Re: Request for Testing: TCP RACK
- Reply: Nuno Teixeira : "Re: Request for Testing: TCP RACK"
- In reply to: Drew Gallatin: "Re: Request for Testing: TCP RACK"
- Go to: [ bottom of page ] [ top of archives ] [ this month ]
Date: Sun, 17 Mar 2024 20:26:45 UTC
Hello, > I don't have the full context, but it seems like the complaint is a performance regression in bonnie++ and perhaps other things when tcp_hpts is loaded, even when it is not used. Is that correct? > > If so, I suspect its because we drive the tcp_hpts_softclock() routine from userret(), in order to avoid tons of timer interrupts and context switches. To test this theory, you could apply a patch like: It's affecting overall system performance, bonnie was just a way to get some numbers to compare. Tomorrow I will test patch. Thanks! -- Nuno Teixeira FreeBSD Committer (ports)