On Sun, Nov 23, 2014 at 4:26 PM, James K. Lowden
jklow...@schemamania.org wrote:
Metadata updates to Posix filesystems are seen as so costly that
fsync(2) on the datafile descriptor doesn't update them. A separate
sync on the directory is required. Compared to an in-memory update
(of
On Fri, Nov 21, 2014 at 02:01:39PM -0500, Joseph Fernandes wrote:
We wanted to known the following
1) How could we improve the performance on the write side so that we have
minimal latency?
2) Will ther be any write performance hit when the number of records in the
DB increase?
Generally
My advice is to borrow from other clustered filesystems' experience.
If you want to adhere to POSIX semantics then st_mtime and st_size
visibility will be a particular headache, especially since you don't
know when it's OK to lie (i.e., which callers of stat() are using
st_mtime/st_size for
BTW, the experience with dedup is that doing things off-line means
never catching up, while doing them online means going slow.
You might cache as much as you can in memory then go slow when you
miss the cache...
In practice I think it's best to separate data and metadata devices so
that you can
Hi Everyone!
I wanted to use the user defined functions in Java language with
sqlite-jdbc-3.8.7. (On Ubuntu Linux 14.04 LTS 64bits)
I wanted to check the arguments number in my custom function. And I
thought, that I send a message for user, when he gave too many arguments in
the function.
I
- Original Message -
From: James K. Lowden jklow...@schemamania.org
To: sqlite-users@sqlite.org
Sent: Monday, November 24, 2014 3:56:14 AM
Subject: Re: [sqlite] Using Sqlite3 as a Change Time Recording Data Store in
Glusterfs
On Sat, 22 Nov 2014 23:25:16 -0500 (EST)
Joseph Fernandes
- Original Message -
From: Nico Williams n...@cryptonector.com
To: General Discussion of SQLite Database sqlite-users@sqlite.org
Sent: Monday, November 24, 2014 4:35:59 PM
Subject: Re: [sqlite] Using Sqlite3 as a Change Time Recording Data Store in
Glusterfs
On Sun, Nov 23, 2014 at
Again asking the same question :
a. Does WAL during an insert/update in the log file do any internal
search/sort
and then insert/update to the log or
b. Just appends the WAL log with the incoming insert/update entry, thus
keeping the
writes sequential and during a checkpoint (manual or
