On Sunday 13 February 2005 02:01 pm, Can Sar wrote:
> Hi,
>
> Does anyone know if the ext3 Commit Interval can be set from Userspace
> via some application? I know how to change the kernel to do this, but I
> feel like there must be a simpler code and remember that there are some
> kernel hooks to change it, but I am not sure how.
>
Hi,
Quote from Documentation/filesystems/ext3.txt:
When mounting an ext3 filesystem, the following option are accepted:
(*) == default
...
commit=nrsec (*) Ext3 can be told to sync all its data and metadata
every 'nrsec' seconds. The default value is 5 seconds.
This means that if you lose your power, you will lose,
as much, the latest 5 seconds of work (your filesystem
will not be damaged though, thanks to journaling).This
default value (or any low value) will hurtperformance,
but it's good for data-safety. Setting it to 0 will
have the same effect than leaving the default 5 sec.
Setting it to very large values will improve
performance.
tavi
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