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Tilman Hausherr commented on PDFBOX-4060: ----------------------------------------- No regressions. It takes about 20sec on my old PC. I'm positively surprised about the full cache. I had decided against that (without ever testing) because I was afraid of it getting huge. > Slow rendering of PDF file with DeviceN jpeg file > ------------------------------------------------- > > Key: PDFBOX-4060 > URL: https://issues.apache.org/jira/browse/PDFBOX-4060 > Project: PDFBox > Issue Type: Bug > Components: Rendering > Affects Versions: 2.0.5, 2.0.8 > Reporter: Tilman Hausherr > Assignee: Andreas Lehmkühler > Priority: Major > Labels: DeviceN > Attachments: PDFBOX-4060-Patch.txt, PDFBOX-4060-veryslow.pdf > > > (File submitted by Soon Keong Tan on the user mailing list) > There is a large jpeg file (5349 x 3806) that uses a DeviceN colorspace which > in turn is based on CMYK. There's some slowness due to the type0 convert > function from DeviceN to CMYK, but this is less than 10%. Most time is from > converting the CMYK to RGB, one pixel at a time. (Because of the DeviceN > colorspace we can't use bulk conversion, which may or may not be faster) > jdk: 1.7.0_72 > benchmarks: > (1) 1.8.13 - 1.5 mins > (2) 2.0.5 - 6.18 mins > (3) 2.0.8 - 6.35 mins -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@pdfbox.apache.org For additional commands, e-mail: dev-h...@pdfbox.apache.org