Re: [RFC 1/1] GPRS Provisioning Plugin.

[Denis Kenzior <denkenz@gmail.com>]

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Hi Oleg,

On 07/13/2011 05:41 AM, Oleg Zhurakivskyy wrote:
> Hello Denis,
> 
> On 07/08/2011 09:23 PM, Denis Kenzior wrote:
>> What I wonder is what is the overhead of the XML parser right now (e.g.
>> how long it takes on reasonable embedded hardware).  If this takes a
>> while, then it might be better to pre-parse the mobile-provider-info db
>> during plugin initialization and not every time gprs_provision is
>> called.  Otherwise we run the risk of hanging the daemon while the
>> provision settings are being looked up.
> 
> I have tested on N900 (MeeGo 1.2 Community Edition on microSDHC class 4
> card), it takes 0.1 second to load and parse the mobile-provider-info
> database (154KB).
> 
> Is this a reasonable time or should we go with pre-parsing?

My rule of thumb is less than 300 ms is not really noticeable to the
user and anything up to 1 second is OK.  So in this case I'd say we
should be fine parsing on demand.

If we ever encounter performance problems we can revisit this decision.

Regards,
-Denis