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Added periodic idmapper cache size check along with conditional flush mechanism. Ran a lot of tests and stress tests to get statistics on usage.

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This commit is contained in:
Griatch 2014-05-18 18:28:10 +02:00
parent a143733ccf
commit f2c75bd0f6
8 changed files with 145 additions and 33 deletions
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22
src/scripts/scripts.py
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@ -19,8 +19,6 @@ __all__ = ["Script", "DoNothing", "CheckSessions",
_GA = object.__getattribute__
_SESSIONS = None
# attr-cache size in MB
_ATTRIBUTE_CACHE_MAXSIZE = settings.ATTRIBUTE_CACHE_MAXSIZE
class ExtendedLoopingCall(LoopingCall):
"""
@ -155,7 +153,7 @@ class ScriptBase(TypeClass):
def _step_errback(self, e):
"callback for runner errors"
cname = self.__class__.__name__
estring = _("Script %(key)s(#%(dbid)i) of type '%(cname)s': at_repeat() error '%(err)s'.") % \
estring = _("Script %(key)s(#%(dbid)s) of type '%(cname)s': at_repeat() error '%(err)s'.") % \
{"key": self.key, "dbid": self.dbid, "cname": cname,
"err": e.getErrorMessage()}
try:
@ -538,6 +536,24 @@ class CheckSessions(Script):
#print "ValidateSessions run"
_SESSIONS.validate_sessions()
_FLUSH_CACHE = None
_IDMAPPER_CACHE_MAX_MEMORY = settings.IDMAPPER_CACHE_MAXSIZE
class ValidateIdmapperCache(Script):
"""
Check memory use of idmapper cache
"""
def at_script_creation(self):
self.key = "sys_cache_validate"
self.desc = _("Restrains size of idmapper cache.")
self.interval = 61 * 5 # staggered compared to session check
self.persistent = True
def at_repeat(self):
"Called every ~5 mins"
global _FLUSH_CACHE
if not _FLUSH_CACHE:
from src.utils.idmapper.base import conditional_flush as _FLUSH_CACHE
_FLUSH_CACHE(_IDMAPPER_CACHE_MAX_MEMORY)
class ValidateScripts(Script):
"Check script validation regularly"