We ran into the exact same issue with pg_dump after upgrading to Bionic (4.15.0-1023-aws kernel) on r5.xlarge (a next-gen Nitro instance). After 16-80 MB of data is received, tcpdump shows the receive window collapsing to 1 (not quite suddenly, but quickly), and it never recovers. We have engaged with AWS support on this issue, and they referred us to this bug.
Other than downgrading the kernel, has anyone discovered any other workarounds? -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-aws in Ubuntu. https://bugs.launchpad.net/bugs/1796469 Title: aws s3 cp --recursive hangs on the last file on a large file transfer to instance Status in linux-aws package in Ubuntu: Confirmed Bug description: aws s3 cp --recursive hangs on the last file on a large transfer to an instance I have confirmed that this works on version Linux/4.15.0-1021-aws aws cli version aws-cli/1.16.23 Python/2.7.15rc1 Linux/4.15.0-1023-aws botocore/1.12.13 Ubuntu version Description: Ubuntu 18.04.1 LTS Release: 18.04 eu-west-1 - ubuntu/images/hvm-ssd/ubuntu-bionic-18.04-amd64-server-20180912 - ami-00035f41c82244dab Package version linux-aws: Installed: 4.15.0.1023.23 Candidate: 4.15.0.1023.23 Version table: *** 4.15.0.1023.23 500 500 http://eu-west-1.ec2.archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages 500 http://security.ubuntu.com/ubuntu bionic-security/main amd64 Packages 100 /var/lib/dpkg/status 4.15.0.1007.7 500 500 http://eu-west-1.ec2.archive.ubuntu.com/ubuntu bionic/main amd64 Packages To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-aws/+bug/1796469/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
