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qmemman: in is_balance_req_significant(), account for Xen free memory

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This commit is contained in:
Rafal Wojtczuk 2010-09-16 16:00:07 +02:00
parent e476531b0e
commit eea01fba3b
1 changed files with 3 additions and 3 deletions
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6
dom0/qmemman/qmemman.py
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@ -99,7 +99,7 @@ class SystemState:
qmemman_algo.refresh_meminfo_for_domain(self.domdict[domid], val) qmemman_algo.refresh_meminfo_for_domain(self.domdict[domid], val)
self.do_balance() self.do_balance()
def is_balance_req_significant(self, memset_reqs): def is_balance_req_significant(self, memset_reqs, xenfree):
total_memory_transfer = 0 total_memory_transfer = 0
MIN_TOTAL_MEMORY_TRANSFER = 150*1024*1024 MIN_TOTAL_MEMORY_TRANSFER = 150*1024*1024
MIN_MEM_CHANGE_WHEN_UNDER_PREF = 15*1024*1024 MIN_MEM_CHANGE_WHEN_UNDER_PREF = 15*1024*1024
@ -112,7 +112,7 @@ class SystemState:
if last_target > 0 and last_target < pref and memory_change > MIN_MEM_CHANGE_WHEN_UNDER_PREF: if last_target > 0 and last_target < pref and memory_change > MIN_MEM_CHANGE_WHEN_UNDER_PREF:
print 'dom', dom, 'is below pref, allowing balance' print 'dom', dom, 'is below pref, allowing balance'
return True return True
return total_memory_transfer > MIN_TOTAL_MEMORY_TRANSFER return total_memory_transfer + abs(xenfree - self.XEN_FREE_MEM_LEFT) > MIN_TOTAL_MEMORY_TRANSFER
def print_stats(self, xenfree, memset_reqs): def print_stats(self, xenfree, memset_reqs):
for i in self.domdict.keys(): for i in self.domdict.keys():
@ -126,7 +126,7 @@ class SystemState:
self.refresh_memactual() self.refresh_memactual()
xenfree = self.get_free_xen_memory() xenfree = self.get_free_xen_memory()
memset_reqs = qmemman_algo.balance(xenfree - self.XEN_FREE_MEM_LEFT, self.domdict) memset_reqs = qmemman_algo.balance(xenfree - self.XEN_FREE_MEM_LEFT, self.domdict)
if not self.is_balance_req_significant(memset_reqs): if not self.is_balance_req_significant(memset_reqs, xenfree):
return return
self.print_stats(xenfree, memset_reqs) self.print_stats(xenfree, memset_reqs)