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Exhibit 12.1

SolarWinds, Inc.
Computation of Ratio of Earnings to Fixed Charges
 
 
Year Ended December 31,
 
Nine Months Ended September 30,
 
2008
 
2009
 
2010
 
2011
 
2012
 
2013
Earnings:
 
 
 
 
 
 
 
 
 
 
 
Income before income taxes
$
33,022

 
$
39,905

 
$
61,150

 
$
84,803

 
$
114,519

 
$
92,314

Add: Fixed charges
9,301

 
5,418

 
2,570

 
1,306

  
1,365

 
1,276

Total earnings
$
42,323

 
$
45,323

 
$
63,720

 
$
86,109

 
$
115,884

 
$
93,590

 
 

 
 

 
 

 
 

 
 

 
 

Fixed charges:
 
 
 
 
 
 
 
 
 
 
 
Interest expense
$
8,167

 
$
3,551

 
$
747

 
$

  
$

 
$

Amortization and write-off of debt issuance costs
372

 
702

 
399

 

  

 

Estimate of interest within rental expense
762

 
1,165

 
1,424

 
1,306

  
1,365

 
1,276

Total fixed charges
$
9,301

 
$
5,418

 
$
2,570

 
$
1,306

  
$
1,365

 
$
1,276

 
 
 
 
 
 
 
 
 
 
 
 
Ratio of earnings to fixed charges (1)
4.6

 
8.4

 
24.8

 
65.9

  
84.9

 
73.3

 
(1) For the purpose of calculating such ratios, “earnings” consists of income from continuing operations before income taxes plus fixed charges and “fixed charges” consists of interest expense, amortization and write-off of debt issuance costs related to indebtedness as well as an estimate of interest expense as a component of rental expense.

As of the date of this prospectus, we have no shares of preferred stock outstanding and we have not paid any dividends on preferred stock in the periods presented. Therefore, the ratios of earnings to combined fixed charges and preferred stock dividends are not different than the ratios of earnings to fixed charges.