Bug 840270
Summary: | qperf: the codes allow mtu_size to be 4K but failed when it came to practice | ||
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Product: | Red Hat Enterprise Linux 5 | Reporter: | hali |
Component: | qperf | Assignee: | Doug Ledford <dledford> |
Status: | CLOSED NOTABUG | QA Contact: | Infiniband QE <infiniband-qe> |
Severity: | medium | Docs Contact: | |
Priority: | unspecified | ||
Version: | 5.9 | CC: | dledford, kzhang |
Target Milestone: | rc | ||
Target Release: | --- | ||
Hardware: | All | ||
OS: | Linux | ||
Whiteboard: | |||
Fixed In Version: | Doc Type: | Bug Fix | |
Doc Text: | Story Points: | --- | |
Clone Of: | 840269 | Environment: | |
Last Closed: | 2012-08-13 14:39:03 UTC | Type: | Bug |
Regression: | --- | Mount Type: | --- |
Documentation: | --- | CRM: | |
Verified Versions: | Category: | --- | |
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
Cloudforms Team: | --- | Target Upstream Version: | |
Embargoed: | |||
Bug Depends On: | 840269 | ||
Bug Blocks: |
Description
hali
2012-07-15 08:46:17 UTC
This request was evaluated by Red Hat Product Management for inclusion in a Red Hat Enterprise Linux release. Product Management has requested further review of this request by Red Hat Engineering, for potential inclusion in a Red Hat Enterprise Linux release for currently deployed products. This request is not yet committed for inclusion in a release. This is not a bug. qperf supports 4k MTUs just fine, however the MTU on the given device is limited to whatever the device and switch are set to. So, even though qperf supports a 4k MTU, the 4k MTU can only be used if the physical MTU of the device is also set to 4k. It is very common to have a device that is limited to a 2k MTU, and in that case qperf can only go up to using a 2k MTU. |