[Pgpool-general] 3.0.1 memory leaks?

[Glyn Astill]

Hi Guys,

Yesterday I deployed 3.0.1 to one of our connection pool servers, however the machine appears to have crashed after running out of memory.

I've just run a simple test here, with pgpool in raw mode. All I've done is write a program to connect, prepare, execute and deallocate a statement over and over in a loop.  The program has been running for about hour and the child pgpool process is using 600Mb of memory and increasing (see below).

Any ideas how to track this down?

Thanks
Glyn

Way5-pool:/var/log# cat /proc/2885/status
Name:   pgpool
State:  S (sleeping)
Tgid:   2885
Pid:    2885
PPid:   2852
TracerPid:      0
Uid:    1000    1000    1000    1000
Gid:    1       1       1       1
FDSize: 64
Groups: 1
VmPeak:   629344 kB
VmSize:   629344 kB
VmLck:         0 kB
VmHWM:    561736 kB
VmRSS:    561736 kB
VmData:   560780 kB
VmStk:        88 kB
VmExe:       824 kB
VmLib:      6840 kB
VmPTE:      1224 kB
Threads:        1
SigQ:   0/16375
SigPnd: 0000000000000000
ShdPnd: 0000000000000000
SigBlk: 0000000000000000
SigIgn: 0000000000003000
SigCgt: 0000000180004a07
CapInh: 0000000000000000
CapPrm: 0000000000000000
CapEff: 0000000000000000
CapBnd: ffffffffffffffff
Cpus_allowed:   0000000f
Cpus_allowed_list:      0-3
Mems_allowed:   00000000,00000003
Mems_allowed_list:      0-1
voluntary_ctxt_switches:        2314936
nonvoluntary_ctxt_switches:     77355