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Add temp_file_limit GUC parameter to constrain temporary file space usage.

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The limit is enforced against the total amount of temp file space used by
each session.

Mark Kirkwood, reviewed by Cédric Villemain and Tatsuo Ishii
This commit is contained in:
Tom Lane
2011-07-17 14:19:31 -04:00
parent 1bc16a9460
commit 23e5b16c71
7 changed files with 122 additions and 14 deletions
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15
src/backend/utils/misc/guc.c
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@ -425,6 +425,8 @@ int log_min_duration_statement = -1;
int log_temp_files = -1;
int trace_recovery_messages = LOG;
int temp_file_limit = -1;
int num_temp_buffers = 1024;
char *data_directory;
@ -535,6 +537,8 @@ const char *const config_group_names[] =
gettext_noop("Resource Usage"),
/* RESOURCES_MEM */
gettext_noop("Resource Usage / Memory"),
/* RESOURCES_DISK */
gettext_noop("Resource Usage / Disk"),
/* RESOURCES_KERNEL */
gettext_noop("Resource Usage / Kernel Resources"),
/* RESOURCES_VACUUM_DELAY */
@ -1693,6 +1697,17 @@ static struct config_int ConfigureNamesInt[] =
check_max_stack_depth, assign_max_stack_depth, NULL
},
{
{"temp_file_limit", PGC_SUSET, RESOURCES_DISK,
gettext_noop("Limits the total size of all temp files used by each session."),
gettext_noop("-1 means no limit."),
GUC_UNIT_KB
},
&temp_file_limit,
-1, -1, INT_MAX,
NULL, NULL, NULL
},
{
{"vacuum_cost_page_hit", PGC_USERSET, RESOURCES_VACUUM_DELAY,
gettext_noop("Vacuum cost for a page found in the buffer cache."),