Re: [Jmol-users] Best browser for JSmol: Chrome or Safari (Firefox 2nd)

[Robert H. <ha...@st...>]

Thanks for that thorough testing. Can I copy that to the Jmol Wiki?


On Sat, Apr 19, 2014 at 1:41 PM, Eric Martz <em...@mi...>wrote:

>  I have been testing JSmol in various browsers, using FirstGlance in Jmol.
> Most tests were done in JSmol 14.0.4 but key Firefox findings replicated in
> 14.0.14.
>
> *Internet Explorer* is much, much slower than any other browser tested.
> It is unacceptably slow for JSmol.
>
> *Safari* is as almost good as the best browser for JSmol: Chrome (see
> below).
>
> The conclusions below apply to both Mac OS 10.9.2 (Mavericks), and Windows
> 7.
>
> *Opera*: rotation is several-fold slower than in Chrome or Firefox.
> Rotation is so slow that I deem Opera unacceptable for JSmol.
>
> FirstGlance has very long legacy Jmol scripts some of which go back to
> Jmol 10 in 2006. I have not optimized these yet because with the Java
> applet, performance was no problem.
>
> *Firefox* is quite good with JSmol. However in Firefox, with certain PDB
> files, after the molecule displays in FirstGlance, certain operations take *more
> than one minute* -- an unacceptable delay. During these long delays, the
> CPU is running all out. I have not yet identified what script elements are
> involved. However, it is not a matter of PDB file size. The long delays
> have been observed in 4 cases (7ahl, 4nd8, 3csn, 4izn) out of 8 files
> tested with similar or larger sizes. Those problem files have 14,000 -
> 23,000 atoms. Yet performance with 1g3i and 3j36 (with 45,000 and 60,000
> atoms respectively) is quite acceptable (longest delays for post-display
> steps were 18 sec.).
>
> *Chrome* gives the best overall performance with JSmol. The longest
> post-display step delay with the problem PDB files is only 16 sec in
> Chrome.
>
> Spinning frames/sec is slightly worse in Chrome than in Firefox, but not a
> significant problem. In OS X in Chrome, spinning is "uneven" (lags, then
> speeds up, in cycles) but in Windows, it is smooth. These seem relatively
> minor issues.
>
> Eric
>
>
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-- 
Robert M. Hanson
Larson-Anderson Professor of Chemistry
St. Olaf College
Northfield, MN
http://www.stolaf.edu/people/hansonr


If nature does not answer first what we want,
it is better to take what answer we get.

-- Josiah Willard Gibbs, Lecture XXX, Monday, February 5, 1900