a question about the performance data.

I'm testing some test automation open source.
When measuring performance information, the results of pyidevice and tidevice differ in some ways.
Compared to pyidevice, The data in the first row of the tidvice result does not exist. The rest of the data exists.
Can you check this? I started the app after executing the command. mabye timing issues?

$ tidevice perf -o cpu -B com.aaa.bbb
**??? // missing data**
{'timestamp': 1678093097101, 'pid': 5020, 'value': 0.33430576602225337, 'sys_value': 236.2912087912088, 'count': 6}
{'timestamp': 1678093097862, 'pid': 5020, 'value': 0.013103374504391915, 'sys_value': 225.5775577557756, 'count': 6}
{'timestamp': 1678093098862, 'pid': 5020, 'value': 0.018070079154281122, 'sys_value': 123.35393539353935, 'count': 6}
{'timestamp': 1678093099858, 'pid': 5020, 'value': 0.12342693958897713, 'sys_value': 143.8644688644689, 'count': 6}
{'timestamp': 1678093100859, 'pid': 5020, 'value': 0.41109598427681404, 'sys_value': 160.46321102698505, 'count': 6}
{'timestamp': 1678093101860, 'pid': 5020, 'value': 0.09325557107446522, 'sys_value': 214.24900057110224, 'count': 6}
{'timestamp': 1678093102864, 'pid': 5020, 'value': 0.0028057081157343753, 'sys_value': 133.65987460815046, 'count': 6}

$ pyidevice instruments sysmontap -b com.aaa.bbb -proc_filter physFootprint,cpuUsage --processes --sort cpuUsage
**[('xxx', {'cpuUsage': 1.1589278758745025, 'pid': 5020, 'physFootprint': 115983280, 'name': 'xxx'})]**
[('xxx', {'cpuUsage': 0.33430576602225337, 'pid': 5020, 'physFootprint': 32736136, 'name': 'xxx'})]
[('xxx', {'cpuUsage': 0.013103374504391915, 'pid': 5020, 'physFootprint': 32801672, 'name': 'xxx'})]
[('xxx', {'cpuUsage': 0.018070079154281122, 'pid': 5020, 'physFootprint': 32899976, 'name': 'xxx'})]
[('xxx', {'cpuUsage': 0.12342693958897713, 'pid': 5020, 'physFootprint': 33178504, 'name': 'xxx'})]
[('xxx', {'cpuUsage': 0.41109598427681404, 'pid': 5020, 'physFootprint': 33325960, 'name': 'xxx'})]
[('xxx', {'cpuUsage': 0.09325557107446522, 'pid': 5020, 'physFootprint': 33473416, 'name': 'xxx'})]
[('xxx', {'cpuUsage': 0.0028057081157343753, 'pid': 5020, 'physFootprint': 33473416, 'name': 'xxx'})]

Reproduce the comparison with `tidevice perf -o cpu -B com.aaa.bbb` and `pyidevice instruments sysmontap -b com.aaa.bbb -proc_filter physFootprint,cpuUsage --processes --sort cpuUsage`, paying attention to when the app starts. Trace how the first performance sample is collected and determine whether the missing row is expected startup timing behavior. Done means the first sample is explained or the two command outputs include equivalent data.

Written by the indexing model from the issue text.