> On Feb 4, 2020, at 1:32 AM, jaehoon jeong <[email protected]> wrote:
>
> Thank you for your reply.
>
> I can use about 4g of memory. But I have to handle multiple requests.
Memory is remarkably inexpensive compared to your time and your sanity
> For example, if three requests come in at the same time, an out of memory
> error occurs.
>
> One request takes about 30 seconds.
>
Are you automatically generating 600slides per online request. Is the slideshow
a report?
> Saving each of the 100 slides and then merging them also uses a lot of memory.
>
> Can xerces merge individual pptx files without consuming too much memory?
Xerces is an XML tool. Perhaps you can stream edit a template to generate the
final show.
>> On 2020/02/04 02:30:43, Rob Sargent <[email protected]> wrote:
>>
>>
>>> On 2/3/20 7:20 PM, jaehoon jeong wrote:
>>> Thank you for your reply.
>>>
>>> I am using oracle jdk1.8. But I do not want to increase heap memory.
>>> I want to find a solution in another way.
>> How little memory must this fit in?
>>>
>>> What does "chpaters" you mean?
>>> For example, does it mean to divide into 100 slides and save each file?
>>>
>>> I do not want to save as multiple files.
>>> I want to save all slides in one file.
>>>
>>> For example, I'm considering flushing slides to a file every 100 slides
>>> created.
>>> Is this possible using the poi library?
>> How far in to 600 do you get?
>> I'm not sure but to save each hundred slides would be to write a new
>> workbook. You would then have to merge those into a single workbook via
>> poi unless you are prepared to merge the underlying xml files? That
>> approach would certainly be more memory efficient but more a xerces
>> problem than a poi problem.
>>>
>>> On 2020/02/03 14:56:13, Rob Sargent <[email protected]> wrote:
>>>> Since no one really wants to sit through 600 slides, break the total up in
>>>> “chapters” and see where that gets you?
>>>>
>>>> How much memory does you machine have, which version of java are you using.
>>>>
>>>>> On Feb 3, 2020, at 7:15 AM, jaehoon jeong <[email protected]> wrote:
>>>>>
>>>>> Hello
>>>>>
>>>>> I'm trying to generate a pptx file using the poi library.
>>>>> The XMLSlideShow class contains about 600 XSLFSlides.
>>>>> Each XSLFSlide object uses about 3mb of memory. 1.8gb of memory is
>>>>> required to create one pptx file.
>>>>>
>>>>> It uses out too much memory, causing an out of memory error.
>>>>> And I can't increase the heap memory size.
>>>>>
>>>>> Is there a way to save slides in multiple times in one pptx file?
>>>>> Is there a way to reduce memory usage?
>>>>>
>>>>> Thanks in advance.
>>>>>
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