Upgrade 2.0.9 -> 2.2.3 Delayed Data Collection

[alien_luke]

Hello,

I have a zabbix server for monitoring network devices (mostly snmp v2c).

After the upgrade from 2.0.9 to 2.2.3 there is significant delay in data gathering (queue with many items and "holes" in the graphs).

Zabbix-server:
Debian 6 (Squeeze)
mysql 5.5.31

Zabbix server relevant config params:
StartPollers=150
Timeout=10
UnreachableDelay=15

The config parameters of the server remained unchanged after the upgrade.
Before the upgrade data gathering and queue length were minimum as seen from the images.

I've set the timeout to 25 sec and I've increased the number of pollers to 1000 but no significant differences were made. The only difference was made when UnreachableDelay was set to 5. In this case the number of NVPS processed by the server increased at half the requested NVPS.
When I set the pollers to 1000, i can see many errors in the server log for the snmp agent giving timeouts:

SNMP agent item "...." on host "....." failed: first network error, wait for 5 seconds

So I don't know if setting many pollers will help.

I know that the snmp polling algorithm changed in version 2.2 but as per my understanding, it should compensate for the response time of the devices.

https://www.zabbix.com/documentation/2.2/manual/config/items/itemtypes/snmp

But I cannot see this happening as the pollers take too much to get a response.

