[ 
https://issues.apache.org/jira/browse/IGNITE-23115?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Kirill Tkalenko updated IGNITE-23115:
-------------------------------------
    Fix Version/s: 3.0

> Checkpoint single partition from a single thread
> ------------------------------------------------
>
>                 Key: IGNITE-23115
>                 URL: https://issues.apache.org/jira/browse/IGNITE-23115
>             Project: Ignite
>          Issue Type: Improvement
>            Reporter: Ivan Bessonov
>            Assignee: Kirill Tkalenko
>            Priority: Major
>              Labels: ignite-3
>             Fix For: 3.0
>
>         Attachments: 
> _Run_Unit_Tests_auto-generated_Run_Unit_Tests_2_32600.log.zip
>
>          Time Spent: 4h 10m
>  Remaining Estimate: 0h
>
> As far as I know, writing multiple files from multiple threads is more 
> efficient that writing a single file from multiple threads. But that's 
> exactly what we do.
> We should make an alternative implementation that would distribute partitions 
> between threads and check if it performs better than current implementation.
> The POC showed that writing dirty pages of a partition by one thread is more 
> efficient than by several threads concurrently.
> PR: [ignite-3/pull/4366|https://github.com/apache/ignite-3/pull/4366].
> Test: *org.apache.ignite.internal.storage.pagememory.mv.CpWritePagesTest*.
> Logs:  [^_Run_Unit_Tests_auto-generated_Run_Unit_Tests_2_32600.log.zip] .
> Results:
> {noformat}
> CpWritePagesTest#testMultiThreadNotUseAsync
>       Checkpoint started [checkpointId=a468d7ed-60ad-456d-9f68-dbec4ac1d14b, 
> checkpointBeforeWriteLockTime=48ms, checkpointWriteLockWait=0ms, 
> checkpointListenersExecuteTime=1ms, checkpointWriteLockHoldTime=3ms, 
> splitAndSortPagesDuration=1469ms, pages=755304, reason='test']
>       Checkpoint finished [checkpointId=a468d7ed-60ad-456d-9f68-dbec4ac1d14b, 
> pages=755304, pagesWriteTime=3858ms, fsyncTime=5533ms, totalTime=10915ms]
>       
>       Checkpoint started      
> [checkpointId=8880bbfa-1690-44b4-8080-d159964d4167, 
> checkpointBeforeWriteLockTime=16ms, checkpointWriteLockWait=0ms, 
> checkpointListenersExecuteTime=1ms, checkpointWriteLockHoldTime=1ms, 
> splitAndSortPagesDuration=1491ms, pages=755285, reason='test']
>       Checkpoint finished [checkpointId=8880bbfa-1690-44b4-8080-d159964d4167, 
> pages=755285, pagesWriteTime=3181ms, fsyncTime=5766ms, totalTime=10458ms]
>       
>       Checkpoint started      
> [checkpointId=5f1aac0c-cefb-4196-8437-569cedb654bb, 
> checkpointBeforeWriteLockTime=16ms, checkpointWriteLockWait=0ms, 
> checkpointListenersExecuteTime=0ms, checkpointWriteLockHoldTime=1ms, 
> splitAndSortPagesDuration=1073ms, pages=755299, reason='test']
>       Checkpoint finished [checkpointId=5f1aac0c-cefb-4196-8437-569cedb654bb, 
> pages=755299, pagesWriteTime=3136ms, fsyncTime=5780ms, totalTime=10008ms]
>       
>       Checkpoint started      
> [checkpointId=0c28193f-7cef-4875-8b74-092f50aa6f16, 
> checkpointBeforeWriteLockTime=16ms, checkpointWriteLockWait=0ms, 
> checkpointListenersExecuteTime=0ms, checkpointWriteLockHoldTime=0ms, 
> splitAndSortPagesDuration=1063ms, pages=755285, reason='test']
>       Checkpoint finished [checkpointId=0c28193f-7cef-4875-8b74-092f50aa6f16, 
