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Problem IT20075
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Status: Geschlossen |
RSS PRIMARY SERVER CAN HANG/LOCK UP WITH RSS_SEND/RSS_RECV THREADS SPINNING ON THE BACKLOGWAITLOCK SPIN LOCK
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| Produkt: |
INFORMIX SERVER / 5725A3900 / C10 - IDS 12.10 |
| Problembeschreibung: |
This is the same problem as APAR IC78772. The primary can hang
running constantly on the cpu vps trying to acquire a spin lock.
Both RSS_Send and RSS_recv threads can hang. The RSS_Send will
wait on spin lock in getPagesFromCache() and RSS_Recv in
cloneSourceRecvThread(). The thread holding the backlogWaitLock
spin lock will have a stack like:
yield_processor_mvp()
mt_lock_wait()
mt_lock()
cloneCacheLogPageInt()
cloneCacheInt()
cloneCacheLogPage()
logwrite()
log_put()
logm_write()
logputx()
rscommit()
iscommit()
sqiscommit()
sqcommit()
aud_sqcommit()
sql_commit()
sq_commit()
sqmain()
listen_verify()
spawn_thread()
th_init_initgls()
startup()
The defect occurs with 1 or 2 CPU VPs. Since the threads are
running constantly in the CPU VPs, the sqlexec thread cannot
continue even if the mutex is already free. |
| Problem-Zusammenfassung: |
****************************************************************
* USERS AFFECTED: *
* All users *
****************************************************************
* PROBLEM DESCRIPTION: *
* See Error Description *
****************************************************************
* RECOMMENDATION: *
* Update to IBM Informix Server 12.10.xC9 *
**************************************************************** |
| Local-Fix: |
Configure 3 or more CPU VPs. |
| Lösung |
|
| Workaround |
keiner bekannt / siehe Local-Fix |
| Weitere Daten |
Datum - Problem gemeldet :
Datum - Problem geschlossen :
Datum - der letzten Änderung:
| 05.04.2017
10.07.2017
10.07.2017 |
| Problem behoben ab folgender Versionen (IBM BugInfos) |
12.10.xC9
|
| Problem behoben lt. FixList in der Version |
