Displaying 2 results from an estimated 2 matches for "fincore".
2011 Jan 04
16
[PATCH v2 0/5] add new ioctls to do metadata readahead in btrfs
...e and metadata read is a sync operation, which impacts the
efficiency of readahead much. The patches try to add meatadata readahead
for btrfs.
In btrfs, metadata is stored in btree_inode. Ideally, if we could hook
the inode to a fd so we could use existing syscalls (readahead, mincore
or upcoming fincore) to do readahead, but the inode is hidden, there is
no easy way for this from my understanding. So we add two ioctls for
this. One is like readahead syscall, the other is like micore/fincore
syscall.
Under a harddisk based netbook with Meego, the metadata readahead
reduced about 3.5s boot time in...
2009 Aug 10
5
Scalability plans: Abstract out filesystem and make it someone else's problem
This is something I figured out a few months ago, mainly because this
one guy at work (hi, Stu) kept telling me my multi-master replication
plan sucked and we should use some existing scalable database. (I guess
it didn't go exactly like that, but that's the result anyway.)
So, my current plan is based on a couple of observations:
* Index files are really more like memory dumps.