hi filipus, how about you bring this up on pkg-php for discussion?
sean
On Tue, Mar 16, 2010 at 09:51:27PM -0400, Filipus Klutiero wrote:
> Hi Sean and others,
> I'm back from Confoo 2010 and was able to get up early enough to see the last
> 15 minutes of Rasmus Lerdorf's talk on PHP performance. He was comparing
> HipHop PHP's performance with PHP's and had an initially slower result with
> HipHop. He profiled the HipHop version and after a few changes, it was still
> significantly slower than the PHP version. He found that a date or time
> function was taking about 15-20% of the execution time due to system calls
> querying the timezone. A simple date_default_timezone_set made the HipHop
> version take the lead.
>
> Now, I don't know what was the script and whether it used time/date functions
> a lot, but it looked like running without date_timezone, TZ and without
> calling date_default_timezone_set could have a significant performance hit if
> PHP doesn't cache the timezone. Caching the timezone for a minute or so would
> seem reasonable if it's not already done. I suppose the timezone is never
> changed on most Debian installs.
>
> I leave it to your discretion to determine whether this deserves
> investigation. Unfortunately, the slides aren't available, I can only suggest
> you ask Rasmus if you want more context.
>
> Thanks for the quick treatment of this bug,
> Filipus
>
> Le mars 13, 2010 06:51:14 PM, Debian Bug Tracking System a écrit :
> > This is an automatic notification regarding your Bug report
> > which was filed against the php5 package:
> >
> > #571762: [php5] please get rid of "Warning: date() [function.date]: It is
> > not safe to rely on the system's timezone settings."
> >
> > It has been closed by Raphael Geissert <[email protected]>.
> >
> > Their explanation is attached below along with your original report.
> > If this explanation is unsatisfactory and you have not received a
> > better one in a separate message then please contact Raphael Geissert
> > <[email protected]> by
> > replying to this email.
>
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