[linux-mm-cc] kernel make benchmark on small x86 desktop
Nai Xia
nai.xia at gmail.com
Mon Apr 14 02:38:41 EDT 2008
Hi, Nitin,
Unfortunately, this result is negative.
I limited the RAM memory to 56M, after that the kernel compling test was done:
# time make -j4 bzImage >/dev/null 2>&1
the result without compcache:
real 125m57.405s
user 19m28.617s
sys 2m41.942s
the result with default loaded compcache:
real 153m35.538s
user 19m45.838s
sys 4m2.727s
I personally think this give us the information when some "stale"
anonymous pages get "pinned" in memory for a long time, it is bad for
overal performance.
This will never happen in fillmem benchmark, because it travels the
memory back and forth,
the possibility of visiting each page is equal.
How do you think ?
Best Regards,
Nai
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