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Re: yum 3.2.23 more than 10x slower than 3.2.21?!




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



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