I ran dbench 48 four times in succession for the following recent kernels. It looks like there may be a slight drop in performance for -ac5. For -ac4 and -ac5, the throughput dropped on run #3. That's probably just a fluke. I'll repeat these runs later when I get a chance. This was performed with a Dell 420 dual P-III ( 256 MB, 733 MHz), with a ST317221A ATA DISK drive and ReiserFS 3.6.23. Each test was done under the same conditions, running KDE 2.0, one xterm, right after booting. My script did not wait between runs. 2.4.0-prerelease: average 10.9536 MB/sec Throughput 11.1771 MB/sec (NB=13.9714 MB/sec 111.771 MBit/sec) Throughput 10.7172 MB/sec (NB=13.3965 MB/sec 107.172 MBit/sec) Throughput 10.8443 MB/sec (NB=13.5554 MB/sec 108.443 MBit/sec) Throughput 11.0758 MB/sec (NB=13.8447 MB/sec 110.758 MBit/sec) 2.4.0-prerelease-ac4: average 11.4729 MB/sec Throughput 11.4646 MB/sec (NB=14.3307 MB/sec 114.646 MBit/sec) Throughput 13.3765 MB/sec (NB=16.7206 MB/sec 133.765 MBit/sec) Throughput 9.81891 MB/sec (NB=12.2736 MB/sec 98.1891 MBit/sec) Throughput 11.2315 MB/sec (NB=14.0393 MB/sec 112.315 MBit/sec) 2.4.0-prerelease-ac5: average 9.2181 MB/sec Throughput 9.18921 MB/sec (NB=11.4865 MB/sec 91.8921 MBit/sec) Throughput 9.06864 MB/sec (NB=11.3358 MB/sec 90.6864 MBit/sec) Throughput 7.69499 MB/sec (NB=9.61874 MB/sec 76.9499 MBit/sec) Throughput 10.9196 MB/sec (NB=13.6495 MB/sec 109.196 MBit/sec) Steven - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
