有关加快GhostScript速度的任何提示? [英] Any tips for speeding up GhostScript?

问题描述

我有100页的PDF，大约50 MB.我正在针对它运行下面的脚本，每页大约需要23秒. PDF是纸质文档的扫描.

gswin32.exe -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -dCompatibilityLevel=1.3 
            -dPDFSETTINGS=/screen -sOutputFile=out4.pdf 09.pdf

我有什么办法可以加快速度吗?我已经确定-dPDFSettings=/screen是使它变得如此缓慢的原因，但是如果没有它，我将无法获得良好的压缩...

更新: 好的，我尝试将其更新为以下内容.我是否正确使用-c 30000000 setvmthreshold部分?

gswin32.exe -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -dCompatibilityLevel=1.3 
            -dPDFSETTINGS=/screen -dNumRenderingThreads=2 -sOutputFile=out7.pdf 
            -c 30000000 setvmthreshold -f 09.pdf

解决方案

如果您使用的是多核系统，请使用以下多个CPU核:

-dNumRenderingThreads=<number of cpus>

让它使用多达30mb的RAM:

-c "30000000 setvmthreshold"

尝试禁用垃圾收集器:

-dNOGC

更多详细信息，请参阅Ghoscript文档中的 Improving Performance 部分. /p>

I have a 100 page PDF that is about 50 MBs. I am running the script below against it and it's taking about 23 seconds per page. The PDF is a scan of a paper document.

gswin32.exe -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -dCompatibilityLevel=1.3 
            -dPDFSETTINGS=/screen -sOutputFile=out4.pdf 09.pdf

Is there anything I can do to speed this up? I've determined that the -dPDFSettings=/screen is what is making it so slow, but i'm not getting good compression without it...

UPDATE: OK I tried updating it to what I have below. Am i using the -c 30000000 setvmthreshold portion correctly?

gswin32.exe -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -dCompatibilityLevel=1.3 
            -dPDFSETTINGS=/screen -dNumRenderingThreads=2 -sOutputFile=out7.pdf 
            -c 30000000 setvmthreshold -f 09.pdf

解决方案

If you are on a multicore system, make it use multiple CPU cores with:

-dNumRenderingThreads=<number of cpus>

Let it use up to 30mb of RAM:

-c "30000000 setvmthreshold"

Try disabling the garbage collector:

-dNOGC

Fore more details, see Improving Performance section from Ghoscript docs.

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