the same data set consume double memory on head than 64fb76fbfb68285c35802b33cdf3da99a293fb95

[amutu]

on head(version 1.0.5),the cs used ~8GB while on 64fb76fbfb68285c35802b33cdf3da99a293fb95 used ~3.2GB,may be memory leak?

select crashlog_load(filter := $$logtime >= '2014-04-11' and logtime < '2014-04-12'$$);

crashlog_load

  30998550

(1 row)

select cs_used_memory();

cs_used_memory

 7971627008

(1 row)

on commit 64fb76fbfb68285c35802b33cdf3da99a293fb95: select crashlog_load(filter := $$logtime >= '2014-04-11' and logtime < '2014-04-12'$$);

crashlog_load

  30998550

(1 row)

select cs_used_memory();

cs_used_memory

 3209568256

(1 row)

imcs configuration: imcs.trace = on imcs.shmem_size = 40960 imcs.substitute_nulls = on imcs.autoload = off imcs.dictionary_size = 0

[knizhnik]

May be it is because of switched off RLE compression? In previous version it was enabled by default.

[amutu]

it looks like the imcs.use_rle = on in the postgresql.conf do not take effect: => show imcs.use_rle;

imcs.use_rle

on (1 row)

weixin_online_client_crash=> set work_mem to '10GB'; SET => select crashlog_load(filter := $$logtime >= '2014-04-11' and logtime < '2014-04-12'$$);

crashlog_load

  30998550

(1 row)

=> select cs_used_memory();

cs_used_memory

 7971627008

(1 row)

[amutu]

if I change the code: bool imcs_use_rle = false; to bool imcs_use_rle = true;

and set imcs.use_rle=on in postgresql.conf the memory used reduce to 3GB

if I comment the imcs.use_rle=on in postgresql.conf,then => show imcs.use_rle;
ERROR: unrecognized configuration parameter "imcs.use_rle"

[knizhnik]

Sorry, imcs.use_rle option was occasionally placed inside #ifdef IMCS_DISK_SUPPORT branch. Fixed.