different size of apache's binary

Does anybody know why apache has different size of it's run time binary on different machines even if it's compiled with the same options?
here are you examples (OS is the same on these three servers Red Hat 7.2)

--
1st server:
Code:
  PID USER     PRI  NI  SIZE  RSS SHARE STAT %CPU %MEM   TIME COMMAND
23428 nobody     9   0  2900 2532  1960 S     1.6  0.2   0:00 httpd
20722 nobody    10   0  2812 2188  2060 S     0.8  0.2   0:01 httpd
20780 nobody    10   0  2812 2184  1928 S     0.8  0.2   0:01 httpd
20823 nobody    10   0  2808 2152  1900 S     0.8  0.2   0:01 httpd
20861 nobody    10   0  2808 2188  1932 S     0.8  0.2   0:01 httpd
20865 nobody    10   0  2876 2280  2096 S     0.8  0.2   0:01 httpd
20872 nobody    10   0  2812 2204  2032 S     0.8  0.2   0:01 httpd
21032 nobody     9   0  2824 2168  1924 S     0.8  0.2   0:01 httpd
2nd server:
Code:
  PID USER     PRI  NI  SIZE  RSS SHARE STAT %CPU %MEM   TIME COMMAND
17263 freehost  11   0  5240 3764  3384 S     0.3  0.1   0:00 httpd
17429 freehost  10   0  5240 4484  3376 S     0.3  0.2   0:00 httpd
17597 freehost   9   0  5244 5148  3476 S     0.3  0.2   0:00 httpd
17269 freehost   9   0  5248 5104  3432 S     0.1  0.2   0:00 httpd
17271 freehost   9   0  5240 3800  3432 S     0.1  0.1   0:00 httpd
17277 freehost   9   0  5240 3760  3388 S     0.1  0.1   0:00 httpd
17285 freehost   9   0  5240 3760  3388 S     0.1  0.1   0:00 httpd
17298 freehost   9   0  5248 5048  3376 S     0.1  0.2   0:00 httpd
17319 freehost   9   0  5252 5124  3448 S     0.1  0.2   0:00 httpd
17372 freehost   9   0  5240 3764  3404 S     0.1  0.1   0:00 httpd
3d server:
Code:
  PID USER     PRI  NI  SIZE  RSS SHARE STAT %CPU %MEM   TIME COMMAND
11752 nobody    10   0  3164 3164  2460 S     0.8  0.6   0:16 httpd
11762 nobody    10   0  3152 3152  2460 S     0.8  0.6   0:19 httpd
11768 nobody    10   0  3096 3096  2460 S     0.8  0.6   0:16 httpd
11776 nobody    10   0  3116 3116  2460 S     0.8  0.6   0:17 httpd
11785 nobody    10   0  3168 3168  2460 S     0.8  0.6   0:17 httpd
11790 nobody    10   0  3100 3100  2460 S     0.8  0.6   0:16 httpd
11794 nobody    10   0  3100 3100  2460 S     0.8  0.6   0:16 httpd
11795 nobody    10   0  3112 3112  2460 S     0.8  0.6   0:16 httpd
11802 nobody    10   0  3072 3072  2460 S     0.8  0.5   0:17 httpd
--

Looks very odd to me.
Anybody?

 

 

 

 

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