Add gRPC local subchannel support for tikv client. #338
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Signed-off-by: yulai.li <[email protected]>
blacktear23
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ekexium
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Mar 21, 2022
| let cb = ChannelBuilder::new(env) | ||
| .keepalive_time(Duration::from_secs(10)) | ||
| .keepalive_timeout(Duration::from_secs(3)); | ||
| .keepalive_timeout(Duration::from_secs(3)) | ||
| .raw_cfg_int(CString::new("grpc.use_local_subchannel_pool").unwrap(), 1); |
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raw_cfg_int is not intended to be used directly according to its doc. I think it would be better to add a method grpc-rs to set it.
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OK, I will create a PR for grpc-rs first. But this is the easy way to set the configuration at rust-client side.
And why not grpc-rs not provide a method like set_config_int(&str, int).
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@ekexium tikv/grpc-rs#565 is created. |
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@blacktear23 any update to this pr? |
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@yongman nothing changed, we can go ahead with your pr. |
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As default configuration gRPC will reuse TCP connections to each TiKV server what ever how many TiKV client instance created. This PR will enable
grpc. use_local_subchannel_poolsettings to ensure every TiKV client will create it self owned TCP connections to TiKV (or PD).This will help to use more CPU when heavy load on gRPC calls. And as default settings it will make user confused when create many TiKV client but OS shows only one TCP connection to each TiKV server.