2.2.14 feels slow and non-interactive.

Mike A. Harris mharris en meteng.on.ca
Jue Ene 20 08:23:21 CST 2000


On Thu, 20 Jan 2000, Jorgen Skjaanes wrote:

>> My system is a K6-200 with 96 Megs of RAM.  The kernels that I'm
>> using are stock Official kernels from ftp.kernel.org with NO
>> external patches and NO 3rd party hacks or kernel modules.  Just
>> a plain Jane kernel.
>> 
>> Anyone else experience loss of interactivity and slowdowns on
>> 2.2.14?
>
>Well, yes, I think so. The problem is I don't have a good "before"
>situation to compare with. I installed a database service doing 
>some logging every 5 minutes and upgraded from 2.2.8-pre5 at the
>same time. After that when the database is doing its stuff both 
>the database process and netscape gets stuck in D-state in wait_on_page
>for many seconds while the disk (Adaptec AIC7xxx contr) is trashing 
>like mad. If I close netscape during this I can see the netscape
>process staying in wait_on_page for up to 15 seconds before it exits.
>The computer (a PPro-200, 160MB) is being so unresponsive that I've 
>ordered a new one. I sort of thought it was just being overloaded, 
>and maybe it is, but processes being stuck in D-state for such a long 
>time doesn't seem right. And since you asked...
>
>And it's not swap related. Or at least vmstat doesn't say so. Though
>it is allways deep into swap. Right now when X is not running:
>
>             total       used       free     shared    buffers     cached
>Mem:        160512     157532       2980      39880       3276     115928
>-/+ buffers/cache:      38328     122184
>Swap:        72288      26980      45308
>
>( I know this is not a good and detailed report, but since I haven't seen
>  anyone else seeing this I still am not sure it's a bug. And I don't want
>  to flood the list with ps output and every litle detail if it isn't.)

        total:    used:    free:  shared: buffers:  cached:
Mem:  98168832 95830016  2338816 14954496 28844032 37449728
Swap: 115077120 18284544 96792576

Another oddity is that I'm using the EXACT same apps now as I did
a year ago, and a year ago I had 64M of RAM, and around 70M of
swap and it would barely ever go into swap at all for any reason
(2.2.[0-5])..  Now I have 96Mb RAM and 115Mb swap and it is in
swap quite a bit, but not usually more than 20Mb or so.

The only processes using significant memory right now are:

 1239 mharris    5   0 16604  10M  4860 S       0  0.5 11.5   4:17 netscape-com
  831 root       0   0  9136 8912   800 S       0  0.0  9.2   2:45 X
  721 mharris    0   0  3060 2988  1208 S       0  0.0  3.1   2:13 pine
  871 mharris    0   0  2044 1148   852 S       0  0.0  1.1   0:02 kpanel
  840 mharris    0   0  1796 1092   884 S       0  0.0  1.1   0:18 kbgndwm
 4959 root      14   0   988  988   788 R       0  1.3  1.0   0:00 top
  870 mharris    0   0  1172  984   240 S       0  0.0  1.0   0:00 krootwm
  836 mharris    0   0  1620  780   600 S       0  0.0  0.8   0:03 kwm


--
Mike A. Harris                                     Linux advocate     
Computer Consultant                                  GNU advocate  
Capslock Consulting                          Open Source advocate

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