Feature Requests item #2020244, was opened at 2008-07-17 06:54
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Category: None
Group: None
Status: Open
Priority: 5
Private: No
Submitted By: Egon Willighagen (egonw)
Assigned to: Nobody/Anonymous (nobody)
Summary: Test if static String[] help performance and memory
Initial Comment:
>
> On Thu, Jul 17, 2008 at 6:24 AM, Rajarshi Guha <
rguha@...> wrote:
>
>> On Jul 17, 2008, at 12:19 AM, Egon Willighagen wrote:
>>
>>> On Thu, Jul 17, 2008 at 5:13 AM, <
rajarshi@...> wrote:
>>>
>>>> + public String[] getDescriptorNames() {
>>>> + return new String[]{
>>>> + "PPSA-1", "PPSA-2", "PPSA-3",
>>>> + "PNSA-1", "PNSA-2", "PNSA-3",
>>>> + "DPSA-1", "DPSA-2", "DPSA-3",
>>>> + "FPSA-1", "FPSA-2", "FPSA-3",
>>>> + "FNSA-1", "FNSA-2", "FNSA-3",
>>>> + "WPSA-1", "WPSA-2", "WPSA-3",
>>>> + "WNSA-1", "WNSA-2", "WNSA-3",
>>>> + "RPCG", "RNCG", "RPCS", "RNCS",
>>>> + "THSA", "TPSA", "RHSA", "RPSA"
>>>> + };
>>>> + }
>>>>
>>> I was wondering if the code performance would increase if such static
>>> labels String[] was made a private final static instead of creating a
>>> new String[] each time...
>>>
>> Possibly - but I'd think other aspects (such as surface area calculation)
>> will overshadow that performance hit. Also, it would only be applicable to
>> descriptors with fixed-length values (i.e., not dependent on params)
>>
> True, but for memory allocation it would do much good, not? If this
> array gets allocated once for each molecule, I can imagine that it
> will put some stress on the garbage collection in a HTVS setting, not?
>
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