# ps aux | grep poller
root     24757  0.0  0.0  11724   876 pts/1    S+   11:07   0:00 grep poller
zabbix   29678  0.0  0.2 2601368 75860 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #1 [got 95 values in 5.409152 sec, getting values]
zabbix   29679  0.0  0.2 2601368 75444 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #2 [got 132 values in 27.107018 sec, getting values]
zabbix   29680  0.0  0.2 2601376 79148 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #3 [got 529 values in 4.171592 sec, getting values]
zabbix   29681  0.0  0.2 2601368 76040 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #4 [got 1 values in 25.022325 sec, getting values]
zabbix   29682  0.0  0.2 2601368 80964 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #5 [got 71 values in 25.719984 sec, getting values]
zabbix   29683  0.0  0.2 2601376 73880 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #6 [got 67 values in 25.691967 sec, getting values]
zabbix   29684  0.0  0.2 2601368 81008 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #7 [got 3 values in 25.134922 sec, getting values]
zabbix   29685  0.0  0.2 2601340 81768 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #8 [got 191 values in 28.401771 sec, getting values]
zabbix   29686  0.0  0.2 2601368 72800 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #9 [got 17 values in 27.203983 sec, getting values]
zabbix   29687  0.0  0.2 2601368 73912 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #10 [got 1 values in 25.008676 sec, getting values]
zabbix   29688  0.0  0.2 2601368 75116 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #11 [got 225 values in 29.431191 sec, getting values]
zabbix   29689  0.0  0.2 2601368 80936 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #12 [got 421 values in 5.386038 sec, getting values]
zabbix   29690  0.0  0.2 2601368 72444 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #13 [got 65 values in 8.163784 sec, getting values]
zabbix   29691  0.0  0.2 2601368 77696 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #14 [got 2 values in 25.201469 sec, getting values]
zabbix   29692  0.0  0.2 2601372 79036 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #15 [got 4 values in 25.318112 sec, getting values]
zabbix   29693  0.0  0.2 2601368 78616 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #16 [got 4 values in 25.384018 sec, getting values]
zabbix   29694  0.0  0.2 2601368 74468 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #17 [got 10 values in 25.562214 sec, getting values]
zabbix   29695  0.0  0.2 2601368 78528 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #18 [got 7 values in 25.935990 sec, getting values]
zabbix   29696  0.0  0.2 2601368 76888 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #19 [got 1 values in 25.024008 sec, getting values]
zabbix   29697  0.0  0.2 2601368 77504 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #20 [got 10 values in 26.047972 sec, getting values]
zabbix   29698  0.0  0.2 2601376 74852 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #21 [got 1 values in 25.023985 sec, getting values]
zabbix   29699  0.0  0.2 2601368 77712 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #22 [got 28 values in 26.407068 sec, getting values]
zabbix   29700  0.0  0.2 2601368 75976 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #23 [got 301 values in 28.847681 sec, getting values]
zabbix   29701  0.0  0.2 2601368 80064 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #24 [got 72 values in 26.171978 sec, getting values]
zabbix   29702  0.0  0.2 2601368 72736 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #25 [got 1 values in 25.024107 sec, getting values]
zabbix   29703  0.0  0.2 2601368 76024 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #26 [got 401 values in 4.644678 sec, getting values]
zabbix   29704  0.0  0.2 2601368 78688 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #27 [got 4 values in 25.251920 sec, getting values]
zabbix   29705  0.0  0.2 2601340 76896 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #28 [got 73 values in 26.131977 sec, getting values]
zabbix   29706  0.0  0.2 2601376 74368 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #29 [got 60 values in 26.892374 sec, getting values]
zabbix   29707  0.0  0.2 2601372 78184 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #30 [got 1 values in 25.024130 sec, getting values]
zabbix   29708  0.0  0.2 2601368 75936 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #31 [got 3 values in 25.077558 sec, getting values]
zabbix   29709  0.0  0.2 2601368 75676 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #32 [got 7 values in 25.929009 sec, getting values]
zabbix   29710  0.0  0.2 2601368 80060 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #33 [got 17 values in 27.200368 sec, getting values]
zabbix   29711  0.0  0.2 2601368 76148 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #34 [got 2 values in 25.073371 sec, getting values]
zabbix   29712  0.0  0.2 2601368 77676 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #35 [got 135 values in 29.467238 sec, getting values]
zabbix   29713  0.0  0.2 2601368 78912 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #36 [got 219 values in 5.037115 sec, getting values]
zabbix   29714  0.0  0.2 2601376 79928 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #37 [got 20 values in 27.399535 sec, getting values]
zabbix   29715  0.0  0.2 2601372 76568 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #38 [got 2 values in 25.065610 sec, getting values]
zabbix   29716  0.0  0.2 2601368 76936 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #39 [got 5 values in 25.313796 sec, getting values]
zabbix   29717  0.0  0.2 2601348 74468 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #40 [got 71 values in 25.723928 sec, getting values]
zabbix   29718  0.0  0.2 2601340 81548 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #41 [got 19 values in 27.379131 sec, getting values]
zabbix   29719  0.0  0.2 2601368 74828 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #42 [got 310 values in 4.804893 sec, getting values]
zabbix   29720  0.0  0.2 2601372 78048 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #43 [got 3 values in 25.377707 sec, getting values]
zabbix   29721  0.0  0.2 2601368 74492 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #44 [got 84 values in 26.618471 sec, getting values]
zabbix   29722  0.0  0.2 2601368 79572 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #45 [got 72 values in 26.120223 sec, getting values]
zabbix   29723  0.0  0.2 2601368 74440 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #46 [got 20 values in 25.345988 sec, getting values]
zabbix   29724  0.0  0.2 2601368 76160 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #47 [got 15 values in 26.157023 sec, getting values]
zabbix   29725  0.0  0.2 2601368 78008 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #48 [got 181 values in 27.390722 sec, getting values]
zabbix   29726  0.0  0.2 2601380 74032 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #49 [got 80 values in 27.975714 sec, getting values]
zabbix   29727  0.0  0.2 2601340 76196 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #50 [got 4 values in 25.384001 sec, getting values]
