You're quite correct, the phase in which the throughput goes very low is
open()ing all the files - there's little I've been able to do to speed
that up.
The current proposal is to drop the requirement to do that by adding a
kernel syscall that lets us populate the page cache by inode number,
rather than file handle
** Changed in: ureadahead (Ubuntu)
Status: New => Triaged
** Changed in: ureadahead (Ubuntu)
Importance: Undecided => Medium
** Summary changed:
- throughput goes very low after a first peak
+ open()ing files takes a long time with low throughput
--
open()ing files takes a long time with low throughput
https://bugs.launchpad.net/bugs/492841
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