[linux-mm-cc] fillmem performance result in a limited memory x86 desktop
Nai Xia
nai.xia at gmail.com
Sun Apr 13 05:47:33 EDT 2008
Hi, all
I've done some testing using fillmem in a limited memory x86 desktop.
Testing environment:
OS: debian sid (updated today) + kernel 2.6.24.4
CPU: Pentium(R) 4 CPU 2.00GHz,
Memory: 119M ram, 5026M swap partition
DISK:
model: WDC WD800BB-00JHC0,
raw swap performance: (hdparm -tT /dev/hda3)
Timing cached reads: 287.43 MB/sec
Timing buffered disk reads: 36.35 MB/sec
Test Result:
fillmem(M) unused used
80 0m0.570s 0m0.413s
100 0m0.535s 0m0.502s
120 0m5.492s 0m3.084s
140 0m7.671s 0m6.689s
160 0m11.050s 0m8.036s
180 0m14.849s 0m10.304s
200 0m16.968s 0m13.803s
220 0m22.178s 0m18.948s
240 0m26.036s 0m23.735s
260 0m27.664s 0m26.053s
280 0m34.054s 0m29.959s
300 0m36.213s 0m31.993s
It's worth to note that I observed the deviation of the numbers is
somewhat high (up to 30%~40%). Any idea to reduce it?
Or we may just ignore it ?
Best Regards,
Nai
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