Improve AWS hibernation performance
Bug #1803613 reported by
Kamal Mostafa
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux-aws (Ubuntu) |
Fix Released
|
Undecided
|
Kamal Mostafa | ||
Trusty |
Fix Released
|
Undecided
|
Kamal Mostafa | ||
Xenial |
Fix Released
|
Undecided
|
Kamal Mostafa | ||
Bionic |
Fix Released
|
Undecided
|
Kamal Mostafa | ||
Cosmic |
Fix Released
|
Undecided
|
Kamal Mostafa | ||
Disco |
Fix Released
|
Undecided
|
Kamal Mostafa |
Bug Description
From: Aleksei Besogonov <email address hidden>
PM / hibernate: Speed up hibernation by batching requests
Hibernate file reading and writing submits individual IO requests for
each page of the data. This normally is not a big issue, however some
cloud computing providers meter IO by the number of requests and not by
their size. So one 4KB request counts as much as a 256KB request
towards the IOPS quota.
With this patch we opportunistically batch the requests together,
increasing performance by 20-30%.
CVE References
tags: | added: patch |
Changed in linux-aws (Ubuntu Xenial): | |
status: | In Progress → Fix Committed |
Changed in linux-aws (Ubuntu Bionic): | |
status: | In Progress → Fix Committed |
Changed in linux-aws (Ubuntu Cosmic): | |
status: | In Progress → Fix Committed |
Changed in linux-aws (Ubuntu Trusty): | |
status: | New → Fix Committed |
assignee: | nobody → Kamal Mostafa (kamalmostafa) |
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Attached patch for bionc and its ports to cosmic and xenial have been smoke-tested to work as advertised.