From: kevin.bowling@kev009.com   
      
   On 12/1/23 04:07, Christian Holzapfel wrote:   
   > Here a few benchmarks from my systems:   
   >   
   > Model 6886 (PC 750)   
   > AMD K6-III @ 400 MHz   
   > 192 MB RAM   
   > Windows 95   
   > Burst Mode Rx+Tx   
   > Netio 1.32   
   >   
   > Packet size  1k bytes:  4751.55 KByte/s Tx,  4547.97 KByte/s Rx.   
   > Packet size  2k bytes:  6082.19 KByte/s Tx,  4748.86 KByte/s Rx.   
   > Packet size  4k bytes:  6772.06 KByte/s Tx,  5595.94 KByte/s Rx.   
   > Packet size  8k bytes:  7378.91 KByte/s Tx,  5575.82 KByte/s Rx.   
   > Packet size 16k bytes:  7996.92 KByte/s Tx,  6135.80 KByte/s Rx.   
   > Packet size 32k bytes:  8226.20 KByte/s Tx,  6186.44 KByte/s Rx.   
   >   
   >   
   >   
   > Model 9576i (Lacuna)   
   > AMD X5 @ 133 MHz   
   > 64 MB RAM   
   > No L2 cache :-(   
   > Windows 95   
   > Burst Mode Rx+Tx   
   > Netio 1.32   
   >   
   > Packet size  1k bytes:  1193.33 KByte/s Tx,  936.21 KByte/s Rx.   
   > Packet size  2k bytes:  1290.28 KByte/s Tx,  1114.61 KByte/s Rx.   
   > Packet size  4k bytes:  1389.92 KByte/s Tx,  1575.54 KByte/s Rx.   
   > Packet size  8k bytes:  1741.82 KByte/s Tx,  1541.64 KByte/s Rx.   
   > Packet size 16k bytes:  1969.17 KByte/s Tx,  1173.42 KByte/s Rx.   
   > Packet size 32k bytes:  1934.02 KByte/s Tx,  1874.79 KByte/s Rx.   
   >   
   >   
   >   
   > Model 7013-59H (RS/6000)   
   > POWER2 @ 67 MHz   
   > 1,25 GB RAM   
   > 1 MB L2 cache   
   > AIX 4.3.3 (IBM's driver)   
   > Netio 1.32   
   >   
   > Packet size  1k bytes:  5113.53 KByte/s Tx,  6395.88 KByte/s Rx.   
   > Packet size  2k bytes:  6059.71 KByte/s Tx,  7318.23 KByte/s Rx.   
   > Packet size  4k bytes:  7213.85 KByte/s Tx,  7667.44 KByte/s Rx.   
   > Packet size  8k bytes:  7877.74 KByte/s Tx,  8501.13 KByte/s Rx.   
   > Packet size 16k bytes:  8819.90 KByte/s Tx,  8811.09 KByte/s Rx.   
   > Packet size 32k bytes:  8627.93 KByte/s Tx,  9067.06 KByte/s Rx.   
   >   
   >   
   >   
   > Model 7006-42T (RS/6000)   
   > PowerPC @ 120 MHz   
   > 192 MB RAM   
   > 0.5 MB L2 cache   
   > AIX 4.3.3 (IBM's driver)   
   > Netio 1.32   
   >   
   > Packet size  1k bytes:  2558.84 KByte/s Tx,  619.03 KByte/s Rx.   
   > Packet size  2k bytes:  2754.74 KByte/s Tx,  1297.03 KByte/s Rx.   
   > Packet size  4k bytes:  3340.64 KByte/s Tx,  3816.94 KByte/s Rx.   
   > Packet size  8k bytes:  4013.11 KByte/s Tx,  3763.10 KByte/s Rx.   
   > Packet size 16k bytes:  4551.11 KByte/s Tx,  3802.62 KByte/s Rx.   
   > Packet size 32k bytes:  4562.02 KByte/s Tx,  4275.55 KByte/s Rx.   
   >   
   >   
   > What's interesting is the mixed performance on the RS/6000 systems. The   
   later mid-range workstation machine with a faster CPU performs worse than the   
   early 1992 high-performance server class system. I assume, the 7013 was built   
   specifically for high-   
   throughput and low-latency applications.   
   >   
      
   In particular, the memory bandwidth is insane on the POWER2 systems.   
   The MHz is also misleading, it is a superscalar processor with 2 integer   
   units and has double the cache (10ns I believe).  It would be   
   interesting to compare the context switch time of the PowerPC.   
      
   > That the Lacuna and Reply perform so low is disappointing, but maybe there's   
   a reason why IBM did not sell this adapter to PS/2 users - or maybe we will   
   find a magic switch to make the card operate faster.   
      
   I suspect you may be able to profit from games with the tx and rx   
   interrupt masks.. the Linux pcnet32 driver looks like it has a (limited)   
   poll mode which would be preferable to dealing with an interrupt for   
   every packet on this old hw.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)