Informix - Problem description
Problem IT31865 | Status: Closed |
PERIODIC THREAD CAN SEGV CALLING MT_FAST_CLOCK IN BFFINDFREE WHEN LRUS ARE NOT SPECIFIED IN BUFFERPOOL ONCONFIG PARAM | |
product: | |
INFORMIX SERVER / 5725A3900 / C10 - IDS 12.10 | |
Problem description: | |
The following assert was reported in 12.10.UC9 on linux32 11:48:06 Stack for thread: 20 periodic base: 0x4673a000 len: 69632 pc: 0x08dd9509 tos: 0x46749b80 state: running vp: 1 afstack mt_ex_throw_sig afsig_handler mt_fast_clock bffindfree buffget getpage allocpage lic_init lic_check_info periodic_thread th_init_initgls startup This problem occurs when the BUFFERPOOL is configured without an lrus parameter like: BUFFERPOOL default,memory='auto' BUFFERPOOL size=2k,memory=500MB The failure can happen on a 32-bit system if the machine has more than 64 cpus and on a 64-bit system if the machine has more than 256 cpus. | |
Problem Summary: | |
**************************************************************** * USERS AFFECTED: * * Users of Informix Server prior to 12.10.xC14. * **************************************************************** * PROBLEM DESCRIPTION: * * See Error Description * **************************************************************** * RECOMMENDATION: * * Update to Informix Server 12.10.xC14. * **************************************************************** | |
Local Fix: | |
Configure a bufferpool with an 'lrus' setting like: BUFFERPOOL size=2k,buffers=250000,lrus=128,lru_min_dirty=50,lru_max_dirty=6 0 | |
Solution | |
Workaround | |
**************************************************************** * USERS AFFECTED: * * Users of Informix Server prior to 12.10.xC14. * **************************************************************** * PROBLEM DESCRIPTION: * * See Error Description * **************************************************************** * RECOMMENDATION: * * Update to Informix Server 12.10.xC14. * **************************************************************** | |
Comment | |
Update to Informix Server 12.10.xC14. | |
Timestamps | |
Date - problem reported : Date - problem closed : Date - last modified : | 13.02.2020 04.03.2020 04.03.2020 |
Problem solved at the following versions (IBM BugInfos) | |
12.10.xC14 | |
Problem solved according to the fixlist(s) of the following version(s) |