From mboxrd@z Thu Jan 1 00:00:00 1970 From: erik quanstrom Date: Tue, 23 Feb 2016 09:38:10 -0800 To: 9fans@9fans.net Message-ID: In-Reply-To: References: <0fae2f7ad3be7bc68e270f67be6c3392@lilly.quanstro.net> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Subject: Re: [9fans] rtl8169 gbe slow Topicbox-Message-UUID: 893b4384-ead9-11e9-9d60-3106f5b1d025 On Tue Feb 23 09:25:53 PST 2016, 23hiro@gmail.com wrote: > in the long run the rwin seems much higher (65535) than the number of > bytes in flight (less than 3x1500 bytes). > > i just noticed that the minimum latency numbers seem way low. many > latency samples appear at around 40ms and 100ms, but there's also > outliers? below 1ms. i don't get how this pcap got produced. perhaps > wireshark is also interpreting it wrong, or timestamps are broken... > > 26/status:Established qin 0 qout 0 rq 0.0 srtt 1256 mdev 628 sst 65535 cwin > > 4517 swin 5808>>0 rwin 65535>>4 qscale 0 timer.start 10 timer.count 10 > > rerecv 0 katimer.start 2400 katimer.count 2400 > > where did you run this? machine on the us west coast. clearly we are prevoking some sort of odd behavior in this machine, but it's not clear to me what we're doing. the only clue we have is the out-of-window rxes. perhaps the sender is scaling. - erik