lavinog:
I like to report kernel issues in my spare time and have manually turned the
kerneloops service on. You will see that many other services are missing from
the bootchart as I have manually turned them off. As it happens I don´t think I
was running the latest updates but the updates that have been released are
irrelevant to this issue...
Scott:
As I tried to state in comment #17, such cheap/1st gen SSDs will be misreported
as being rotational: i.e. /sys/block/sda/queue/rotational is 1 on an out of the
box install on an EeePC 900 16G SSD. If this were not the case I would not need
to manually add the udev rules given in comment #15 to workaround this issue.
My concerns are twofold:
1. Some SSDs don´t report they are non-rotational. This leads ureadahead to use
a mode that will actually slow down boot.
2. A pack caches the fact that the disk was originally reported as rotational
so until the pack is remade the udev change is not picked up.
Is that clearer?
** Changed in: ureadahead (Ubuntu)
Status: Incomplete => New
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ureadahead slows down boot on cheap SSDs (e.g. EeePC 900 SSD)
https://bugs.launchpad.net/bugs/577763
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