negative numbers in bonnie++ report

[spr...@gmail.com]

Hi, anyone ever seen negative numbers being reported in bonnie++ output? I am seeing this across multiple iterations of my tests. Anyone know what a negative value denotes in these contexts? 


Server 1(256G ram): rhel 6.7 (Linux server1 2.6.32-642.1.1.el6.x86_64 #1 SMP Tue May 31 11:37:28 PDT 2016 x86_64 x86_64 x86_64 GNU/Linux) 

Version  1.97       ------Sequential Output------ --Sequential Input- --Random- 
Concurrency   1     -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- 
Machine        Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP  /sec %CP 
server1   3000G   968  99 -60318  20 -29223  15  3577  81 -64610  16  45.3  57 
Latency             11721us    2807ms    2649ms     162ms    1598ms    1227ms 
Version  1.97       ------Sequential Create------ --------Random Create-------- 
server1         -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- 
              files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP 
                 16  2548   0 +++++ +++ +++++ +++ +++++ +++ +++++ +++ +++++ +++ 
Latency               344us     367us     298us      97us      48us      24us 
1.97,1.97,server1,1,1470430337,3000G,,968,99,-60318,20,-29223,15,3577,81,-64610,16,45.3,57,16,,,,,2548,0,+++++,+++,+++++,+++,+++++,+++,+++++,+++,+++++,+++,11721us,2807ms,2649ms,162ms,1598ms,1227ms,344us,367us,298us,97us,48us,24us 

Server 2(256G ram): rhel 6.7 (Linux server2 2.6.32-642.1.1.el6.x86_64 #1 SMP Tue May 31 11:37:28 PDT 2016 x86_64 x86_64 x86_64 GNU/Linux) 

Version  1.97       ------Sequential Output------ --Sequential Input- --Random- 
Concurrency   1     -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- 
Machine        Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP  /sec %CP 
server2 3000G   974  99 -69499  19 -34525   9   967  24 -71677  12  27.4  29 
Latency              8677us    2349ms    3166ms    2030ms    1560ms     327ms 
Version  1.97       ------Sequential Create------ --------Random Create-------- 
server2 -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- 
              files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP 
                 16 18530  22 +++++ +++ +++++ +++ +++++ +++ +++++ +++ +++++ +++ 
Latency               212us     304us     467us     217us      12us     206us 
1.97,1.97,server2,1,1470408160,3000G,,974,99,-69499,19,-34525,9,967,24,-71677,12,27.4,29,16,,,,,18530,22,+++++,+++,+++++,+++,+++++,+++,+++++,+++,+++++,+++,8677us,2349ms,3166ms,2030ms,1560ms,327ms,212us,304us,467us,217us,12us,206us 


On a related note, which server do you guys like more for io performance?