[CA-121427] MetricUpdater threading/locking model is broken (making plan in CP-6997) -- Fixed possible threading issues, improved performance
[CA-121427] MetricUpdater threading/locking model is broken (making plan in CP-6997) -- Fixed possible threading issues, improved performance

Signed-off-by: Gabor Apati-Nagy <fea1aad7ceb67d3aeb88acb6b51e51467c21418e@citrix.com>

cheng--zhang/xenadmin,qlw/xenadmin,agimofcarmen/xenadmin,ushamandya/xenadmin,huizh/xenadmin,cheng--zhang/xenadmin,geosharath/xenadmin,geosharath/xenadmin,cheng--zhang/xenadmin,Frezzle/xenadmin,jijiang/xenadmin,MihaelaStoica/xenadmin,xenserver/xenadmin,geosharath/xenadmin,letsboogey/xenadmin,ushamandya/xenadmin,geosharath/xenadmin,jijiang/xenadmin,robhoes/xenadmin,xenserver/xenadmin,cheng--zhang/xenadmin,kc284/xenadmin,cheng-z/xenadmin,huizh/xenadmin,GaborApatiNagy/xenadmin,geosharath/xenadmin,letsboogey/xenadmin,cheng--zhang/xenadmin,GaborApatiNagy/xenadmin,ushamandya/xenadmin,cheng--zhang/xenadmin,Frezzle/xenadmin,robhoes/xenadmin,stephen-turner/xenadmin,cheng-z/xenadmin,cheng-z/xenadmin,agimofcarmen/xenadmin,huizh/xenadmin,letsboogey/xenadmin,qlw/xenadmin,GaborApatiNagy/xenadmin,MihaelaStoica/xenadmin,kc284/xenadmin,minli1/xenadmin,GaborApatiNagy/xenadmin,letsboogey/xenadmin,jijiang/xenadmin,jijiang/xenadmin,cheng-z/xenadmin,huizh/xenadmin,geosharath/xenadmin,minli1/xenadmin,GaborApatiNagy/xenadmin,ushamandya/xenadmin,cheng-z/xenadmin,Frezzle/xenadmin,GaborApatiNagy/xenadmin,MihaelaStoica/xenadmin,minli1/xenadmin,Frezzle/xenadmin,robhoes/xenadmin,qlw/xenadmin,MihaelaStoica/xenadmin,MihaelaStoica/xenadmin,kc284/xenadmin,kc284/xenadmin,ushamandya/xenadmin,agimofcarmen/xenadmin,stephen-turner/xenadmin,stephen-turner/xenadmin,jijiang/xenadmin,stephen-turner/xenadmin,huizh/xenadmin,qlw/xenadmin,Frezzle/xenadmin,stephen-turner/xenadmin,qlw/xenadmin,ushamandya/xenadmin,jijiang/xenadmin,minli1/xenadmin,robhoes/xenadmin,letsboogey/xenadmin,cheng-z/xenadmin,minli1/xenadmin,stephen-turner/xenadmin,xenserver/xenadmin,agimofcarmen/xenadmin,minli1/xenadmin,letsboogey/xenadmin,kc284/xenadmin,MihaelaStoica/xenadmin,huizh/xenadmin,robhoes/xenadmin,Frezzle/xenadmin,robhoes/xenadmin,agimofcarmen/xenadmin