...
A single backup operation (ClusterPerf with 100-byte writes, 1 master, 3 backups). For each operation, a timeline of events was logged. Not all timelines had the same "shape", as not all backup operations are handled by the same sequence of events. Thus, the most common timeline "shape" was chosen, and the timelines details below present statistics about the most common timeline shape. This procedure was done for both the backup and the master. Based on source tree at commit 8f30e4e6d84fc2a13578ac0c92c84065047c0581.
On the Master
Averaged over 1912 same-shape timelines.
...
| Code Block | ||||
|---|---|---|---|---|
| ||||
( Cumulative ) | Delta | [ Std. Dev. ] Event Description ( Min Mean Max ) | Min Mean Max | [ ] ( ) | | [ ] ( 0.0 ns 0.0 ns 0.0 ns ) | 0.0 ns 0.0 ns 0.0 ns | [ 0.0 ns ] Invoking sync() to backups ( 90.0 ns 139.0 ns 531.5 ns ) | 90.0 ns 139.0 ns 531.5 ns | [ 35.0 ns ] Invoking Send 'write segment' RPC ( 202.5 ns 280.2 ns 783.4 ns ) | 112.5 ns 141.1 ns 251.9 ns | [ 12.7 ns ] Invoking client.send() ( 218.5 ns 296.7 ns 802.8 ns ) | 16.0 ns 16.5 ns 19.4 ns | [ 0.8 ns ] Invoking session->clientSend() ( 441.4 ns 605.4 ns 5.4 us ) | 222.9 ns 308.8 ns 4.6 us | [ 119.6 ns ] Acquired Dispatch::Lock in TransportManager::WorkerSession::clientSend ( 497.0 ns 708.3 ns 5.6 us ) | 55.6 ns 102.8 ns 183.4 ns | [ 16.1 ns ] Invoking Instantiate new ClientRpc ( 566.9 ns 841.6 ns 16.9 us ) | 69.9 ns 133.4 ns 11.3 us | [ 256.0 ns ] Completed Instantiate new ClientRpc ( 583.9 ns 862.9 ns 16.9 us ) | 17.0 ns 21.3 ns 45.0 ns | [ 2.3 ns ] Invoking rpc->sendOrQueue ( 891.4 ns 1.3 us 21.4 us ) | 307.5 ns 387.9 ns 4.5 us | [ 97.0 ns ] Invoking postSendZeroCopy ( 1.3 us 1.8 us 22.6 us ) | 455.4 ns 587.0 ns 1.2 us | [ 47.2 ns ] Completed postSendZeroCopy ( 1.5 us 2.0 us 31.6 us ) | 127.5 ns 196.4 ns 9.0 us | [ 202.4 ns ] Completed rpc->sendOrQueue ( 1.5 us 2.1 us 31.7 us ) | 54.5 ns 73.2 ns 94.4 ns | [ 2.8 ns ] Completed session->clientSend() ( 1.5 us 2.1 us 31.7 us ) | 16.0 ns 16.9 ns 20.5 ns | [ 0.8 ns ] Completed client.send() ( 1.6 us 2.1 us 31.8 us ) | 16.0 ns 21.8 ns 35.5 ns | [ 2.3 ns ] Completed Send 'write segment' RPC ( 1.6 us 2.2 us 32.0 us ) | 37.5 ns 50.6 ns 224.0 ns | [ 15.5 ns ] Invoking Send 'write segment' RPC ( 1.7 us 2.3 us 32.2 us ) | 75.0 ns 98.3 ns 148.0 ns | [ 9.2 ns ] Invoking client.send() ( 1.7 us 2.3 us 32.2 us ) | 16.0 ns 16.6 ns 19.4 ns | [ 0.8 ns ] Invoking session->clientSend() ( 1.9 us 2.6 us 35.7 us ) | 175.9 ns 307.6 ns 3.5 us | [ 143.2 ns ] Acquired Dispatch::Lock in TransportManager::WorkerSession::clientSend ( 1.9 us 2.7 us 35.7 us ) | 33.4 ns 45.3 ns 70.9 ns | [ 1.3 ns ] Invoking