Am 17.12.2013 um 21:05 schrieb Geert Uytterhoeven <geert@linux-m68k.org>: >> A slight increase with ioremap_fullcache() for buffered reads... well, let's see how it works with 2 BigRamPlus cards and when running a buildd... :-) > That's indeed a bit disappointing. Even for the cached reads. Google shows that > on elgar you get 12 MB/s for cached reads. Yeah. This is about the maximum you'll get out of Z3 bus. > This an A3000 with an '040 board (which one)? Do you use a memfile? > Is the kernel running in accelerator RAM, or in mainboard RAM? It's a WarpEngine 040/40. The kernel runs on accelerator RAM by using a memfile. Another challenge is now to get two BigRamPlus running... ;-) spice:/home/ij# lszorro -v 00: MacroSystems USA Warp Engine 40xx [Accelerator, SCSI Host Adapter and RAM Expansion] 40000000 (512K) 01: Unknown device 0e3b:20:00 50000000 (256M) 02: Village Tronic Picasso II/II+ RAM [Graphics Card] 00200000 (2M) 03: Village Tronic Picasso II/II+ [Graphics Card] 00e90000 (64K) 04: Hydra Systems Amiganet [Ethernet Card] 00ea0000 (64K) 05: Unknown device 0e3b:20:00 60000000 (256M) So, when I calculated correctly it should be possible to add phram by combining 2x 256M starting at 0x500...00, but: spice:/home/ij# /sbin/modprobe phram phram=bigram0,0x50000000,0x20000000 ERROR: could not insert 'phram': Input/output error [ 1573.410000] phram: ioremap_fullcache failed Anyway, I'll start the buildd now with just 256M enabled to see how well that works out... :-) -- Ciao... // Fon: 0381-2744150 Ingo \X/ http://blog.windfluechter.net gpg pubkey: http://www.juergensmann.de/ij_public_key.asc
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