zabbix   29728  0.0  0.2 2601368 76804 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #51 [got 84 values in 5.151471 sec, getting values]
zabbix   29729  0.0  0.2 2601368 71628 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #52 [got 228 values in 28.097377 sec, getting values]
zabbix   29730  0.0  0.2 2601372 73632 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #53 [got 4 values in 25.607114 sec, getting values]
zabbix   29731  0.0  0.2 2601368 75756 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #54 [got 64 values in 27.943928 sec, getting values]
zabbix   29732  0.0  0.2 2601340 75404 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #55 [got 19 values in 27.274784 sec, getting values]
zabbix   29733  0.0  0.2 2601380 77832 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #56 [got 104 values in 28.444127 sec, getting values]
zabbix   29734  0.0  0.2 2601368 77988 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #57 [got 2 values in 25.220702 sec, getting values]
zabbix   29735  0.0  0.2 2601340 74556 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #58 [got 16 values in 27.090771 sec, getting values]
zabbix   29736  0.0  0.2 2601372 78420 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #59 [got 133 values in 27.160394 sec, getting values]
zabbix   29737  0.0  0.2 2601372 76596 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #60 [got 44 values in 5.661194 sec, getting values]
zabbix   29738  0.0  0.2 2601368 75284 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #61 [got 18 values in 27.323509 sec, getting values]
zabbix   29739  0.0  0.2 2601368 76540 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #62 [got 19 values in 27.268484 sec, getting values]
zabbix   29740  0.0  0.2 2601368 79464 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #63 [got 13 values in 26.222248 sec, getting values]
zabbix   29741  0.0  0.2 2601372 77092 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #64 [got 7 values in 25.927985 sec, getting values]
zabbix   29742  0.0  0.2 2601368 80076 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #65 [got 12 values in 26.303019 sec, getting values]
zabbix   29743  0.0  0.2 2601368 71376 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #66 [got 4 values in 25.607982 sec, getting values]
zabbix   29744  0.0  0.2 2601372 76632 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #67 [got 8 values in 25.955994 sec, getting values]
zabbix   29745  0.0  0.2 2601368 79512 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #68 [got 16 values in 27.072027 sec, getting values]
zabbix   29746  0.0  0.2 2601340 78356 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #69 [got 12 values in 26.302852 sec, getting values]
zabbix   29747  0.0  0.2 2601340 79052 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #70 [got 8 values in 25.874880 sec, getting values]
zabbix   29748  0.0  0.2 2601404 73780 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #71 [got 1 values in 25.024105 sec, getting values]
zabbix   29749  0.0  0.2 2601368 80720 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #72 [got 1 values in 25.024009 sec, getting values]
zabbix   29750  0.0  0.2 2601368 72908 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #73 [got 12 values in 25.992142 sec, getting values]
zabbix   29751  0.0  0.2 2601368 77520 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #74 [got 174 values in 28.506077 sec, getting values]
zabbix   29752  0.0  0.2 2601340 78204 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #75 [got 119 values in 4.439380 sec, getting values]
zabbix   29753  0.0  0.2 2601368 75088 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #76 [got 1 values in 25.023993 sec, getting values]
zabbix   29754  0.0  0.2 2601376 73076 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #77 [got 5 values in 25.422323 sec, getting values]
zabbix   29755  0.0  0.2 2601368 74124 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #78 [got 7 values in 25.930584 sec, getting values]
zabbix   29756  0.0  0.2 2601376 78932 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #79 [got 7 values in 25.932456 sec, getting values]
zabbix   29757  0.0  0.2 2601368 75800 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #80 [got 415 values in 4.639570 sec, getting values]
zabbix   29758  0.0  0.2 2601340 76724 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #81 [got 2 values in 25.088006 sec, getting values]
zabbix   29759  0.0  0.2 2601368 74680 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #82 [got 69 values in 25.687889 sec, getting values]
zabbix   29760  0.0  0.2 2601368 76912 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #83 [got 1 values in 25.024015 sec, getting values]
zabbix   29761  0.0  0.2 2601368 79228 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #84 [got 264 values in 28.093224 sec, getting values]
zabbix   29762  0.0  0.2 2601368 79324 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #85 [got 487 values in 28.042896 sec, getting values]
zabbix   29763  0.0  0.2 2601368 73816 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #86 [got 197 values in 28.543580 sec, getting values]
zabbix   29764  0.0  0.2 2601376 72656 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #87 [got 142 values in 26.154294 sec, getting values]
zabbix   29765  0.0  0.2 2601368 76212 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #88 [got 97 values in 29.451455 sec, getting values]
zabbix   29766  0.0  0.2 2601368 74692 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #89 [got 59 values in 25.333790 sec, getting values]
zabbix   29767  0.0  0.2 2601368 77656 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #90 [got 141 values in 26.115737 sec, getting values]
zabbix   29768  0.0  0.2 2601380 74748 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #91 [got 384 values in 8.227161 sec, getting values]
zabbix   29769  0.0  0.2 2601368 73708 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #92 [got 45 values in 4.731876 sec, getting values]
zabbix   29770  0.0  0.2 2601368 78288 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #93 [got 31 values in 27.407988 sec, getting values]
zabbix   29771  0.0  0.2 2601368 78600 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #94 [got 1 values in 25.023997 sec, getting values]
zabbix   29772  0.0  0.2 2601368 72024 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #95 [got 72 values in 25.753291 sec, getting values]
zabbix   29773  0.0  0.2 2601368 78640 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #96 [got 1 values in 25.022309 sec, getting values]
zabbix   29774  0.0  0.2 2601368 77164 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #97 [got 1 values in 25.023467 sec, getting values]
zabbix   29775  0.0  0.2 2601368 77640 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #98 [got 15 values in 25.750911 sec, getting values]
zabbix   29776  0.0  0.2 2601376 76836 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #99 [got 1 values in 25.023237 sec, getting values]
zabbix   29777  0.0  0.2 2601368 79236 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #100 [got 44 values in 5.286747 sec, getting values]
