** 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
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https://bugs.launchpad.net/bugs/1803613
Title:
Improve AWS hibernation performance
Status in linux-aws package in Ubuntu:
Triaged
Status in linux-aws source package in Xenial:
Fix Committed
Status in linux-aws source package in Bionic:
Fix Committed
Status in linux-aws source package in Cosmic:
Fix Committed
Status in linux-aws source package in Disco:
Triaged
Bug description:
From: Aleksei Besogonov <[email protected]>
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%.
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