Hello Experts:
We are compiling our own amalgamation into our multi-threaded iOS app.
Just saw a busy error where one thread is in sqlite doing an fsync()
(unix_sync(), full_fsync()) and the the thread that gets the error is trying to
start a transaction.
So it looks like fsync() is taking
On Thu, Jan 16, 2014 at 2:43 PM, Ward Willats sqlite-us...@wardco.comwrote:
Hello Experts:
We are compiling our own amalgamation into our multi-threaded iOS app.
Just saw a busy error where one thread is in sqlite doing an fsync()
(unix_sync(), full_fsync()) and the the thread that gets the
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On 16/01/14 11:43, Ward Willats wrote:
So it looks like fsync() is taking more than the 5 second timeout I've
set.
This is not uncommon on mobile devices using flash based storage. There
is a lot of volatility in read and write performance.
I
On Jan 16, 2014, at 12:02 PM, Richard Hipp d...@sqlite.org wrote:
Do not compile with SQLITE_NO_SYNC.
Okay. Thanks.
On Jan 16, 2014, at 1:29 PM, Roger Binns rog...@rogerbinns.com wrote:
On 16/01/14 11:43, Ward Willats wrote:
So it looks like fsync() is taking more than the 5 second
FYI:
If you use PRAGMA journal_mode=WAL; with PRAGMA synchronous=NORMAL;,
then fsync()s will only occur during a checkpoint operation. And, you can
turn off automatic checkpointing and run checkpoints from a separate thread
or process, and let that separate thread or process take the fsync()
On Jan 16, 2014, at 1:50 PM, Richard Hipp d...@sqlite.org wrote:
FYI:
If you use PRAGMA journal_mode=WAL; with PRAGMA synchronous=NORMAL;,
then fsync()s will only occur during a checkpoint operation. And, you can
turn off automatic checkpointing and run checkpoints from a separate thread
On Jan 16, 2014, at 1:50 PM, Richard Hipp d...@sqlite.org wrote:
FYI:
If you use PRAGMA journal_mode=WAL; with PRAGMA synchronous=NORMAL;,
then fsync()s will only occur during a checkpoint operation. And, you can
turn off automatic checkpointing and run checkpoints from a separate thread
