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I've been looking into fsync calls made by Firefox to understand how efficient it is with regards to filesystems.

I used strace to track the fsync calls made by the threads of Firefox over a browsing session and here's what I've found,

Total number of calls made

Calls made by each thread

Though Firefox created ~90 threads over the session, only 12 made fsync() calls.

Now how do I go about finding the specific function of these threads? Like, is the thread a tab, or is it some background Firefox process? Where should I start looking?

Rephrasing the question to help anyone out in the future, how do you find the specific function of a Firefox thread?

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