Hello.
I would like to discuss how to control NFSd threads amount from container environment (is this particular case it means start of NFS server in network namespace
different to init_net).
So, I see three possible policies (let's assume, that there are two containers
- one requested 3 NFSd threads and another one - 4 NFSd threads):
1) start as many threads, as requested. I.e 7 threads for specified case (simplest case, but probably this is to much - 100 containers will start ~800 threads
by default).
2) start maximum number of requested threads. I.e. 4 threads for specified case (if NFSd server in container, requested 4 threads, will be stopped, then 3
thread will left working; will require some way to manage - rb tree of sorted list).
3) There could be some other (more flexible) policy: combine second one with running of one more thread for each second and further network namespace, started
NFS server. I.e.:
1 net ns: 3 threads request = 3 threads started
2 net ns: 4 threads request = 4 + 1 (per-net thread: 1 net ns) = 5 threads
started
3 net ns: 8 threads request = 8 + 2 (per-net threads: 2 net ns) = 10 threads
started
Bruce and community, what do you think about all this?
--
Best regards,
Stanislav Kinsbursky
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