Re: [Vserver] using of 'vlimit --cpu', problems with 'gcc'

From: Jaroslav Tomecek <adray_at_seznam.cz>
Date: Mon 30 Oct 2006 - 14:26:02 GMT
Message-ID: <45460B7A.2090606@seznam.cz>

Björn Steinbrink napsal(a):
> On 2006.10.30 14:54:36 +0100, Jaroslav Tomecek wrote:
>
>> Hi,
>> 1) I tried '/usr/sbin/vlimit -c 1000 --cpu 30'. It returned:
>> 'vc_set_rlimit(): Invalid argument'
>> Any idea?
>>
>
> It's probably just not implemented/supported. I didn't check though. But
> do you really _want_ that? It would limit your vserver to 30 seconds of
> cpu time and kill it after it has used them up.
> If you want to limit cpu usage you should rather take a look at vsched.
>
I'm testing 'vserver' for some organisation. They want me to test
everything ;-). Btw. I tried cpu scheduling. I set 1/5 of cpu for the
first and 4/5 of cpu for the second 'vserver'. Then I ran two identical
programs, each in one 'vserver'. It computed some floating stuff. After
each e.g. 1000 cycles it printed dot. I expected that there would be
five times more dots in the second vserver after some time. But the
numbers of dots were identical.

# cat /etc/vservers/test1/schedule

1
5
100
200
10
dummy

# cat /etc/vservers/test1/schedule

4
5
100
200
10
dummy

Is it the right way?
>
>> 2) I compiled a program on FC6 using g++ (GCC) 4.1.1 20061011 (Red Hat
>> 4.1.1-30) on host server:
>>
>> #include <iostream>
>>
>> using namespace std;
>>
>> int main(void)
>> {
>> return 0;
>> }
>>
>> But in FC5-based vserver 'test' it returned:
>> '[root@test /]# ./test-programme
>> Floating point exception'
>>
>
> Maybe a glibc/libstdc++ conflict? No real idea about it... :(
>
>
>> Any idea?
>>
>> /usr/sbin/vserver --version
>> vserver 0.30.210 -- manages the state of vservers
>> This program is part of util-vserver 0.30.210
>>
>
> An upgrade to .211 won't hurt, but it's probably not affecting the above
> issues at all.
>
> HTH
> Björn
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>
>

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Received on Mon Oct 30 14:29:52 2006

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