Details
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Bug
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Resolution: Won't Do
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P3: Somewhat important
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None
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unversioned
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None
Description
During the last 90 days, of those VMs that report syslogs to elasticsearch, we've found 2 occurances of:
TCP: ens192: Driver has suspect GRO implementation, TCP performance may be compromised.
Some investigations were done on qtinfluxdb01:
qtadmin@qtinfluxdb01:~$ ip a 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: ens192: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 link/ether 00:50:56:99:b0:63 brd ff:ff:ff:ff:ff:ff inet 10.150.153.71/24 brd 10.150.153.255 scope global ens192 valid_lft forever preferred_lft forever inet6 fe80::250:56ff:fe99:b063/64 scope link valid_lft forever preferred_lft forever qtadmin@qtinfluxdb01:~$ ethtool -i ens192 driver: vmxnet3 version: 1.4.14.0-k-NAPI firmware-version: expansion-rom-version: bus-info: 0000:0b:00.0 supports-statistics: yes supports-test: no supports-eeprom-access: no supports-register-dump: yes supports-priv-flags: no qtadmin@qtinfluxdb01:~$ ethtool -k ens192 |grep generic-rece generic-receive-offload: on
Information about it can be found here:
https://serverfault.com/questions/909684/syslog-kernel-1241-147934-tcp-ens192-driver-has-suspect-gro-implementatio
https://groups.google.com/forum/#!topic/linux.debian.kernel/5pKGnpg688Y
And the adapter is VMXNET 3 in vSphere