zabbix   29778  0.0  0.2 2601368 85036 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #101 [got 203 values in 29.506597 sec, getting values]
zabbix   29779  0.0  0.2 2601340 73832 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #102 [got 12 values in 26.683961 sec, getting values]
zabbix   29780  0.0  0.2 2601368 81692 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #103 [got 2 values in 25.079679 sec, getting values]
zabbix   29781  0.0  0.2 2601368 81392 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #104 [got 22 values in 27.632535 sec, getting values]
zabbix   29782  0.0  0.2 2601368 79588 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #105 [got 136 values in 29.282882 sec, getting values]
zabbix   29783  0.0  0.2 2601372 77580 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #106 [got 1 values in 25.024095 sec, getting values]
zabbix   29784  0.0  0.2 2601368 73240 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #107 [got 2 values in 25.207983 sec, getting values]
zabbix   29785  0.0  0.2 2601368 79424 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #108 [got 10 values in 26.120620 sec, getting values]
zabbix   29786  0.0  0.2 2601368 77580 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #109 [got 79 values in 26.884030 sec, getting values]
zabbix   29787  0.0  0.2 2601376 77172 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #110 [got 9 values in 25.994838 sec, getting values]
zabbix   29788  0.0  0.2 2601340 76848 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #111 [got 12 values in 26.304639 sec, getting values]
zabbix   29789  0.0  0.2 2601368 75084 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #112 [got 183 values in 4.982501 sec, getting values]
zabbix   29790  0.0  0.2 2601368 79792 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #113 [got 384 values in 4.148028 sec, getting values]
zabbix   29791  0.0  0.2 2601368 80280 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #114 [got 9 values in 25.260300 sec, getting values]
zabbix   29802  0.0  0.2 2601368 79288 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #115 [got 117 values in 27.588476 sec, getting values]
zabbix   29805  0.0  0.2 2601368 79320 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #116 [got 108 values in 5.151323 sec, getting values]
zabbix   29810  0.0  0.2 2601368 80496 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #117 [got 72 values in 26.119959 sec, getting values]
zabbix   29812  0.0  0.2 2601368 71356 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #118 [got 21 values in 27.591971 sec, getting values]
zabbix   29816  0.0  0.2 2601368 76580 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #119 [got 1 values in 25.023995 sec, getting values]
zabbix   29817  0.0  0.2 2601368 78652 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #120 [got 59 values in 26.004723 sec, getting values]
zabbix   29818  0.0  0.2 2601372 73916 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #121 [got 76 values in 25.723977 sec, getting values]
zabbix   29819  0.0  0.2 2601340 76140 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #122 [got 268 values in 4.969588 sec, getting values]
zabbix   29820  0.0  0.2 2601368 75008 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #123 [got 227 values in 8.336430 sec, getting values]
zabbix   29821  0.0  0.2 2601372 81672 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #124 [got 21 values in 27.595173 sec, getting values]
zabbix   29822  0.0  0.2 2601368 79596 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #125 [got 22 values in 27.626699 sec, getting values]
zabbix   29823  0.0  0.2 2601376 77320 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #126 [got 10 values in 25.300086 sec, getting values]
zabbix   29824  0.0  0.2 2601368 77796 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #127 [got 239 values in 6.425463 sec, getting values]
zabbix   29825  0.0  0.2 2601368 76348 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #128 [got 17 values in 25.344422 sec, getting values]
zabbix   29826  0.0  0.2 2601368 79240 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #129 [got 8 values in 25.882077 sec, getting values]
zabbix   29827  0.0  0.2 2601368 79776 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #130 [got 101 values in 5.002181 sec, getting values]
zabbix   29828  0.0  0.2 2601368 77764 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #131 [got 120 values in 26.292543 sec, getting values]
zabbix   29829  0.0  0.2 2601368 75128 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #132 [got 1 values in 25.023985 sec, getting values]
zabbix   29830  0.0  0.2 2601368 77468 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #133 [got 2 values in 25.189928 sec, getting values]
zabbix   29831  0.0  0.2 2601368 76012 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #134 [got 98 values in 27.094974 sec, getting values]
zabbix   29832  0.0  0.2 2601368 79588 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #135 [got 1 values in 25.023996 sec, getting values]
zabbix   29833  0.0  0.2 2601340 79528 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #136 [got 12 values in 26.305506 sec, getting values]
zabbix   29834  0.0  0.2 2601368 80872 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #137 [got 308 values in 4.850331 sec, getting values]
zabbix   29835  0.0  0.2 2601368 73472 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #138 [got 23 values in 27.647726 sec, getting values]
zabbix   29836  0.0  0.2 2601368 75236 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #139 [got 15 values in 26.167971 sec, getting values]
zabbix   29837  0.0  0.2 2601368 80672 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #140 [got 91 values in 27.444205 sec, getting values]
zabbix   29838  0.0  0.2 2601368 76496 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #141 [got 4 values in 25.391306 sec, getting values]
zabbix   29839  0.0  0.2 2601368 76068 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #142 [got 8 values in 25.989331 sec, getting values]
zabbix   29840  0.0  0.2 2601340 75904 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #143 [got 12 values in 26.306047 sec, getting values]
zabbix   29841  0.0  0.2 2601368 77240 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #144 [got 334 values in 7.550367 sec, getting values]
zabbix   29842  0.0  0.2 2601368 76332 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #145 [got 48 values in 25.691319 sec, getting values]
zabbix   29843  0.0  0.2 2601368 76916 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #146 [got 7 values in 25.931988 sec, getting values]
zabbix   29844  0.0  0.2 2601372 80080 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #147 [got 155 values in 26.930949 sec, getting values]
zabbix   29845  0.0  0.2 2601368 78308 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #148 [got 322 values in 27.033743 sec, getting values]
zabbix   29846  0.0  0.2 2601368 80680 ?       S    08:29   0:03 /usr/sbin/zabbix_server: poller #149 [got 72 values in 28.800525 sec, getting values]
zabbix   29847  0.0  0.2 2601368 73104 ?       S    08:29   0:02 /usr/sbin/zabbix_server: poller #150 [got 198 values in 28.483107 sec, getting values]

