[ovirt-devel] [VDSM] VDSM threads as in vdsm 4.15.0

[Francesco Romani]

Hi,

I'm trying to enumerate all the daemon threads VDSM uses, as in 4.15.0
(to be exact, as in master 3228f5dad8f488192ea62f4e3e39172832435e80)

So far I got:

===

SocketServer: 1 service, short lived thread per request?

VDSM alone, with no VM running

num what                where
--------------------------------------------------------
1   libVirtEventLoop    lib/vdsm/libvirtconnection.py
P   TaskManager         vdsm/storage/hsm.py
1   StorageServer       vdsm/storage/storageServer.py
1   StorageRefresh      vdsm/storage/hsm.py
1   ChannelListener     vdsm/virt/vmchannels.py
1   HostStatsThread     vdsm/virt/sampling.py
1   MomThread           vdsm/momIF.py
1   clientIF            vdsm/clientIF.py
1   HostMonitor         mom/HostMonitor.py
1   StompReactor        vdsm/rpc/BindingJsonRpc.py
1   JsonRpcServer       vdsm/rpc/BidningJsonRpc.py
1   GuestManager        mom/GuestManager.py
1   PolicyEngine        mom/PolicyEngine.py
1   XmlRpcServer?       vdsm/rpc/BindingXMLRPC.py
1   Detector            vdsm/clientIF.py
1   RPCServer           mom/RPCServer.py
1   SocketServer        stdlib, triggered by vdsm/rpc/BindingXMLRPC.py
1   IOProcess?          vdsm/storage/outOfProcess.py
S   DomainMonitor       vdsm/storage/domainMonitor.py
P/2 HSM_MailMonitor     vdsm/storage/storage_mailbox.py
P/2 SPM_MailMonitor     vdsm/storage/storage_mailbox.py

P = pool size (config/irs/thread_pool_size)

Total: 17 + number(StorageDomains) + P * 2
Total with defaults (P=10) = 37 + number(StorageDomains)
Minimum storage domains: 2 (ISO + data)
Baseline: 39 threads

Per VM
1   sampling            vdsm/virt/sampling.py
1   GuestMonitor        mom/GuestMonitor.py

===

More precise update will follow. In the meantime, anyone please feel free to
point out omissions/errors.

Thanks,

-- 
Francesco Romani
RedHat Engineering Virtualization R & D
Phone: 8261328
IRC: fromani