Re: Why aptitude is sometimes slow inside xen domU ?
On Wed, Feb 25, 2009 at 6:28 PM, Olivier B. <email@example.com> wrote:
> In fact in my case the domU is really really slow :
> time dd if=/dev/zero of=TEST bs=4k count=12500
> 12500+0 enregistrements lus
> 12500+0 enregistrements écrits
> 51200000 bytes (51 MB) copied, 37,504 s, 1,4 MB/s
> real 0m37.520s
> user 0m0.004s
> sys 0m0.352s
> 1.4MB/s... and the Dom0 do only 40MB/s on write.
I have a similar issue with disk (300k/s)
My error was mounting partitions with "sync" options in domU
> So it's not an aptitude problem.
> Javier Barroso a écrit :
>> On Sun, Feb 15, 2009 at 3:22 AM, Olivier B. <firstname.lastname@example.org
>> <mailto:email@example.com>> wrote:
>> Javier Barroso-3 wrote:
>> > My aptitude is very slow when it is running inside domU:
>> > aptitude take 3 minutes on:
>> > Writing extended state information... 67%
>> I have same problem on a fresh Lenny Dom0/DomU setup.
>> Do you find where was the problem for you ?
>> No, I didn't
>> It is possible this issue is related with apt/sources.list and extra repos
>> (I remember memory-cache problems whith this). I can't remember now in wich
>> mv it happened, so I'm not sure about his sources.list content.
>> How could we replicate this issue without aptitude (writing many files in
>> very short time ?)?