Re: [LKP] [lkp] [sctp] a6c2f79287: netperf.Throughput_Mbps -37.2% regression

Hi, Aaron 1) I talked with Marcelo about this one. He said it might be related with cacheline. the new field distroyed the prior cacheline. So on top of commit 826d253d57b1, pls only add + unsigned long prsctp_param; to the end of struct sctp_chunk, then try. 2) if 1) still doesn't work, I may think about to drop prsctp_param in sctp_chunk, and reuse msg->expire_at. as for sent_count, I will put it to the mem hole of sctp_chunk. So pls also try the attachment patch, on top of commit a6c2f792873a Thanks.