Bug 217088
Summary: | Poor performance of unaligned partitions, lots on reads on write | ||
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Product: | [Fedora] Fedora | Reporter: | Henrik Nordstrom <hno> |
Component: | kernel | Assignee: | Kernel Maintainer List <kernel-maint> |
Status: | CLOSED NOTABUG | QA Contact: | Brian Brock <bbrock> |
Severity: | medium | Docs Contact: | |
Priority: | medium | ||
Version: | 6 | CC: | wtogami |
Target Milestone: | --- | ||
Target Release: | --- | ||
Hardware: | x86_64 | ||
OS: | Linux | ||
Whiteboard: | |||
Fixed In Version: | Doc Type: | Bug Fix | |
Doc Text: | Story Points: | --- | |
Clone Of: | Environment: | ||
Last Closed: | 2006-12-10 00:15:39 UTC | Type: | --- |
Regression: | --- | Mount Type: | --- |
Documentation: | --- | CRM: | |
Verified Versions: | Category: | --- | |
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
Cloudforms Team: | --- | Target Upstream Version: | |
Embargoed: |
Description
Henrik Nordstrom
2006-11-23 23:23:00 UTC
Found what it is. For some reason the block size for those devices gets set to 1KB instead of the expected 512bytes. As result a dd with default block size to the device is real slow as every second write (first half of the 1KB blocks) needs to read in the block to be modified.. |