So anybody has any ideas about this? Did somebody else saw this happening in their configuration?

[alien_luke]

Hello,

Does anyone have any thoughts regarding this issue? Are there any other tweaks that can be made to improve data collection?

I see myself in the situation where I have to create several proxies in order to resume normal data collection. But this is not a solution, only a workaround. I would like to find out the root cause for this.
Before the upgrade the server was more than capable of collecting the snmp data by itself reaching the ~2K required NVPS.

Any ideas will be appreciated.

[dziadzi]

Hello,

I can only say that I have the same issue after upgrading from 2.2.2 to 2.2.3

No solution till now....

[defter]

I've got same problem after 2.2.2 -> 2.2.3 upgrade.

My config:

Number of hosts (monitored/not monitored/templates)	1866	1832 / 1 / 33
Number of items (monitored/disabled/not supported)	62425	61739 / 566 / 120
Number of triggers (enabled/disabled) [problem/ok]	27550	27150 / 400 [315 / 26835]

StartPollers=60
StartPollersUnreachable=15
StartPingers=16
StartDiscoverers=4
CacheSize=512M
HistoryCacheSize=128M
TrendCacheSize=128M
HistoryTextCacheSize=64M
ValueCacheSize=64M
Timeout=5

Queue with 2.2.2 was about 50-100 in 5-10 sec. And grew to about 10K in 1 min. with 2.2.3.
NVPS consequently dropped from 260 to 130.
Pollers busy grew from 20 to 60 (100%). Increasing number of pollers to 500 made no difference (100% busy, same queue).
Other processes seems to work fine and load on them didn't changed.

After downgrade to 2.2.2 everything returnd to normal.

Today tried 2.2.2 -> 2.2.4 upgrade. Got same results as with 2.2.3.

Is that problem caused by https://support.zabbix.com/browse/ZBXNEXT-98?

Or any other suggestions on the cause or how to avoid that problem with new(2.2.3, 2.2.4) versions are much appreciated.

P.S. I can provide any needed information to help resolving that problem.