> pages=755285, pagesWriteTime=3084ms, fsyncTime=5760ms, totalTime=9925ms]
>       
>       Checkpoint started      
> [checkpointId=38824368-f2d6-41b5-b2c6-4c63b85e9aa0, 
> checkpointBeforeWriteLockTime=15ms, checkpointWriteLockWait=0ms, 
> checkpointListenersExecuteTime=1ms, checkpointWriteLockHoldTime=1ms, 
> splitAndSortPagesDuration=1238ms, pages=755302, reason='test']
>       Checkpoint finished [checkpointId=38824368-f2d6-41b5-b2c6-4c63b85e9aa0, 
> pages=755302, pagesWriteTime=3098ms, fsyncTime=5767ms, totalTime=10121ms]
>       
>       Checkpoint started      
> [checkpointId=fca461f9-ba64-4457-9501-23c9b9e10770, 
> checkpointBeforeWriteLockTime=17ms, checkpointWriteLockWait=0ms, 
> checkpointListenersExecuteTime=0ms, checkpointWriteLockHoldTime=0ms, 
> splitAndSortPagesDuration=1565ms, pages=755307, reason='test']
>       Checkpoint finished [checkpointId=fca461f9-ba64-4457-9501-23c9b9e10770, 
> pages=755307, pagesWriteTime=4300ms, fsyncTime=5761ms, totalTime=11644ms]
>       Checkpoint started      
> [checkpointId=f65a7686-ff73-4d14-9839-c4517ee1feab, 
> checkpointBeforeWriteLockTime=8ms, checkpointWriteLockWait=0ms, 
> checkpointListenersExecuteTime=0ms, checkpointWriteLockHoldTime=1ms, 
> splitAndSortPagesDuration=1079ms, pages=755307, reason='test']
>       Checkpoint finished [checkpointId=f65a7686-ff73-4d14-9839-c4517ee1feab, 
> pages=755307, pagesWriteTime=3392ms, fsyncTime=5766ms, totalTime=10247ms]
>       
>       Checkpoint started      
> [checkpointId=8c052dd6-83ee-4a53-9e2d-fd3f896c01c2, 
> checkpointBeforeWriteLockTime=15ms, checkpointWriteLockWait=0ms, 
> checkpointListenersExecuteTime=1ms, checkpointWriteLockHoldTime=1ms, 
> splitAndSortPagesDuration=1502ms, pages=755284, reason='test']
>       Checkpoint finished [checkpointId=8c052dd6-83ee-4a53-9e2d-fd3f896c01c2, 
> pages=755284, pagesWriteTime=3977ms, fsyncTime=5770ms, totalTime=11266ms]
>       
>       Checkpoint started      
> [checkpointId=799b852f-ada7-4308-9528-ce751541f2fc, 
> checkpointBeforeWriteLockTime=14ms, checkpointWriteLockWait=0ms, 
> checkpointListenersExecuteTime=0ms, checkpointWriteLockHoldTime=0ms, 
> splitAndSortPagesDuration=1100ms, pages=755303, reason='test']
>       Checkpoint finished [checkpointId=799b852f-ada7-4308-9528-ce751541f2fc, 
> pages=755303, pagesWriteTime=3059ms, fsyncTime=5768ms, totalTime=9943ms]
>       
>       Checkpoint started      
> [checkpointId=e3979b6a-8959-4d0e-85c7-71992ad5a980, 
> checkpointBeforeWriteLockTime=16ms, checkpointWriteLockWait=0ms, 
> checkpointListenersExecuteTime=0ms, checkpointWriteLockHoldTime=0ms, 
> splitAndSortPagesDuration=1143ms, pages=755321, reason='test']
>       Checkpoint finished [checkpointId=e3979b6a-8959-4d0e-85c7-71992ad5a980, 
> pages=755321, pagesWriteTime=3162ms, fsyncTime=7885ms, totalTime=12208ms]
> CpWritePagesTest#testOneThreadNotUseAsync
>       Checkpoint started      
> [checkpointId=696d50c3-24e4-48fc-965d-dacf26f567e1, 
> checkpointBeforeWriteLockTime=14ms, checkpointWriteLockWait=0ms, 
> checkpointListenersExecuteTime=1ms, checkpointWriteLockHoldTime=1ms, 
> splitAndSortPagesDuration=1236ms, pages=755307, reason='test']
>       Checkpoint finished [checkpointId=696d50c3-24e4-48fc-965d-dacf26f567e1, 
> pages=755307, pagesWriteTime=1672ms, fsyncTime=5767ms, totalTime=8694ms]
>       
>       Checkpoint started      
