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私は以下のようなiOSでメトリクスを探していましたが、まだ成功していません。このUnixメトリクス環境に新しいので、私は本当に始まりになるか、 。おかげさまで task_wait_state_info
の詳細はiOSのCPUのI/Oメトリックを取得する
1.system.io.util - The percent of time the CPU spent waiting for IO operations to complete.
2.system.cpu.iowait - The percent of CPU time during which I/O requests were issued to the device
以下のように利用できる構造体があります:
struct task_wait_state_info {
uint64_t total_wait_state_time; /* Time that all threads past and present have been in a wait state */
uint64_t total_wait_sfi_state_time; /* Time that threads have been in SFI wait (should be a subset of total wait state time */
uint32_t _reserved[4];
};
task_wait_state_info_data_t waittime;
NSLog(@"Wait time : %llu",waittime.total_wait_state_time);
が、これは1.system.io.util
と同じ待ち時間ですか?