Re: [Linux-fbdev-devel] Why aty128fb is so slow?

[James S. <jsi...@in...>]

> Hello,
> Could anybody explain why aty128fb is so slow?
> I'm using kernel-2.4.20.
> 
> 01:00.0 VGA compatible controller: ATI Technologies Inc Rage 128 Pro TF (prog-if 00 [VGA])
>         Subsystem: ATI Technologies Inc Rage 128 Pro TF
>         Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping+ SERR- FastB2B-
>         Status: Cap+ 66Mhz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
>         Latency: 32 (2000ns min), cache line size 08
>         Interrupt: pin A routed to IRQ 11
>         Region 0: Memory at e0000000 (32-bit, prefetchable) [size=64M]
>         Region 1: I/O ports at c000 [size=256]
>         Region 2: Memory at e7000000 (32-bit, non-prefetchable) [size=16K]
>         Expansion ROM at <unassigned> [disabled] [size=128K]
>         Capabilities: [50] AGP version 2.0
>                 Status: RQ=31 SBA+ 64bit- FW- Rate=x1,x2
>                 Command: RQ=0 SBA+ AGP- 64bit- FW- Rate=<none>
>         Capabilities: [5c] Power Management version 2
>                 Flags: PMEClk- DSI- D1+ D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
>                 Status: D0 PME-Enable- DSel=0 DScale=0 PME-
> 
> 
> Computer has Athlon 1.8+ processor on K7VTA3 motherboard.
> 
> In directory with 5000 files ls on console takes more than 6 seconds.
> In xterm or rxvt ls takes only 0.6 s.

Because the driver is completely unaccelerated. Everything is drawn pixel 
by pixel :-( 2.5.X is much faster :-)