> [checkpointId=9fd4ac3b-3904-4bee-8db1-6b94752b8448, 
> checkpointBeforeWriteLockTime=13ms, checkpointWriteLockWait=0ms, 
> checkpointListenersExecuteTime=1ms, checkpointWriteLockHoldTime=1ms, 
> splitAndSortPagesDuration=986ms, pages=755260, reason='test']
>       Checkpoint finished [checkpointId=9fd4ac3b-3904-4bee-8db1-6b94752b8448, 
> pages=755260, pagesWriteTime=2045ms, fsyncTime=5671ms, totalTime=8717ms]
>       
>       Checkpoint started      
> [checkpointId=f6652d34-4186-4f73-a6ec-39312e47b45f, 
> checkpointBeforeWriteLockTime=14ms, checkpointWriteLockWait=0ms, 
> checkpointListenersExecuteTime=0ms, checkpointWriteLockHoldTime=0ms, 
> splitAndSortPagesDuration=1187ms, pages=755317, reason='test']
>       Checkpoint finished [checkpointId=f6652d34-4186-4f73-a6ec-39312e47b45f, 
> pages=755317, pagesWriteTime=2364ms, fsyncTime=5763ms, totalTime=9329ms]
>       Checkpoint started      
> [checkpointId=34569d9e-0275-4251-8cbb-a01ea15cc707, 
> checkpointBeforeWriteLockTime=14ms, checkpointWriteLockWait=0ms, 
> checkpointListenersExecuteTime=0ms, checkpointWriteLockHoldTime=0ms, 
> splitAndSortPagesDuration=1117ms, pages=755312, reason='test']
>       Checkpoint finished [checkpointId=34569d9e-0275-4251-8cbb-a01ea15cc707, 
> pages=755312, pagesWriteTime=1597ms, fsyncTime=5762ms, totalTime=8491ms]
>       Checkpoint started      
> [checkpointId=6107abbf-59d8-4b24-8c98-5f6084a87cfe, 
> checkpointBeforeWriteLockTime=14ms, checkpointWriteLockWait=0ms, 
> checkpointListenersExecuteTime=0ms, checkpointWriteLockHoldTime=0ms, 
> splitAndSortPagesDuration=1063ms, pages=755296, reason='test']
>       Checkpoint finished [checkpointId=6107abbf-59d8-4b24-8c98-5f6084a87cfe, 
> pages=755296, pagesWriteTime=1585ms, fsyncTime=5765ms, totalTime=8428ms]
>       
>       Checkpoint started      
> [checkpointId=ba2a5857-fbf2-48ab-8b50-ea0051682944, 
> checkpointBeforeWriteLockTime=15ms, checkpointWriteLockWait=0ms, 
> checkpointListenersExecuteTime=0ms, checkpointWriteLockHoldTime=0ms, 
> splitAndSortPagesDuration=1088ms, pages=755284, reason='test']
>       Checkpoint finished [checkpointId=ba2a5857-fbf2-48ab-8b50-ea0051682944, 
> pages=755284, pagesWriteTime=1593ms, fsyncTime=5767ms, totalTime=8464ms]
>       Checkpoint started      
> [checkpointId=88549591-b5ac-4a96-87a0-55c365aab1e1, 
> checkpointBeforeWriteLockTime=15ms, checkpointWriteLockWait=0ms, 
> checkpointListenersExecuteTime=0ms, checkpointWriteLockHoldTime=0ms, 
> splitAndSortPagesDuration=1235ms, pages=755284, reason='test']
>       Checkpoint finished [checkpointId=88549591-b5ac-4a96-87a0-55c365aab1e1, 
> pages=755284, pagesWriteTime=1953ms, fsyncTime=5760ms, totalTime=8965ms]
>       Checkpoint started      
> [checkpointId=6a6353d6-ce39-4270-85ff-e566ff99ac8f, 
> checkpointBeforeWriteLockTime=14ms, checkpointWriteLockWait=0ms, 
> checkpointListenersExecuteTime=0ms, checkpointWriteLockHoldTime=0ms, 
> splitAndSortPagesDuration=1325ms, pages=755311, reason='test']
>       Checkpoint finished [checkpointId=6a6353d6-ce39-4270-85ff-e566ff99ac8f, 
> pages=755311, pagesWriteTime=2032ms, fsyncTime=5770ms, totalTime=9142ms]
>       
>       Checkpoint started      
> [checkpointId=651796ab-8404-4d5a-a71e-5bb3fbeaae82, 
> checkpointBeforeWriteLockTime=14ms, checkpointWriteLockWait=0ms, 
> checkpointListenersExecuteTime=0ms, checkpointWriteLockHoldTime=0ms, 