Instantiate new ClientRpc ( 1.9 us 2.7 us 35.8 us ) | 45.0 ns 49.1 ns 78.4 ns | [ 4.3 ns ] Completed Instantiate new ClientRpc ( 2.0 us 2.7 us 35.8 us ) | 16.0 ns 16.6 ns 20.5 ns | [ 0.8 ns ] Invoking rpc->sendOrQueue ( 2.1 us 2.8 us 36.1 us ) | 95.1 ns 114.6 ns 270.0 ns | [ 9.4 ns ] Invoking postSendZeroCopy ( 2.3 us 3.2 us 40.9 us ) | 288.1 ns 334.2 ns 4.8 us | [ 104.3 ns ] Completed postSendZeroCopy ( 2.4 us 3.2 us 41.0 us ) | 53.5 ns 58.3 ns 107.4 ns | [ 4.6 ns ] Completed rpc->sendOrQueue ( 2.4 us 3.3 us 41.1 us ) | 52.5 ns 71.7 ns 90.0 ns | [ 3.0 ns ] Completed session->clientSend() ( 2.5 us 3.3 us 41.1 us ) | 16.0 ns 16.3 ns 30.0 ns | [ 0.6 ns ] Completed client.send() ( 2.5 us 3.3 us 41.2 us ) | 16.0 ns 22.5 ns 64.1 ns | [ 3.7 ns ] Completed Send 'write segment' RPC ( 2.5 us 3.4 us 41.3 us ) | 29.0 ns 44.6 ns 69.5 ns | [ 6.5 ns ] Invoking Send 'write segment' RPC ( 2.6 us 3.5 us 41.4 us ) | 69.5 ns 88.6 ns 148.0 ns | [ 10.8 ns ] Invoking client.send() ( 2.6 us 3.5 us 41.5 us ) | 16.0 ns 19.2 ns 35.5 ns | [ 3.3 ns ] Invoking session->clientSend() ( 2.8 us 3.8 us 45.5 us ) | 167.0 ns 302.3 ns 4.0 us | [ 177.7 ns ] Acquired Dispatch::Lock in TransportManager::WorkerSession::clientSend ( 2.8 us 3.8 us 45.5 us ) | 21.5 ns 30.0 ns 68.5 ns | [ 5.0 ns ] Invoking Instantiate new ClientRpc ( 2.8 us 3.9 us 45.6 us ) | 42.6 ns 52.9 ns 109.4 ns | [ 6.1 ns ] Completed Instantiate new ClientRpc ( 2.8 us 3.9 us 45.7 us ) | 16.0 ns 16.5 ns 62.0 ns | [ 1.3 ns ] Invoking rpc->sendOrQueue ( 3.0 us 4.0 us 46.0 us ) | 119.0 ns 146.3 ns 259.4 ns | [ 9.2 ns ] Invoking postSendZeroCopy ( 3.3 us 4.4 us 50.9 us ) | 311.9 ns 368.3 ns 4.9 us | [ 147.6 ns ] Completed postSendZeroCopy ( 3.3 us 4.5 us 59.8 us ) | 53.5 ns 60.1 ns 8.9 us | [ 202.2 ns ] Completed rpc->sendOrQueue ( 3.4 us 4.5 us 59.9 us ) | 52.5 ns 56.5 ns 101.9 ns | [ 4.9 ns ] Completed session->clientSend() ( 3.4 us 4.5 us 59.9 us ) | 16.0 ns 16.7 ns 39.5 ns | [ 1.0 ns ] Completed client.send() ( 3.4 us 4.6 us 59.9 us ) | 16.0 ns 34.4 ns 43.0 ns | [ 8.4 ns ] Completed Send 'write segment' RPC ( 4.0 us 8.2 us 68.4 us ) | 581.9 ns 3.6 us 8.5 us | [ 714.2 ns ] Reaped outstanding RPC (close) ( 4.3 us 9.8 us 116.3 us ) | 287.0 ns 1.6 us 47.9 us | [ 1.4 us ] Reaped outstanding RPC (close) ( 4.6 us 10.7 us 121.5 us ) | 276.5 ns 959.9 ns 5.2 us | [ 646.2 ns ] Reaped outstanding RPC (close) ( 4.6 us 10.8 us 126.1 us ) | 48.1 ns 60.2 ns 4.6 us | [ 104.0 ns ] Completed sync() to backups |
...
Event Completed Send 'write segment' RPC
Event Reaped outstanding RPC
...
Event Reaped outstanding RPC
...
Event Reaped outstanding RPC
...
Event Completed sync() to backups
...