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Type:
Improvement
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Resolution: Unresolved
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Priority:
Major - P3
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None
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Affects Version/s: None
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Component/s: Test CPPsuite
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5
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StorEng - Defined Pipeline
In order to make the Metrics Monitor interact with a given stat, there is a lot of overhead to make it possible.
For instance, if we take the example of WT_STAT_CONN_CACHE_HS_INSERT, we had to create a variable called CACHE_HS_INSERT in the cpp suite and map it to WT_STAT_CONN_CACHE_HS_INSERT:
$ grep -rn "CACHE_HS_INSERT" * src/common/constants.cpp:42:const std::string CACHE_HS_INSERT = "cache_hs_insert"; src/common/constants.h:45:extern const std::string CACHE_HS_INSERT; src/component/metrics_monitor.cpp:56: if (name == CACHE_HS_INSERT) src/component/metrics_monitor.cpp:57: return (WT_STAT_CONN_CACHE_HS_INSERT); src/component/metrics_monitor.cpp:96: stat_config.reset(_config->get_subconfig(CACHE_HS_INSERT)); src/component/metrics_monitor.cpp:98: new statistics(*stat_config, CACHE_HS_INSERT, get_stat_field(CACHE_HS_INSERT))));
Then we can finally use it in a test configuration as shown below:
metrics_monitor=
(
cache_hs_insert=
(
max=10,
max=100000000,
postrun=true,
save=true,
),
This is too much work and not viable in the long term. We cannot map each existing stat unless it is done automatically. This ticket should find a better way to monitor existing WT stats from the cppsuite.