|
Problem IT33079
|
Status: Closed |
ASSERT FAILED: YIELD_PROCESSOR: CONDITIONAL LATCH COUNT NON-ZEROPOSSIBLE WHEN ALRM_ALL_EVENTS SET TO 1
|
| product: |
INFORMIX SERVER / 5725A3900 / C10 - IDS 12.10 |
| Problem description: |
Server can abort with the following assertion:
08:18:37 Assert Failed: yield_processor: Conditional latch
count non-zero in thread 66
08:18:37 Who: Session(32, user@host, 29636, 0x46649cd8)
Thread(66, sqlexec, 46606388, 8)
File: mt_fn.c Line: 17634
Stack of the assertion thread:
afhandler
afcrash_interface
yield_processor_mvp
mt_lock_wait
mt_lock_helper
mt_lock
ph_wakeup
ph_submit_task
ph_alarm_post
invoke_alarmf
mt_sysmsg_body
mt_sysmsg
mt_logprintf
adjust_lru_flushing
bffindfree
buffget
find_page
rsread
rsdbopen
isdbopen
ddopen
dbopen
find_db
qopendb
excommand
sq_execute
sqmain
spawn_thread
th_init_initgls
startup
The critical portion of the stack is the
buffget/bffindfree/adjust_lru_flushing. If the server gets into
that code path, and ALRM_ALL_EVENTS is set to 1, it's possible
that the assertion could happen once it gets down to the
ph_wakeup level. It won't always happen, but it's possible.
The adjust_lru_flushing function would place something like the
following message into the MSGPATH file:
08:02:01 Adjusting LRU for bufferpool - id 0 size 2k
08:02:03 Old max 60.0 min 50.0 New max 59.4 min 49.5 |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* Users of Informix Server prior to 12.10.xC15 and 14.10.xC7. *
****************************************************************
* PROBLEM DESCRIPTION: *
* See Error Description *
****************************************************************
* RECOMMENDATION: *
* Upgrade to Informix Server 12.10.xC15 or 14.10.xC7 (when *
* available). *
**************************************************************** |
| Local Fix: |
|
| Solution |
|
| Workaround |
****************************************************************
* USERS AFFECTED: *
* Users of Informix Server prior to 12.10.xC15 and 14.10.xC7. *
****************************************************************
* PROBLEM DESCRIPTION: *
* See Error Description *
****************************************************************
* RECOMMENDATION: *
* Upgrade to Informix Server 12.10.xC15 or 14.10.xC7 (when *
* available). *
**************************************************************** |
| Comment |
Fixed in Informix Server 12.10.xC15 and 14.10.xC7. |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 04.06.2020
26.08.2021
26.08.2021 |
| Problem solved at the following versions (IBM BugInfos) |
|
| Problem solved according to the fixlist(s) of the following version(s) |
