Re: [9fans] USB3 1Gb ethernet card working on 9legacy (rpi 4)
On Wed, 3 Aug 2022, Richard Miller wrote: 9legacy should always have up to date patches for the Raspberry Pi, and the 9legacy SD card image will usually be fresher than the 9pi.img.gz image in contrib/miller. The only value now in the 9pi image is for historians: I've tried to conserve the metadata so it's possible to see when source files were most recently changed. On 9legacy, patches are re-applied when a distribution image is made, so mtime information is less informative. I will also continue to maintain the Pi kernel source in contrib/miller/9/bcm, where a more complete history can be seen: Ok, thanks Richard. -- 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/T668643d11149fab4-M92fb37694c2857c72317a3f2 Delivery options: https://9fans.topicbox.com/groups/9fans/subscription
Re: [9fans] USB3 1Gb ethernet card working on 9legacy (rpi 4)
On Wed, 3 Aug 2022, Richard Miller wrote: That was a typo, is almost five times slower (~80% slower). Just to be clear, it is really worst! Unless your "small arm linux machine" is a raspberry pi, you are changing too many variables to make a meaningful comparison. Benchmarking i/o across the internet will also introduce enough variation to suggest an experimental sample size of more than one attempt. An interesting set of experiments might be to run both linux and plan 9 on the pi4, try the built-in ether adapter and the usb dongle, and try fetching both from http:// and https:// (to see how much of the variation is due to tls decode speed). Reading my mail it seems like this was something I suddenly was aware of. It is not, I've been trying to understand what is wrong for some time now. The pi4 saturates my fiber in linux, there is no problem with the hardware. But note that the linux machine is sending and receiving packages through the plan9 machine. If there was a hardware problem in the pi4 (or the usb adapter), the linux machine's connection would be affected. And yes, I have made tests with different sites. As I said before the archlinux servers usually let me saturate my bandwidth, so they have become a good target for me. The thing this setting is telling me is that the usb and ethernet drivers are working reasonably good (again, at least for my bandwidth). I don't know any reliable server with good bandwidth serving without tls, I could set an http server on the linux machine and make tests, but I modified the example at https://golangdocs.com/golang-download-files and there is no real difference between the native and go tls implementations: ; time ./gget -o /dev/null https://arch.mirror.constant.com/images/v20220801.71902/Arch-Linux-x86_64-basic-20220801.71902.qcow2 Downloaded a file /dev/null with size 513671168 2.25u 1.45s 65.51r ./gget -o /dev/null https://arch.mirror.constant.com/images/v20220801.71902/Arch-Linux-x86_64-basic-20220801.71902.qcow2 ; time hget -o /dev/null https://arch.mirror.constant.com/images/v20220801.71902/Arch-Linux-x86_64-basic-20220801.71902.qcow2 couldn't set mtime: permission denied 9.27u 35.02s 64.62r hget -o /dev/null https://arch.mirror.constant.com/images/v20220801.71902/Arch-Linux-x86_64-basic-20220801.71902.qcow2 With linux (again, through the plan9 machine) I get: $ time ./gget -o /dev/null https://arch.mirror.constant.com/images/v20220801.71902/Arch-Linux-x86_64-basic-20220801.71902.qcow2 Downloaded a file /dev/null with size 513671168 real0m48.624s user0m14.265s sys 0m21.648s So now It is only about 25% slower in plan9, so yes, the factors are variable. I found this thread in the list's archives: https://marc.info/?t=14557952507=1=2 Maybe is related. -- 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/T668643d11149fab4-Mf2898ed1a403f2159dda8d9a Delivery options: https://9fans.topicbox.com/groups/9fans/subscription
Re: [9fans] USB3 1Gb ethernet card working on 9legacy (rpi 4)
> By the way Richard, should I take the last rpi image at 9legacy as > the more recent with your work? Are you going to abandon > https://plan9.io/sources/contrib/miller/? 9legacy should always have up to date patches for the Raspberry Pi, and the 9legacy SD card image will usually be fresher than the 9pi.img.gz image in contrib/miller. The only value now in the 9pi image is for historians: I've tried to conserve the metadata so it's possible to see when source files were most recently changed. On 9legacy, patches are re-applied when a distribution image is made, so mtime information is less informative. I will also continue to maintain the Pi kernel source in contrib/miller/9/bcm, where a more complete history can be seen: term% srv -n 9p.io sources post... term% history /n/sources/contrib/miller/9/bcm/etherusb.c Aug 3 13:16:49 BST 2022 /n/sources/contrib/miller/9/bcm/etherusb.c 8872 [miller] Jul 18 13:26:35 BST 2019 /n/sourcesdump/2022/0803/contrib/miller/9/bcm/etherusb.c [miller] Apr 4 17:04:17 BST 2018 /n/sourcesdump/2019/0718/contrib/miller/9/bcm/etherusb.c 8837 [bootes] Mar 4 21:18:17 GMT 2016 /n/sourcesdump/2018/0404/contrib/miller/9/bcm/etherusb.c 7878 [bootes] Jul 2 09:00:28 BST 2015 /n/sourcesdump/2016/0304/contrib/miller/9/bcm/etherusb.c 7838 [bootes] -- 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/T668643d11149fab4-M67bb6396df945caf4d9c54df Delivery options: https://9fans.topicbox.com/groups/9fans/subscription
Re: [9fans] USB3 1Gb ethernet card working on 9legacy (rpi 4)
>> See the difference? That's a little more than 19Mb/s, some 2MiB/s almost 50% >> slower. > > That was a typo, is almost five times slower (~80% slower). Just > to be clear, it is really worst! Unless your "small arm linux machine" is a raspberry pi, you are changing too many variables to make a meaningful comparison. Benchmarking i/o across the internet will also introduce enough variation to suggest an experimental sample size of more than one attempt. An interesting set of experiments might be to run both linux and plan 9 on the pi4, try the built-in ether adapter and the usb dongle, and try fetching both from http:// and https:// (to see how much of the variation is due to tls decode speed). -- 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/T668643d11149fab4-M421b620beeed0f3199881e28 Delivery options: https://9fans.topicbox.com/groups/9fans/subscription
