Thanks Sree! Just to confirm by closure, you mean shutting down idle connections?
Regards, Deepak On Tue, Aug 8, 2017 at 8:14 PM, Sree Kuchibhotla <sr...@google.com> wrote: > Hi Deepak, > grpc core internally creates two sets of thread pools : > - Timer thread pool > <https://github.com/grpc/grpc/blob/master/src/core/lib/iomgr/timer_manager.c> > (to execute timers/alarms): Max of 2 threads. Typically just one. > - Executor thread pool > <https://github.com/grpc/grpc/blob/master/src/core/lib/iomgr/executor.c#L81>: > A dedicated thread pool (with max threads of 2*number of cores on your > machine) that handle executing closures.= > > So this is what you are perhaps seeing. Currently we have not exposed a > way to configure these thread pool sizes but we might add it in future. > > thanks, > -Sree > > > On Thursday, August 3, 2017 at 3:32:28 PM UTC-7, deepako...@gmail.com > wrote: >> >> Hi, >> >> I am planning to implement a service that has very low scale i.e. it >> would service only a handful of clients. >> I want to keep resource usage to minimal and thus trying to use a single >> thread for all clients. After reading >> gRPC documentation it seems async model is the way to go. But when I >> tried greeter_async_server example >> in cpp, I see it creates multiple threads(18 in my case) although it >> uses a single thread to service all clients(which I want) >> . >> Is there a way to avoid creation of so many threads in async model? >> >> bash-4.2$ ps -ax | grep async >> 1425 pts/5 Sl+ 0:27 ./greeter_async_server >> >> top - 15:15:02 up 153 days, 1:17, 13 users, load average: 0.00, 0.00, >> 0.04 >> Threads: 18 total, 0 running, 18 sleeping, 0 stopped, 0 zombie >> %Cpu(s): 0.0 us, 0.0 sy, 0.0 ni, 99.9 id, 0.0 wa, 0.0 hi, 0.0 si, >> 0.0 st >> KiB Mem : 49457112 total, 45066340 free, 3105740 <310-5740> used, >> 1285032 buff/cache >> KiB Swap: 2097148 total, 2095108 free, 2040 used. 45603564 avail Mem >> >> PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND >> 1425 deojha 20 0 244532 7716 5164 S 0.0 0.0 0:00.00 >> greeter_async_s >> 1426 deojha 20 0 244532 7716 5164 S 0.0 0.0 0:12.08 >> greeter_async_s >> 1428 deojha 20 0 244532 7716 5164 S 0.0 0.0 0:01.04 >> greeter_async_s >> 1429 deojha 20 0 244532 7716 5164 S 0.0 0.0 0:00.81 >> greeter_async_s >> 1430 deojha 20 0 244532 7716 5164 S 0.0 0.0 0:00.99 >> greeter_async_s >> 1431 deojha 20 0 244532 7716 5164 S 0.0 0.0 0:01.09 >> greeter_async_s >> 1432 deojha 20 0 244532 7716 5164 S 0.0 0.0 0:00.77 >> greeter_async_s >> 1433 deojha 20 0 244532 7716 5164 S 0.0 0.0 0:01.02 >> greeter_async_s >> 1434 deojha 20 0 244532 7716 5164 S 0.0 0.0 0:00.99 >> greeter_async_s >> 1435 deojha 20 0 244532 7716 5164 S 0.0 0.0 0:01.08 >> greeter_async_s >> 1436 deojha 20 0 244532 7716 5164 S 0.0 0.0 0:00.83 >> greeter_async_s >> 1437 deojha 20 0 244532 7716 5164 S 0.0 0.0 0:01.06 >> greeter_async_s >> 1438 deojha 20 0 244532 7716 5164 S 0.0 0.0 0:00.91 >> greeter_async_s >> 1439 deojha 20 0 244532 7716 5164 S 0.0 0.0 0:00.79 >> greeter_async_s >> 1440 deojha 20 0 244532 7716 5164 S 0.0 0.0 0:01.06 >> greeter_async_s >> 1444 deojha 20 0 244532 7716 5164 S 0.0 0.0 0:00.83 >> greeter_async_s >> 1445 deojha 20 0 244532 7716 5164 S 0.0 0.0 0:00.75 >> greeter_async_s >> 1446 deojha 20 0 244532 7716 5164 S 0.0 0.0 0:00.76 >> greeter_async_s >> >> >> Uses single thread to service all clients. >> >> top - 15:15:42 up 153 days, 1:18, 13 users, load average: 0.22, 0.05, >> 0.05 >> Threads: 18 total, 0 running, 18 sleeping, 0 stopped, 0 zombie >> %Cpu(s): 6.3 us, 7.5 sy, 0.0 ni, 85.7 id, 0.0 wa, 0.0 hi, 0.5 si, >> 0.0 st >> KiB Mem : 49457112 total, 45056008 free, 3110176 used, 1290928 >> buff/cache >> KiB Swap: 2097148 total, 2095108 free, 2040 used. 45593760 avail Mem >> >> PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND >> 1425 deojha 20 0 244640 8308 5548 S 19.6 0.0 0:02.21 >> greeter_async_s >> 1426 deojha 20 0 244640 8308 5548 S 0.0 0.0 0:12.09 >> greeter_async_s >> 1428 deojha 20 0 244640 8308 5548 S 0.0 0.0 0:01.04 >> greeter_async_s >> 1429 deojha 20 0 244640 8308 5548 S 0.0 0.0 0:00.81 >> greeter_async_s >> 1430 deojha 20 0 244640 8308 5548 S 0.0 0.0 0:00.99 >> greeter_async_s >> 1431 deojha 20 0 244640 8308 5548 S 0.0 0.0 0:01.09 >> greeter_async_s >> 1432 deojha 20 0 244640 8308 5548 S 0.0 0.0 0:00.77 >> greeter_async_s >> 1433 deojha 20 0 244640 8308 5548 S 0.0 0.0 0:01.02 >> greeter_async_s >> 1434 deojha 20 0 244640 8308 5548 S 0.0 0.0 0:00.99 >> greeter_async_s >> 1435 deojha 20 0 244640 8308 5548 S 0.0 0.0 0:01.08 >> greeter_async_s >> 1436 deojha 20 0 244640 8308 5548 S 0.0 0.0 0:00.83 >> greeter_async_s >> 1437 deojha 20 0 244640 8308 5548 S 0.0 0.0 0:01.06 >> greeter_async_s >> 1438 deojha 20 0 244640 8308 5548 S 0.0 0.0 0:00.91 >> greeter_async_s >> 1439 deojha 20 0 244640 8308 5548 S 0.0 0.0 0:00.79 >> greeter_async_s >> 1440 deojha 20 0 244640 8308 5548 S 0.0 0.0 0:01.06 >> greeter_async_s >> 1444 deojha 20 0 244640 8308 5548 S 0.0 0.0 0:00.83 >> greeter_async_s >> 1445 deojha 20 0 244640 8308 5548 S 0.0 0.0 0:00.75 >> greeter_async_s >> 1446 deojha 20 0 244640 8308 5548 S 0.0 0.0 0:00.76 >> greeter_async_s >> >> Regards, >> Deepak >> > -- Thanks & Regards Deepak Ojha -- You received this message because you are subscribed to the Google Groups "grpc.io" group. 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