AWARE SYSTEMS
TIFF and LibTiff Mail List Archive

Thread

2019.10.01 18:01 "[Tiff] TIFF_IO_MAX too large for Windows XP", by David C. Partridge
2019.10.01 19:10 "Re: [Tiff] TIFF_IO_MAX too large for Windows XP", by Bob Friesenhahn
2019.11.03 18:13 "[Tiff] libtiff, breaking with release traditions", by Bob Friesenhahn
2019.11.03 22:52 "[Tiff] Libtiff 4.1.0 is released", by Bob Friesenhahn
2019.10.01 19:37 "Re: [Tiff] TIFF_IO_MAX too large for Windows XP", by Roger Leigh
2019.10.01 21:42 "Re: [Tiff] TIFF_IO_MAX too large for Windows XP", by Bob Friesenhahn
2019.10.01 21:57 "Re: [Tiff] TIFF_IO_MAX too large for Windows XP", by Olivier Paquet
2019.10.02 02:39 "Re: [Tiff] TIFF_IO_MAX too large for Windows XP", by David C. Partridge
2019.10.10 12:10 "Re: [Tiff] TIFF_IO_MAX too large for Windows XP", by David C. Partridge
2019.10.10 12:14 "Re: [Tiff] TIFF_IO_MAX too large for Windows XP", by Edward Lam
2019.10.10 12:38 "Re: [Tiff] TIFF_IO_MAX too large for Windows XP", by Olivier Paquet
2019.10.10 14:21 "Re: [Tiff] TIFF_IO_MAX too large for Windows XP", by David C. Partridge
2019.10.10 14:28 "Re: [Tiff] TIFF_IO_MAX too large for Windows XP", by David C. Partridge
2019.10.10 18:41 "Re: [Tiff] TIFF_IO_MAX too large for Windows XP", by Roger Leigh
2019.10.10 19:11 "Re: [Tiff] TIFF_IO_MAX too large for Windows XP", by Even Rouault
2019.10.10 19:40 "Re: [Tiff] TIFF_IO_MAX too large for Windows XP", by Bob Friesenhahn
2019.10.10 22:24 "Re: [Tiff] TIFF_IO_MAX too large for Windows XP", by David C. Partridge
2019.10.10 22:42 "Re: [Tiff] TIFF_IO_MAX too large for Windows XP", by Scott Ribe
2019.10.10 14:23 "Re: [Tiff] TIFF_IO_MAX too large for Windows XP", by David C. Partridge
2019.10.10 12:25 "Re: [Tiff] TIFF_IO_MAX too large for Windows XP", by Scott Ribe
2019.10.10 14:22 "Re: [Tiff] TIFF_IO_MAX too large for Windows XP", by David C. Partridge
2019.10.11 02:55 "Re: [Tiff] TIFF_IO_MAX too large for Windows XP", by Edward Lam
2019.10.02 12:29 "Re: [Tiff] TIFF_IO_MAX too large for Windows XP", by Edward Lam
2019.10.02 13:14 "Re: [Tiff] TIFF_IO_MAX too large for Windows XP", by David C. Partridge
2019.10.02 13:29 "Re: [Tiff] TIFF_IO_MAX too large for Windows XP", by Bob Friesenhahn
2019.10.10 10:28 "Re: [Tiff] TIFF_IO_MAX too large for Windows XP", by David C. Partridge
2019.10.10 11:28 "Re: [Tiff] TIFF_IO_MAX too large for Windows XP", by Edward Lam
2019.10.02 13:18 "Re: [Tiff] TIFF_IO_MAX too large for Windows XP", by Bob Friesenhahn

2019.10.10 22:42 "Re: [Tiff] TIFF_IO_MAX too large for Windows XP", by Scott Ribe

> On Oct 10, 2019, at 4:24 PM, David C. Partridge <david.partridge@perdrix.co.uk> wrote:

Given that the actual limit in XP (for network shares) appears to be a bit under 64MB or bit under 32MB (for x64), I really see no harm in reducing it to 16MB, 1MB or even 64K!! My experience has been that reading files using ever increasing buffers has diminishing returns that typically tail off after 64KB, and beyond 1MB there's little or no benefit in increasing the chunk size, however if you want to go bigger, by all means set the limit to 16MB.

Exactly that. I once, with an old version of Windows NT, saw performance gains all the way up to 2MB, but only once--and that was a screwy system, where at smaller sizes it was unreasonably slow. Other than that, never above 256KB. Unless someone has specific evidence that 32MB is better than 16MB to contradict all that experience, then it's just not needed and completely reasonable to drop to 16MB.