Boot speedup with readahead

Karel Zak kzak at
Mon Oct 6 07:46:43 UTC 2008

On Thu, Oct 02, 2008 at 05:20:56PM +0530, Rahul Sundaram wrote:
> Pádraig Brady wrote:
>> Arjan van de Ven wrote:
>>> for those who are going to the plumbers conference... Auke Kok and I
>>> will present there on how to make a Fedora based system boot in 5
>>> seconds...
>>> and yes a form of readahead was needed to achieve that ;-)
>> There is some public info on this now:
> You are late. Check

 Well, on first glance the package is not ready for real distribution
 (for example see how filelist.c checks argv[1]...).

 I have a few questions,

  * sreadahead depends on Arjan's EXT3_IOC_INODE_JIFFIES ioctl, does
    Fedora kernel support this ioctl?

  * what generates the list of files?

  * shouldn't be better to add EXT3_IOC_INODE_JIFFIES support to
    standard Fedora readahead?


 Karel Zak  <kzak at>

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