[lkml]   [2001]   [May]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: How can I help with VIA MVP3 problems?
I'm not on the list so please also reply directly to me. I may soon be done :-)

I was made aware of the following:

>On Sat, May 12, 2001 at 07:37:23PM +0200, Peter Rasmussen wrote:
>> 2.4.4-ac8 doing "time make dep clean bzImage modules modules_install" :
>> udgaard:/usr/src/linux# cat /proc/meminfo
>> total: used: free: shared: buffers: cached:
>> Mem: 328101888 317947904 10153984 0 67219456 130404352
>> Swap: 542859264 0 542859264
>> ======================== 2.2.16 ===========================
>> udgaard:~$ cat /proc/meminfo
>> total: used: free: shared: buffers: cached:
>> Mem: 65789952 60755968 5033984 28221440 7872512 24219648
>> Swap: 542859264 1368064 541491200
>2.2.16 only recognizes 64 Mb? That makes all of the numbers less
>interesting, I guess.
I hadn't noticed that before and it helped me improving the test. By ensuring
that the two kernels looked at the same size RAM I found that the performance
numbers were the same.

However, I then now wonder why my system gets slower when increasing the amount of main RAM?

Is it a RAM caching problem in the chipset or the board similar to the braindead
Intel VX430 chipset that couldn't handle more than 64MB? I hope not, but I can't
see any other reason, even though I thought such problems were of the past?
Please let me know if you know something about it.

I found the following relations with regard to memory settings. As the 2.2 and
2.4 kernels I use performed the same with little RAM (64MB), I stayed with the
2.4.4-ac8 for simplicity's sake.

A 2.4.4-ac8 kernel build:

2.4.4-ac8 with 64MB RAM mem-setting: real 8m26.180s
user 7m5.340s
sys 0m39.430s

2.4.4-ac8 with 128MB RAM mem-setting: real 8m20.902s
user 7m8.810s
sys 0m39.800s

2.4.4-ac8 with 160MB RAM mem-setting: real 8m21.653s
user 7m13.830s
sys 0m37.840s

2.4.4-ac8 with 192MB RAM mem-setting: real 9m48.632s
user 8m39.270s
sys 0m39.740s

So it seems around here the performance starts to decrease.

I am still puzzled why the shared memory like the following is always zero on
the 2.4 kernels? All I can remember checking it on has it like that, but I can't
find any explanations about it?

udgaard:/usr/src/linux# cat /proc/meminfo
total: used: free: shared: buffers: cached:
Mem: 64135168 63148032 987136 0 2965504 34447360
Swap: 542859264 147456 542711808

Thank you very much,

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-03-22 12:52    [W:0.024 / U:0.084 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site