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Posted to bugs@httpd.apache.org by bu...@apache.org on 2013/05/05 23:33:14 UTC
[Bug 53555] Scoreboard full error with event/ssl
https://issues.apache.org/bugzilla/show_bug.cgi?id=53555
--- Comment #2 from Niklas Edmundsson <ni...@acc.umu.se> ---
We've seen AH00485: scoreboard is full, not at MaxRequestWorkers on 2.4.4 with
the event MPM, no SSL involved.
Haven't figured out the exact conditions yet, but involved are:
* High/varying load, causing worker processes to be spawned and killed,
filling up the scoreboard with G:s.
* Server reloads due to config changes.
I suspect the root cause is that server processes are flagged for killing, but
later they're needed again but instead of reviving the existing process a new
one is created. If you have a lot of slow connections (this is a file archive
serving DVD-images etc) processes can add up.
The scoreboard can look like this after a while:
----------8<----------------
PID Connections Threads Async connections
total accepting busy idle writing keep-alive closing
14465 94 no 0 0 72 0 21
28881 132 yes 0 0 79 0 6
23632 582 no 0 0 523 0 51
32314 43 no 0 0 28 0 15
13766 577 no 0 0 564 1 2
337 42 no 0 0 28 0 13
19580 39 no 0 0 27 0 12
30603 478 no 0 0 424 0 52
32163 177 no 0 0 136 0 24
16159 429 no 0 0 374 0 54
15376 93 no 0 0 45 0 47
32478 124 no 0 0 86 0 38
30604 395 yes 2 48 390 3 0
30667 61 no 0 0 38 0 17
31569 58 no 0 0 27 0 20
19614 161 no 0 0 117 0 44
32286 253 yes 0 50 252 0 0
17643 454 yes 2 48 445 0 3
23353 49 no 0 0 27 2 20
31581 145 no 0 0 106 0 34
Sum 4386 4 146 3788 6 473
LGLGGGLLGLGLGLLLLLGLGLGLLLLLGLLLLLLLLLLLLLLGGGLGLLGGGGLGGLGGGGGG
GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGLGGGGGGGGGGGGGGGGGGGGGGGGG
GGGGGGGGGLGLGGGGGLGLLGGGLGLLLLLLGGGLLLLLGGLGLGLLLGGGLGLLLGLGLLGL
LGGLLLLGGGGGGLGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGLGL
GGLLGGGLLGGLGLGGGGGLLGGGGLGLLLLLLGGGGGLGGGGGGLLLLLGLLLGLLLLLLLGL
LLLGLLLGLGLGGGLGLGGGGLLGLGGLLLGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG
GLGGGGGGGGGGGGGGGGGGGGGGGGGLGGGGGGGGGGGGLGGGGGGGGGGGGGGGGGGGGGGG
GGLLLLLGLLLLGLLLLGLGLLLLGGLGLLLLLGLLGLLLLLLLLLLGGLLLGLGGGGGGGGGG
GGGGLGGGGLGGGLGGGGGGGLGGGGGGGGGGGGGGGGGGGGLGGGGGLLGGGGLLGGGLGLLG
GGGLGGLLGGGGLGGLGGLGLGGL____________________WW__________________
__________GGGGGGGGGGGGGGGGGGGGGGGGGGLGGLGLGGGGGGGGGGGGGGGGGGLLGG
LGLLGLGLGGGLLGLGGLLLLGLGGGLGLLGGLGLLGLGLLGLGGGLGGGGGGGGGGGGGLGGG
GLGGLGGGGGLGGGGGGGGGGLGLGGLLGLGG________________________________
____________________W___W_______________________________________
____GLGLLLLLLLGGGLLGGLLLGGLLLLLLGGLGLLGGLLGGGGLGLLLGGGLLGGLGLGGG
LLGLGGLLLLGLGLLGGGGGGLLGGGGGGLLGGGGLGLGL
----------8<----------------
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