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chengc_netapp.com (Cheng Cui)
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User Since
Nov 23 2015, 12:29 AM (218 w, 2 h)

Recent Activity

Tue, Jan 21

chengc_netapp.com accepted D23160: Fixing RTO timer during SACK loss recovery.

Tested in both bsd11 and bsd12. Without this fix, I can find a 2nd retransmission triggered by the persistent timer, not the RTO timer.

Tue, Jan 21, 8:21 PM
chengc_netapp.com accepted D23119: Send CWR whenever a ECN-enabled session runs into RTO.

Did not find any problem in bsd11.

Tue, Jan 21, 7:21 PM
chengc_netapp.com accepted D23118: Fix IP ECN codepoint for SACK retransmissions (RFC3168).

Did not find any problem in bsd11.

Tue, Jan 21, 7:18 PM
chengc_netapp.com accepted D22670: Send immediate ACK on receipt of CWR.

Did not find any problem.

Tue, Jan 21, 7:16 PM

Fri, Jan 17

chengc_netapp.com added a comment to D22670: Send immediate ACK on receipt of CWR.

I am testing this patch now. Will update from my side in one or two days.

Fri, Jan 17, 2:12 PM

Mon, Dec 30

chengc_netapp.com added a comment to D22644: Fix the CE reflector receiver state machine in DCTCP.

Also, you can remove the CCF_DELACK definition from cc.h.

Mon, Dec 30, 5:04 PM

Sun, Dec 29

chengc_netapp.com accepted D22644: Fix the CE reflector receiver state machine in DCTCP.
Sun, Dec 29, 5:08 PM

Nov 18 2019

chengc_netapp.com accepted D22438: Improve NewReno after_idle ssthresh per RFC2861 Sec.2.
Nov 18 2019, 7:10 PM
chengc_netapp.com accepted D21798: Restrict cwnd growth on app-limited flows.
Nov 18 2019, 7:07 PM

Oct 25 2019

chengc_netapp.com requested changes to D21798: Restrict cwnd growth on app-limited flows.
Oct 25 2019, 2:47 PM

Aug 27 2019

chengc_netapp.com added inline comments to D20549: fixing sysctl interface for DCTCP and types of dctcp variables.
Aug 27 2019, 2:51 PM

Aug 20 2019

chengc_netapp.com added inline comments to D20549: fixing sysctl interface for DCTCP and types of dctcp variables.
Aug 20 2019, 4:01 PM

Aug 7 2019

chengc_netapp.com added inline comments to D19047: TCP Dynamic Burst Limit.
Aug 7 2019, 6:52 PM
chengc_netapp.com added a comment to D19047: TCP Dynamic Burst Limit.

I believe rS87145 was submitted because of some unexpected DelayedACK
implementation, or it might be just the DelayedACK was expecting two full MSS
(instead of two segments that updated later) in FreeBSD 4.2/4.3 in 2001.

Aug 7 2019, 2:36 PM

Jul 26 2019

chengc_netapp.com added a comment to D19118: Add Boundary and Overflow checks in Cubic formulas.

I prefer D18982 to be submitted. If D18982 is submitted, we don't need this patch as D18982 covers everything here.

Jul 26 2019, 3:06 PM

Jun 11 2019

chengc_netapp.com requested changes to D20549: fixing sysctl interface for DCTCP and types of dctcp variables.
Jun 11 2019, 9:07 PM

Mar 25 2019

chengc_netapp.com accepted D18954: Implement Cubic-specific After-Idle reaction.

Looks good to me. Will let @lstewart make the final decision.

Mar 25 2019, 8:30 PM

Feb 5 2019

chengc_netapp.com added inline comments to D18954: Implement Cubic-specific After-Idle reaction.
Feb 5 2019, 8:16 PM

Jan 31 2019

chengc_netapp.com accepted D17614: RFC6582 - prevent cwnd to collapse down to 1 mss after exiting recovery.

Looks good. I think Richard can update more that we recently tested this patch.

Jan 31 2019, 4:59 PM · transport

Jan 29 2019

chengc_netapp.com accepted D18897: Add a simple port filter to SIFTR.

Looks good. Thanks.

Jan 29 2019, 9:11 PM

Jan 28 2019

chengc_netapp.com added inline comments to D18897: Add a simple port filter to SIFTR.
Jan 28 2019, 2:37 PM

Jan 25 2019

chengc_netapp.com added inline comments to D18954: Implement Cubic-specific After-Idle reaction.
Jan 25 2019, 3:30 PM

Jan 18 2019

chengc_netapp.com accepted D18885: Make SIFTR work again.

Looks good to me. If the summary can also be updated to represent the new context, that will be better. Thanks.

Jan 18 2019, 8:15 PM
chengc_netapp.com added inline comments to D18885: Make SIFTR work again.
Jan 18 2019, 2:17 PM

Jan 15 2019

chengc_netapp.com added a comment to D17614: RFC6582 - prevent cwnd to collapse down to 1 mss after exiting recovery.

I have been testing this patch against a stable/11 build. Over a 1Gb/s link with emulated 40ms RTT and (10^-4) loss rate, I use iperf from a FreeBSD node to send traffic to a 4.15.0-39-generic Ubuntu16.04 client.

Jan 15 2019, 8:54 PM · transport

Jan 2 2019

chengc_netapp.com updated chengc_netapp.com.
Jan 2 2019, 3:14 PM
chengc_netapp.com added a comment to D17614: RFC6582 - prevent cwnd to collapse down to 1 mss after exiting recovery.

Thanks for the review request.
I will test this patch in Emulab.net before I give more feedback.

Jan 2 2019, 3:04 PM · transport