> splitAndSortPagesDuration=1052ms, pages=755287, reason='test']
>       Checkpoint finished [checkpointId=651796ab-8404-4d5a-a71e-5bb3fbeaae82, 
> pages=755287, pagesWriteTime=2223ms, fsyncTime=5766ms, totalTime=9056ms]
>       Checkpoint started      
> [checkpointId=298dca4e-52e9-49b3-a4bb-9bcc52aab3f7, 
> checkpointBeforeWriteLockTime=14ms, checkpointWriteLockWait=0ms, 
> checkpointListenersExecuteTime=1ms, checkpointWriteLockHoldTime=1ms, 
> splitAndSortPagesDuration=1125ms, pages=755296, reason='test']
>       Checkpoint finished [checkpointId=298dca4e-52e9-49b3-a4bb-9bcc52aab3f7, 
> pages=755296, pagesWriteTime=1626ms, fsyncTime=5763ms, totalTime=8530ms]
> CpWritePagesTest#testMultiThreadUseAsync
>       Checkpoint started      
> [checkpointId=4b123be0-02d7-4f1c-93e8-37f66d45179f, 
> checkpointBeforeWriteLockTime=15ms, checkpointWriteLockWait=0ms, 
> checkpointListenersExecuteTime=0ms, checkpointWriteLockHoldTime=0ms, 
> splitAndSortPagesDuration=1125ms, pages=755341, reason='test']
>       Checkpoint finished [checkpointId=4b123be0-02d7-4f1c-93e8-37f66d45179f, 
> pages=755341, pagesWriteTime=7300ms, fsyncTime=6863ms, totalTime=15303ms]
>       
>       Checkpoint started      
> [checkpointId=23f04398-aa39-4a50-8615-df9f9353d898, 
> checkpointBeforeWriteLockTime=14ms, checkpointWriteLockWait=0ms, 
> checkpointListenersExecuteTime=0ms, checkpointWriteLockHoldTime=0ms, 
> splitAndSortPagesDuration=1423ms, pages=755306, reason='test']
>       Checkpoint finished [checkpointId=23f04398-aa39-4a50-8615-df9f9353d898, 
> pages=755306, pagesWriteTime=7765ms, fsyncTime=7264ms, totalTime=16467ms]
>       
>       Checkpoint started      
> [checkpointId=50cc2f1e-2be6-4ffb-bc41-55b79bec6401, 
> checkpointBeforeWriteLockTime=15ms, checkpointWriteLockWait=0ms, 
> checkpointListenersExecuteTime=0ms, checkpointWriteLockHoldTime=1ms, 
> splitAndSortPagesDuration=1457ms, pages=755337, reason='test']
>       Checkpoint finished [checkpointId=50cc2f1e-2be6-4ffb-bc41-55b79bec6401, 
> pages=755337, pagesWriteTime=6396ms, fsyncTime=5771ms, totalTime=13643ms]
>       Checkpoint started      
> [checkpointId=c2f30b40-b1a3-4bbf-b8e4-f3f11c87f789, 
> checkpointBeforeWriteLockTime=16ms, checkpointWriteLockWait=0ms, 
> checkpointListenersExecuteTime=0ms, checkpointWriteLockHoldTime=0ms, 
> splitAndSortPagesDuration=1042ms, pages=755282, reason='test']
>       Checkpoint finished [checkpointId=c2f30b40-b1a3-4bbf-b8e4-f3f11c87f789, 
> pages=755282, pagesWriteTime=5963ms, fsyncTime=5770ms, totalTime=12794ms]
>       
>       Checkpoint started      
> [checkpointId=0ac1db51-79bb-4afd-bb40-525ab515488a, 
> checkpointBeforeWriteLockTime=16ms, checkpointWriteLockWait=0ms, 
> checkpointListenersExecuteTime=0ms, checkpointWriteLockHoldTime=0ms, 
> splitAndSortPagesDuration=1316ms, pages=755336, reason='test']
>       Checkpoint finished [checkpointId=0ac1db51-79bb-4afd-bb40-525ab515488a, 
> pages=755336, pagesWriteTime=6012ms, fsyncTime=5767ms, totalTime=13113ms]
>       
>       Checkpoint started [checkpointId=f916da9f-4706-4882-9cfd-0467562d3256, 
> checkpointBeforeWriteLockTime=14ms, checkpointWriteLockWait=0ms, 
> checkpointListenersExecuteTime=1ms, checkpointWriteLockHoldTime=1ms, 
> splitAndSortPagesDuration=1142ms, pages=755262, reason='test']
