yum 3.2.23 more than 10x slower than 3.2.21?!

[Joe Nall]

On Jun 26, 2009, at 9:11 AM, Seth Vidal wrote:

>
>
> On Fri, 26 Jun 2009, Roberto Ragusa wrote:
>
>> Hi,
>>
>> yum got really slower a few days ago on F10, so I investigated and  
>> found that:
>>
>> (3.2.23) #yum list updates
>> real    1m28.446s
>> user    1m24.553s
>> sys     0m0.546s
>>
>> (3.2.21) #yum list updates
>> real    0m7.621s
>> user    0m6.673s
>> sys     0m0.390s
>>
>> this is with a few repositories, no net access, no disk access  
>> (everything
>> is cached), trivially reproduceable. No yum plugins (just  
>> downloadonly), no
>> PackageKit installed.
>>
>> About 90 seconds of 100% CPU (2.4GHz Core 2) is a disaster.
>
> just for fun:
> set color=never in your yum.conf
>
> and run it again.

No time difference here (2:23->2:26) for color=never on yum 3.2.23.  
More than 2 minutes of cpu time on a 3.1GHz E8400. Downgraded to  
3.2.21-2 from koji and the same 'yum list updates' takes 6.4 seconds.

joe