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From bugzi...@apache.org
Subject [Bug 53555] Scoreboard full error with event/ssl
Date Thu, 07 Apr 2016 14:36:03 GMT
https://bz.apache.org/bugzilla/show_bug.cgi?id=53555

--- Comment #38 from Mike Williams <mike.williams@comodo.com> ---
(In reply to Thierry Bastian from comment #33)
> WE got into a situation where the users of our product were stuck with G.
> We've got severe performance issues in those cases. We've tried patch
> https://bz.apache.org/bugzilla/attachment.cgi?id=33158&action=diff on a
> couple of installs and it made things much much better. On one install it
> would get stuck with 2000 clients coming in at roughly the same time. Now it
> can handle 10K gracefully.
> Hope that helps.


I've been trying that today after an update from 2.2.something to 2.4.18.
Still get the "scoreboard is full, ..." error though.


One server looks like this when emitting the "scoreboard is full, ..." error, a
few moments before becoming entirely unresponsive.


179 requests currently being processed, 461 idle workers
PID    Connections    Threads    Async connections
total    accepting    busy    idle    writing    keep-alive    closing
25580    205    no    15    49    0    147    44
21331    293    no    0    0    0    0    292
19389    1    yes    0    0    0    0    0
25924    164    no    12    52    0    151    0
23217    432    no    15    49    0    146    270
23361    457    no    18    46    0    140    298
24175    458    no    13    51    0    149    297
20428    246    yes    0    0    0    0    244
21641    439    no    17    47    0    145    283
21739    435    no    16    48    0    143    277
23506    448    no    18    46    0    139    293
26180    30    yes    41    23    0    3    0
20174    2    no    0    0    0    0    1
20527    209    no    0    0    0    0    208
22470    448    no    14    50    0    149    287
20551    209    no    0    0    0    0    209
Sum    4476         179    461    0    1312    3003

R_R_R______R_R___R_________W_______R__R_R_WR________R__R___R____
GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG
GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG
______W_R_R____R__R__R________________R__RR________R_____R_R____
___R_RR________WRR____R__R_R______R__________WR______R____R___R_
R________R______RR__R__RR___R______RR___RRR______R__R___RR_R____
RR______________W__R_______R_________R_____RRW_____R____RWR_____
GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG
_____R___R_____R_R_R_RR_R___R_W_R__R__R___R______R____R_R_______
R______RR__R_R__RR_________R____R___R___RRR________R_______R___R
_________R__RR_______RR__R___R___R_____RRR____R_R_RR___R____R_W_
R___R_RRW___RRRR_RRRRRRRR_WRR_RR_RRRRRRRRRRRRRR__RRRRR__________
GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG
GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG
_____W______R__R____R_________R_____R_RWR_RR_R_______R____R_____
GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG


Shortly afterwards all the Gs are cleared and it gets back to doing useful work
for a while.
Sometimes "a while" can be 15 minutes, other times less than 1 second.

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