>       Checkpoint finished [checkpointId=f916da9f-4706-4882-9cfd-0467562d3256, 
> pages=755262, pagesWriteTime=6117ms, fsyncTime=7718ms, totalTime=14994ms]
>       Checkpoint started [checkpointId=6357381a-09be-4ab0-bd83-5b9b3ad1f613, 
> checkpointBeforeWriteLockTime=15ms, checkpointWriteLockWait=0ms, 
> checkpointListenersExecuteTime=0ms, checkpointWriteLockHoldTime=0ms, 
> splitAndSortPagesDuration=1095ms, pages=755298, reason='test']
>       Checkpoint finished [checkpointId=6357381a-09be-4ab0-bd83-5b9b3ad1f613, 
> pages=755298, pagesWriteTime=6059ms, fsyncTime=5574ms, totalTime=12744ms]
>       
>       Checkpoint started      
> [checkpointId=b250c459-c4dc-42a7-9a9d-df222d4c6f6c, 
> checkpointBeforeWriteLockTime=15ms, checkpointWriteLockWait=0ms, 
> checkpointListenersExecuteTime=0ms, checkpointWriteLockHoldTime=0ms, 
> splitAndSortPagesDuration=1088ms, pages=755326, reason='test']
>       Checkpoint finished [checkpointId=b250c459-c4dc-42a7-9a9d-df222d4c6f6c, 
> pages=755326, pagesWriteTime=5144ms, fsyncTime=5766ms, totalTime=12014ms]
>       
>       Checkpoint started      
> [checkpointId=5caca15a-74c1-4b8e-94cc-3089bec59f74, 
> checkpointBeforeWriteLockTime=15ms, checkpointWriteLockWait=0ms, 
> checkpointListenersExecuteTime=0ms, checkpointWriteLockHoldTime=0ms, 
> splitAndSortPagesDuration=1178ms, pages=755304, reason='test']
>       Checkpoint finished [checkpointId=5caca15a-74c1-4b8e-94cc-3089bec59f74, 
> pages=755304, pagesWriteTime=5503ms, fsyncTime=5772ms, totalTime=12469ms]
>       
>       Checkpoint started      
> [checkpointId=99bda466-038c-460e-9be1-9eec8a784dc6, 
> checkpointBeforeWriteLockTime=14ms, checkpointWriteLockWait=0ms, 
> checkpointListenersExecuteTime=0ms, checkpointWriteLockHoldTime=0ms, 
> splitAndSortPagesDuration=1315ms, pages=755260, reason='test']
>       Checkpoint finished [checkpointId=99bda466-038c-460e-9be1-9eec8a784dc6, 
> pages=755260, pagesWriteTime=5333ms, fsyncTime=5771ms, totalTime=12435ms]
>       
> CpWritePagesTest#testOneThreadUseAsync
>       Checkpoint started      
> [checkpointId=c9436f06-71d7-49af-a035-20a467a47310, 
> checkpointBeforeWriteLockTime=16ms, checkpointWriteLockWait=0ms, 
> checkpointListenersExecuteTime=1ms, checkpointWriteLockHoldTime=1ms, 
> splitAndSortPagesDuration=1084ms, pages=755328, reason='test']
>       Checkpoint finished [checkpointId=c9436f06-71d7-49af-a035-20a467a47310, 
> pages=755328, pagesWriteTime=4409ms, fsyncTime=5771ms, totalTime=11283ms]
>       Checkpoint started      
> [checkpointId=44bddd5b-77fa-4cd0-ac78-3a2abf6305b3, 
> checkpointBeforeWriteLockTime=15ms, checkpointWriteLockWait=0ms, 
> checkpointListenersExecuteTime=0ms, checkpointWriteLockHoldTime=0ms, 
> splitAndSortPagesDuration=1249ms, pages=755298, reason='test']
>       Checkpoint finished [checkpointId=44bddd5b-77fa-4cd0-ac78-3a2abf6305b3, 
> pages=755298, pagesWriteTime=5005ms, fsyncTime=5765ms, totalTime=12035ms]
>       
>       Checkpoint started      
> [checkpointId=bc3bb678-19e8-4aef-8466-4c2c3dbeff84, 
> checkpointBeforeWriteLockTime=14ms, checkpointWriteLockWait=1ms, 
> checkpointListenersExecuteTime=0ms, checkpointWriteLockHoldTime=0ms, 
> splitAndSortPagesDuration=1141ms, pages=755325, reason='test']
>       Checkpoint finished [checkpointId=bc3bb678-19e8-4aef-8466-4c2c3dbeff84, 
> pages=755325, pagesWriteTime=4467ms, fsyncTime=5302ms, totalTime=10926ms]
