I cannot lie, fork() is one of my favorite syscalls.
-
fun fact: most syscalls that operate on existing file descriptors (read(), write(), ...) become slower if the file descriptor table is shared with another task (more precisely, if its refcount is >1), which is the case if you're using normal threads
-
-
That's quite an impressive difference :)
-
it comes from this microoptimization in __fget_light(), saving two atomic operations on the struct file (with the associated cacheline bouncing) per syscall: https://elixir.bootlin.com/linux/v4.20.12/source/fs/file.c#L743 …
- Još 1 odgovor
Novi razgovor -
Čini se da učitavanje traje već neko vrijeme.
Twitter je možda preopterećen ili ima kratkotrajnih poteškoća u radu. Pokušajte ponovno ili potražite dodatne informacije u odjeljku Status Twittera.