Messages in this thread | | | From | "Barry K. Nathan" <> | Subject | Re: 2.4 cpu usage... | Date | Tue, 23 Jan 2001 13:37:32 -0800 (PST) |
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LA Walsh wrote: [snip] > So the kapm thing could be a "display" / accounting problem, but the > slowdown in vmware/X was real. I ran a WIN Norton "Benchmark" -- comes > up reliably over "300" -- usually around 320-350 under 2.2.17. Under > 2.4, it came up reliably *under* 300 with typical being about 265". > > So...I'm bummed. I'm assuming a 30% degradation in an app is probably > not expected behavior? Swap usage is '0' in both OS's (i.e. it's not > a run out of memory issue).
I actually saw a similar type of slowdown on my Inspiron 5000e with 2.4 (test10preX or test11preX, where I forget what X was, probably 5 or so).
Specifically, the following command read off the disk more slowly:
gzip -1 < /dev/hda | nc some_other_box some_port -w 1
even when I got rid of the gzip -1 (redirecting /dev/hda straight into nc, or piping cat into nc).
In my case, the slowdown was clearly visible - the disk light was at full brightness under 2.2.16, but not 2.4.0testwhatever.
I wanted to try again without any APM stuff in the kernel (or at least, not APM CPU idling) before reporting it, but I never got a chance to do that.
-Barry K. Nathan <barryn@pobox.com> - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/
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