Hi all,
These are new releases of dm-ioband and blkio-cgroup. The major change
of these releases is that a hierarchical configuration is supported,
a parent cgroup's bandwidth is distributed to its children. The
hierarchical configuration is available when using dm-ioband and
blkio-cgroup together. Please refer to the documentation included in
this series of patches on how to use it.
The summary of the changes are below:
dm-ioband v1.13.0
- Introduce a hierarchical grouping mechanism for blkio-cgroup.
- Change the dmsetup status outputs to be similar to
/proc/diskstats and /sys/block/dev/stat files.
blkio-cgroup v12
- dm-ioband can be configured in a hierarchical manner through the
cgroup interface.
- blkio.stat file is added which shows IO statistics per cgroup.
TODO
- Borrowing and lending bandwidth between a parent and children if
spare bandwidth is available in them.
These patches can be applied to kernel 2.6.31
The list of the patches:
[PATCH 1/9] I/O bandwidth controller and BIO tracking
[PATCH 2/9] dm-ioband-1.13.0: All-in-one patch
[PATCH 3/9] blkio-cgroup-v12: The new page_cgroup framework
[PATCH 4/9] blkio-cgroup-v12: Refactoring io-context initialization
[PATCH 5/9] blkio-cgroup-v12: The body of blkio-cgroup
[PATCH 6/9] blkio-cgroup-v12: Page tracking hooks
[PATCH 7/9] blkio-cgroup-v12: The document of blkio-cgroup
[PATCH 8/9] blkio-cgroup-v12: Add a cgroup support to dm-ioband
[PATCH 9/9] blkio-cgroup-v12: The document of a cgroup support for dm-ioband
About dm-ioband
dm-ioband is an I/O bandwidth controller implemented as a
device-mapper driver and can control bandwidth on per partition, per
user, per process, per virtual machine (such as KVM or Xen) basis.
About blkio-cgruop
blkio-cgroup is a block I/O tracking mechanism implemented on the
cgroup memory subsystem. Using this feature the owners of any type
of I/O can be determined. This allows dm-ioband to control block I/O
bandwidth even when it is accepting delayed write requests.
dm-ioband can find the cgroup of each request. It is also for
possible that others working on I/O bandwidth throttling to use this
functionality to control asynchronous I/O with a little enhancement.
Please visit our website, the patches and more information are available.
Linux Block I/O Bandwidth Control Project
http://sourceforge.net/apps/trac/ioband/
I'd like to get some feedbacks from the list. Any comments are
appreciated.
Thanks,
Ryo Tsuruta
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