[ILUG] X gobbles CPU with online.ie

[Paul Jakma]

On Fri, 10 Nov 2000, Niall O Broin wrote:

> and the difference is that I now have a page open from online.ie (doesn't
> appear to matter much which page). In this state, my mouse response becomes
> sluggish (though only when the Netscape screen is the current one).
> 

weird.. i see it too:

non-online.ie:
 1055 paul      20  19   812  808   600 R N  96.6  0.6  8208m dnetc
  776 root       9  -1 40076  38M  2024 R <   2.1 30.7  92:13 X
 5315 paul      12   0  1012 1012   772 R     0.5  0.7   0:00 top

online.ie:

 1055 paul      20  19   812  808   600 R N  52.6  0.6  8209m dnetc
  776 root       9  -1 40076  38M  2024 R <  27.0 30.7  92:32 X
 3446 paul       9   0 15292  14M  4784 R    18.6 12.0   1:51
netscape


my mouse/pc stays perfectly responsive though. (XF4.0.1)

> And while we're about X CPU usage oddities - look at this.
> 
> 361 root      12   0 64896  63M  2224 R       0 38.4 25.2  12:31 X
> 
> 
> What's going on here - no. I'm not simultaneously looking at two pages from
> Online (must try that :-) - I'm not even looking at one and before I ran a
> particular command X was quiescent again i.e. using < 1% of CPU. And what
> terrible X killer am I running - ping -f localhost (idle curiosity as to how
> many packets were dropped when no network was involved). Now what is THAT
> doing to X ?

well... i think i can explain that one. firstly:

The xterminal app must hit X pretty hard (it's constantly drawing and
undrawing those .'s). (which also hits the kernel, as it all has to
go through Unix sockets).

ping -f hits your kernel a little bit, esp. if it's 2.2.

here it is on my box:

5375 root   20   0   584  584   496           R    38.4  0.4 0:08 ping
 776 root   19  -1 40076  38M  2024           R <  29.5 30.7 93:11 X
2940 paul   17   0  1784 1280   844 do_poll   S    24.4  1.0 0:27 gnome-t

> Again, mouse performance is sluggish, but only when I'm

not at all sluggish here. (XF4.0.1 / 2.4.0-test10)

> OK - I've gone on long enough. None of this is life threatening, but it IS
> all very curious :-)
> 

perhaps the traditional:

"it hurts when i do xyz!"
"so don't do that...."

might be helpful.. :)

> 
> 
> Regards,
> 
> 
> Niall
> 
> 

regards,
-- 
Paul Jakma	paul at clubi.ie
PGP5 key: http://www.clubi.ie/jakma/publickey.txt
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