[SERVER-9862] it returns 0ms by executing explain,but i get the result slowly Created: 05/Jun/13  Updated: 10/Dec/14  Resolved: 20/Aug/13

Status: Closed
Project: Core Server
Component/s: Performance
Affects Version/s: 2.0.2
Fix Version/s: None

Type: Question Priority: Major - P3
Reporter: handyyu Assignee: David Hows
Resolution: Done Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified
Environment:

linux 2.6.18-92.el5 x86_64


Attachments: JPEG File 1.jpg     JPEG File 2.jpg     JPEG File 3.jpg    
Participants:

 Description   

Hi:
I found that it's slowly sometimes when i had kept executing the same query,
but the explain shows it costs 0ms!

The first snapshot picture:
it tells me that costs 0ms.
The second snapshot picture:
i run "./bin/mongosniff --source NET lo 27032"
The last snapshot picture:
"strace -p xxxx -tt -T", xxxx is the pid of the snapshot picture



 Comments   
Comment by David Hows [ 05/Jul/13 ]

Hi Handyyu,

I cant see any timestamps on those mongosniff or outputs.

Can you describe what you mean by "slow"? How do you see this slowness?

Thanks,
David

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