[Spread-users] Spread eating 90% of CPU

Peter Spreadborough pspreadborough at revasystems.com
Thu May 26 10:13:36 EDT 2005


Spread Users,

I have now seen two instances of Spread on one machine continuously
burning 90% of the CPU. This state does not readily occur, only after
several hours of very heavy machine use (Note that Spread is running
with a higher priority than all other applications on the same machine
but spurious disconnects still occasionally occur). Once in this state
Spread must be stopped and re-started to recover. The following
spmonitor output shows that machine prfx9 is incrementing the "rounds"
counter by 100s of 1000s per status query. Has anyone else experienced
such behavior or have a fix for this?

Thanks,

Pete


Monitor> Monitor: send status query

============================
Status at prfx9 V 3.17. 3 (state 6, gstate 1) after 85711 seconds :
Membership  :  2  procs in 1 segments, leader is prfx9
rounds   : -1219804354  tok_hurry : 1254734     memb change:       7
sent pack: 10914236     recv pack : 3819298     retrans    :   13134
u retrans:   13134      s retrans :       0     b retrans  :       0
My_aru   : 3119900      Aru       : 3119900     Highest seq: 3119894
Sessions :       5      Groups    :       6     Window     :      60
Deliver M: 2366292      Deliver Pk: 14847341    Pers Window:      15
Delta Mes: -3829347     Delta Pack: -14567869   Delta sec  :    3919
==================================

Monitor> 
============================
Status at prfx8 V 3.17. 3 (state 1, gstate 1) after 81802 seconds :
Membership  :  1  procs in 1 segments, leader is prfx8
rounds   : 20914354     tok_hurry : 5012211     memb change:       4
sent pack: 20917475     recv pack : 9520677     retrans    :    1307
u retrans:    1307      s retrans :       0     b retrans  :       0
My_aru   : 17691521     Aru       : 17691521    Highest seq: 17691521
Sessions :       5      Groups    :       6     Window     :      60
Deliver M: 6196295      Deliver Pk: 30532096    Pers Window:      15
Delta Mes: 3830003      Delta Pack: 14571621    Delta sec  :   -3909
==================================

Monitor> Monitor: send status query

============================
Status at prfx9 V 3.17. 3 (state 6, gstate 1) after 85721 seconds :
Membership  :  2  procs in 1 segments, leader is prfx9
rounds   : -1219319569  tok_hurry : 1254734     memb change:       7
sent pack: 10914236     recv pack : 3819298     retrans    :   13134
u retrans:   13134      s retrans :       0     b retrans  :       0
My_aru   : 3119900      Aru       : 3119900     Highest seq: 3119894
Sessions :       5      Groups    :       6     Window     :      60
Deliver M: 2366292      Deliver Pk: 14847341    Pers Window:      15
Delta Mes: -3830003     Delta Pack: -14571621   Delta sec  :    3919
==================================

Monitor> 
============================
Status at prfx8 V 3.17. 3 (state 1, gstate 1) after 81812 seconds :
Membership  :  1  procs in 1 segments, leader is prfx8
rounds   : 20916345     tok_hurry : 5012704     memb change:       4
sent pack: 20919682     recv pack : 9520677     retrans    :    1307
u retrans:    1307      s retrans :       0     b retrans  :       0
My_aru   : 17693728     Aru       : 17693728    Highest seq: 17693728
Sessions :       5      Groups    :       6     Window     :      60
Deliver M: 6196806      Deliver Pk: 30534303    Pers Window:      15
Delta Mes: 3830514      Delta Pack: 14573828    Delta sec  :   -3909
==================================







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