Re: [PATCH] trim memory not covered by WB MTRRs

From: Justin Piszcz
Date: Wed Jun 06 2007 - 18:39:57 EST



On Wed, 6 Jun 2007, Jesse Barnes wrote:

On Wednesday, June 6, 2007 3:26 pm Justin Piszcz wrote:
Nope, I booted with only netconsole= options. I have a lot of HW in
the box and I guess the buffer is too small. Not sure where to
change it in the kernel. Looking..

It's called "kernel log buffer size" and it's in "General setup".

Jesse


Seems stable & fast so far, except when it hit swap :)

top - 18:38:13 up 5 min, 6 users, load average: 38.56, 12.65, 4.52
Tasks: 227 total, 64 running, 163 sleeping, 0 stopped, 0 zombie
Cpu0 : 0.0%us, 23.9%sy, 0.0%ni, 0.0%id, 72.7%wa, 0.0%hi, 3.4%si, 0.0%st
Cpu1 : 0.0%us, 23.5%sy, 0.0%ni, 1.0%id, 75.5%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu2 : 0.0%us, 24.1%sy, 0.0%ni, 0.0%id, 75.9%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu3 : 0.0%us, 23.6%sy, 0.0%ni, 0.0%id, 76.4%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 8039576k total, 7998988k used, 40588k free, 12k buffers
Swap: 16787768k total, 879324k used, 15908444k free, 16316k cached

Tested with
$ stress --vm 32 --vm-bytes 250M
and
$ stress --vm 64 --vm-bytes 250M

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
248 root 10 -5 0 0 0 D 18 0.0 0:07.81 kswapd0
3788 war 18 0 256m 115m 164 D 3 1.5 0:01.32 stress
3800 war 18 0 256m 7300 160 R 3 0.1 0:00.58 stress
3801 war 18 0 256m 34m 160 R 3 0.4 0:02.48 stress
3808 war 18 0 256m 217m 164 R 3 2.8 0:01.16 stress
559 root 10 -5 0 0 0 D 2 0.0 0:00.15 md0_raid1
3771 war 18 0 256m 174m 164 R 2 2.2 0:01.30 stress
3785 war 18 0 256m 30m 164 R 2 0.4 0:01.42 stress
3813 war 18 0 256m 34m 164 R 2 0.4 0:01.06 stress
3787 war 18 0 256m 24m 160 R 2 0.3 0:00.25 stress
3794 war 18 0 256m 40m 160 R 2 0.5 0:00.14 stress
3778 war 18 0 256m 109m 164 R 2 1.4 0:01.23 stress
3783 war 18 0 256m 185m 164 R 2 2.4 0:01.29 stress
3799 war 18 0 256m 172m 164 R 2 2.2 0:01.07 stress
3816 war 18 0 256m 203m 160 R 2 2.6 0:00.39 stress
3819 war 18 0 256m 144m 160 R 2 1.8 0:00.40 stress
3820 war 18 0 256m 147m 160 R 2 1.9 0:00.39 stress
3825 war 18 0 256m 91m 164 R 2 1.2 0:01.16 stress
3777 war 18 0 256m 29m 164 R 1 0.4 0:01.05 stress
3779 war 18 0 256m 197m 164 R 1 2.5 0:01.29 stress
3805 war 18 0 256m 216m 160 R 1 2.8 0:00.36 stress
3812 war 18 0 256m 30m 164 R 1 0.4 0:01.14 stress
3830 war 18 0 256m 176m 164 R 1 2.3 0:01.17 stress
3831 war 18 0 256m 64m 164 R 1 0.8 0:01.40 stress
3769 war 18 0 256m 43m 164 R 1 0.6 0:01.23 stress
3770 war 18 0 256m 169m 164 R 1 2.2 0:01.18 stress
3773 war 18 0 256m 44m 160 R 1 0.6 0:00.29 stress
3774 war 18 0 256m 21m 160 R 1 0.3 0:00.21 stress
3780 war 18 0 256m 167m 164 R 1 2.1 0:01.33 stress
3781 war 18 0 256m 143m 164 R 1 1.8 0:01.35 stress
3798 war 18 0 256m 153m 164 R 1 1.9 0:01.16 stress
3807 war 18 0 256m 31m 164 R 1 0.4 0:01.17 stress
3817 war 18 0 256m 185m 160 R 1 2.4 0:00.40 stress
3822 war 18 0 256m 200m 160 R 1 2.6 0:00.41 stress
3824 war 18 0 256m 8684 160 R 1 0.1 0:00.16 stress
3827 war 18 0 256m 103m 164 R 1 1.3 0:00.95 stress
3828 war 18 0 256m 1976 160 R 1 0.0 0:00.19 stress
2026 daemon 30 15 30580 436 372 D 1 0.0 0:02.10 bindgraph.pl
3768 war 18 0 256m 81m 164 R 1 1.0 0:01.84 stress
3772 war 18 0 256m 158m 164 R 1 2.0 0:01.11 stress
3782 war 18 0 256m 180m 164 R 1 2.3 0:01.25 stress
3786 war 18 0 256m 173m 164 R 1 2.2 0:01.13 stress
3790 war 18 0 256m 20m 164 R 1 0.3 0:01.10 stress
3791 war 18 0 256m 36m 164 R 1 0.5 0:01.80 stress
3796 war 18 0 256m 111m 164 R 1 1.4 0:01.04 stress
3797 war 18 0 256m 120m 164 R 1 1.5 0:01.12 stress
3803 war 18 0 256m 129m 160 R 1 1.6 0:01.98 stress
3804 war 18 0 256m 234m 160 R 1 3.0 0:00.40 stress
3806 war 18 0 256m 49m 164 R 1 0.6 0:00.99 stress
3809 war 18 0 256m 54m 164 R 1 0.7 0:01.16 stress
3814 war 18 0 256m 38m 164 R 1 0.5 0:00.97 stress
3815 war 18 0 256m 69m 164 R 1 0.9 0:01.06 stress
246 root 15 0 0 0 0 D 0 0.0 0:00.01 pdflush
3687 war 15 0 18012 896 560 R 0 0.0 0:00.88 top
3775 war 18 0 256m 153m 164 R 0 2.0 0:01.14 stress
3776 war 18 0 256m 55m 164 R 0 0.7 0:01.34 stress
3784 war 18 0 256m 13m 164 R 0 0.2 0:00.96 stress
3789 war 18 0 256m 46m 164 R 0 0.6 0:01.54 stress
3792 war 18 0 256m 12m 164 R 0 0.2 0:01.00 stress
3793 war 18 0 256m 44m 164 R 0 0.6 0:00.96 stress
3795 war 18 0 256m 196m 164 R 0 2.5 0:01.06 stress
3802 war 18 0 256m 22m 160 R 0 0.3 0:02.70 stress
3810 war 18 0 256m 40m 164 R 0 0.5 0:01.06 stress
3818 war 18 0 256m 146m 160 R 0 1.9 0:00.34 stress
3829 war 18 0 256m 130m 164 R 0 1.7 0:01.11 stress
247 root 15 0 0 0 0 D 0 0.0 0:00.01 pdflush
554 root 10 -5 0 0 0 D 0 0.0 0:00.01 md2_raid1
3811 war 18 0 256m 61m 160 R 0 0.8 0:05.85 stress
3821 war 18 0 256m 136m 160 R 0 1.7 0:00.37 stress
3823 war 18 0 256m 204m 160 R 0 2.6 0:00.34 stress
3826 war 18 0 256m 95m 164 R 0 1.2 0:01.03 stress




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