.
but the result is not very good .the aggr1 bandwidth is the same with a single 
e1000g card.

r...@opensolaris:~# dladm show-aggr
LINK            POLICY   ADDRPOLICY           LACPACTIVITY  LACPTIMER   FLAGS
aggr1           L4       auto                 off           short       -----
r...@opensolaris:~# dladm show-aggr -s -i 4
LINK        PORT      IPACKETS RBYTES OPACKETS OBYTES IPKTDIST OPKTDIST
aggr1       --        101717260 125773579513 207642925 187141265486 -- --
-- e1000g0 4055 1026873 3335 747493 0.0 0.0 -- e1000g1 101713205 125772552640 207639590 187140517993 100.0 100.0 aggr1 -- 165658 201296250 369180 113417467 -- -- -- e1000g0 0 0 3 590 0.0 0.0 -- e1000g1 165658 201296250 369177 113416877 100.0 100.0 aggr1 -- 161590 186946394 375078 117261414 -- -- -- e1000g0 1 1518 3 502 0.0 0.0 -- e1000g1 161589 186944876 375075 117260912 100.0 100.0 aggr1 -- 111482 125969868 257906 80692494 -- -- -- e1000g0 12 10284 3 502 0.0 0.0 -- e1000g1 111470 125959584 257903 80691992 100.0 100.0
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