>       
>       Checkpoint started      
> [checkpointId=7283c7b4-12a9-4a25-9268-f1c807674d46, 
> checkpointBeforeWriteLockTime=14ms, checkpointWriteLockWait=0ms, 
> checkpointListenersExecuteTime=0ms, checkpointWriteLockHoldTime=0ms, 
> splitAndSortPagesDuration=1121ms, pages=755278, reason='test']
>       Checkpoint finished [checkpointId=7283c7b4-12a9-4a25-9268-f1c807674d46, 
> pages=755278, pagesWriteTime=4544ms, fsyncTime=5768ms, totalTime=11448ms]
>       
>       Checkpoint started      
> [checkpointId=acd654a9-5da7-45e3-b646-165a0b72c70b, 
> checkpointBeforeWriteLockTime=16ms, checkpointWriteLockWait=0ms, 
> checkpointListenersExecuteTime=1ms, checkpointWriteLockHoldTime=1ms, 
> splitAndSortPagesDuration=1133ms, pages=755334, reason='test']
>       Checkpoint finished [checkpointId=acd654a9-5da7-45e3-b646-165a0b72c70b, 
> pages=755334, pagesWriteTime=4180ms, fsyncTime=5542ms, totalTime=10874ms]
>       
>       Checkpoint started      
> [checkpointId=1d9d6f3d-efce-4dbc-9268-46a32903c606, 
> checkpointBeforeWriteLockTime=15ms, checkpointWriteLockWait=0ms, 
> checkpointListenersExecuteTime=0ms, checkpointWriteLockHoldTime=0ms, 
> splitAndSortPagesDuration=1244ms, pages=755297, reason='test']
>       Checkpoint finished [checkpointId=1d9d6f3d-efce-4dbc-9268-46a32903c606, 
> pages=755297, pagesWriteTime=4336ms, fsyncTime=5773ms, totalTime=11369ms]
>       Checkpoint started      
> [checkpointId=fffcbf15-a912-4447-88ba-870a5b76ec53, 
> checkpointBeforeWriteLockTime=15ms, checkpointWriteLockWait=0ms, 
> checkpointListenersExecuteTime=0ms, checkpointWriteLockHoldTime=0ms, 
> splitAndSortPagesDuration=1296ms, pages=755274, reason='test']
>       Checkpoint finished [checkpointId=fffcbf15-a912-4447-88ba-870a5b76ec53, 
> pages=755274, pagesWriteTime=4387ms, fsyncTime=5768ms, totalTime=11467ms]
>       Checkpoint started      
> [checkpointId=be171217-31b3-4242-bc0e-ea5c921e5da6, 
> checkpointBeforeWriteLockTime=16ms, checkpointWriteLockWait=0ms, 
> checkpointListenersExecuteTime=0ms, checkpointWriteLockHoldTime=0ms, 
> splitAndSortPagesDuration=1052ms, pages=755298, reason='test']
>       Checkpoint finished [checkpointId=be171217-31b3-4242-bc0e-ea5c921e5da6, 
> pages=755298, pagesWriteTime=4348ms, fsyncTime=5787ms, totalTime=11204ms]
>       
>       Checkpoint started      
> [checkpointId=7b64b2ff-8493-412e-9f0f-59e6eefc1d3b, 
> checkpointBeforeWriteLockTime=15ms, checkpointWriteLockWait=0ms, 
> checkpointListenersExecuteTime=0ms, checkpointWriteLockHoldTime=0ms, 
> splitAndSortPagesDuration=1344ms, pages=755305, reason='test']
>       Checkpoint finished [checkpointId=7b64b2ff-8493-412e-9f0f-59e6eefc1d3b, 
> pages=755305, pagesWriteTime=4153ms, fsyncTime=5767ms, totalTime=11280ms]
>       Checkpoint started      
> [checkpointId=1bb07aaa-3fcb-4744-8eb3-3f9bba87ac17, 
> checkpointBeforeWriteLockTime=14ms, checkpointWriteLockWait=0ms, 
> checkpointListenersExecuteTime=0ms, checkpointWriteLockHoldTime=0ms, 
> splitAndSortPagesDuration=1303ms, pages=755319, reason='test']
>       Checkpoint finished [checkpointId=1bb07aaa-3fcb-4744-8eb3-3f9bba87ac17, 
> pages=755319, pagesWriteTime=4231ms, fsyncTime=5311ms, totalTime=10864ms]
> {noformat}
> *{color:#DE350B}Total{color}* - needs to be implemented.



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