Messages in this thread | | | From | "M Benz" <> | Subject | cache and buffer usage with kernel 2.6.10 | Date | Mon, 27 Dec 2004 16:33:41 +0000 |
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Hello,
I just upgrade my linux box from 2.6.8.1 to 2.6.10 yesterday, and I found that the memory usage behavier is very different btw the 2 kernels. I built 2.6.10 with the same .config with my 2.6.8.1
My box is a Pentium 4 HT machine, with 2GB of RAM, it's running apache to service a very busy website, around 1.5M PHP pageviews per day.
With kernel 2.6.8.1, "top" always show me acount 150MB buffer, 1.3-1.5GB cached, and 1-2M free, after switch to kernel 2.6.10, "top" shows me around 500MB buffer, 800M cache, and several MB free. after around 10 hours with 2.6.10, top now shows me 800MB buffer, 500MB cache and 2-300MB free.
Is there any change with memory management btw the two kernels? Also, what is the different btw "cache" and "buffer"? Why don't kernel 2.6.10 use all the memory but leave around 200MB free?
Thanks.
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