On Wednesday, May 22, 2024 6:58 PM, Paweł Bogusławski wrote: >W dniu 22.05.2024 o 23:52, brian m. carlson pisze: > >> On 2024-05-22 at 15:02:51, Paweł Bogusławski wrote: >>> Started to clone big git repo on not-too-fast, _stable_ VDSL link (up >>> to 20mbps down)... >>> >>> $ git clone https://github.com/googleapis/google-api-go-client >>> Cloning into 'google-api-go-client'... >>> remote: Enumerating objects: 644446, done. >>> remote: Counting objects: 100% (6922/6922), done. >>> remote: Compressing objects: 100% (2904/2904), done. >>> Receiving objects: 0% (3859/644446), 20.82 MiB | 1.01 MiB/s >>> >>> ...and then started to watch a VOD movie on same link; when VOD >>> buffers data, eats almost all available down bandwidth and leaves >>> only about 100 kB/s for git... >>> >>> Receiving objects: 1% (7111/644446), 44.49 MiB | 130.00 KiB/s >>> >>> ...and when VOD stops buffering and whole bandwith is available for >>> git again, git transfer starts to grow... >>> >>> Receiving objects: 1% (7660/644446), 50.56 MiB | 575.00 KiB/s >>> >>> ...but finally git throws an error >>> >>> error: 181 bytes of body are still expected5 MiB | 1015.00 KiB/s >>> fetch-pack: unexpected disconnect while reading sideband packet >>> fatal: early EOF >>> fatal: index-pack failed >>> >>> or sometimes: >>> >>> error: RPC failed; curl 92 HTTP/2 stream 5 was not closed cleanly: >>> CANCEL (err 8) >>> error: 6109 bytes of body are still expected >>> fetch-pack: unexpected disconnect while reading sideband packet >>> fatal: early EOF >>> fatal: fetch-pack: invalid index-pack output >>> >>> No such problems when downloading bigger file (i.e. linux kernel >>> source) with wget or curl instead of git clone (wget/curl transfer >>> drops to about >>> 100 kB/s when VOD buffers and increases to full speed when VOD is not >>> transferring and transfer finishes successfully). >>> >>> Sounds like a bug in git; should not throw an error on available >>> download bandwidth changes as wget and curl do and should not require >>> any params tuning (to stop users flooding bugtrackers). >> I don't believe this is a bug in Git. The problem here is a network >> issue of some sort that's causing the connection to be interrupted or >> dropped. This is very common, but the possible causes are many. >> >> A lot of times we see this it's some sort of proxy, and that can be a >> non-default antivirus or firewall or TLS MITM device, but that's >> usually on Windows, and you're using Debian. It can also be just a >> bad connection, poor traffic management by your ISP, or a flaky >> wireless or wired network card. >> >> My _guess_ about what's happening here is poor traffic management: >> because video is typically flagged as low-latency in DSCP, some device >> on the path is prioritizing it to the exclusion of all other traffic, >> which is causing the Git connection to be dropped. I have no proof of >> this, though. > >Try to run > >git clone https://github.com/googleapis/google-api-go-client > >and limit interface speed somehow i.e. > >tc qdisc add dev eth0 root handle 1: htb default 12 tc class add dev eth0 parent 1:1 >classid 1:12 htb rate 20kbps ceil 20kbps tc qdisc add dev eth0 parent 1:12 netem >delay 1000ms > >and after a while restore speed with i.e. > >tc qdisc del dev eth0 parent 1:12 netem delay 1000ms > >I tried this in Debian 11 and git 2.30.2 died with: > >error: 5723 bytes of body are still expected MiB | 920.00 KiB/s >fetch-pack: unexpected disconnect while reading sideband packet >fatal: early EOF >fatal: index-pack failed I have tried this from my home ISP. It does a little throttling but sustained between 5-6 MiB/s for most of the transfer. We have seen related issues around ISP throttling that causes connections to drop for very large repositories. However, in the test I just ran, both git and https are happy to complete. $ git clone https://github.com/googleapis/google-api-go-client Cloning into 'google-api-go-client'... remote: Enumerating objects: 644446, done. remote: Counting objects: 100% (6922/6922), done. remote: Compressing objects: 100% (2904/2904), done. remote: Total 644446 (delta 3722), reused 6567 (delta 3445), pack-reused 637524 Receiving objects: 100% (644446/644446), 1.46 GiB | 7.45 MiB/s, done. Resolving deltas: 100% (392971/392971), done. Updating files: 100% (1372/1372), done. $ git version git version 2.43.0 Have you tried using SSH to do the clone? Assuming you have your public key registered on GitHub: git clone ssh://git@xxxxxxxxxx/googleapis/google-api-go-client This runs about slightly slower. $ git clone ssh://git@xxxxxxxxxx/googleapis/google-api-go-client Cloning into 'google-api-go-client'... remote: Enumerating objects: 644446, done. remote: Counting objects: 100% (6922/6922), done. remote: Compressing objects: 100% (2911/2911), done. remote: Total 644446 (delta 3720), reused 6563 (delta 3438), pack-reused 637524 Receiving objects: 100% (644446/644446), 1.46 GiB | 6.31 MiB/s, done. Resolving deltas: 100% (392969/392969), done. Updating files: 100% (1372/1372), done.
