Bug#917167: systemd: 240 breaks kde (rakes ages to launch)

[Baptiste BEAUPLAT]

Dear maintainers,

This issue seems related to #917168, feel free to merge it.

For the 100% cpu, I think the problem is here in kinit:

https://github.com/KDE/kinit/blob/master/src/kdeinit/kinit.cpp#L163

```c
/*
 * Clean up the file descriptor table by closing all file descriptors
 * that are still open.
 *
 * This function is called very early in the main() function, so that
 * we don't leak anything that was leaked to us.
 */
static void cleanup_fds()
{
    int maxfd = FD_SETSIZE;
    struct rlimit rl;
    if (getrlimit(RLIMIT_NOFILE, &rl) == 0) {
        maxfd = rl.rlim_max;
    }
    for (int fd = 3; fd < maxfd; ++fd) {
#if KDEINIT_OOM_PROTECT
        if (fd != oom_pipe)
#endif
            close(fd);
    }
}
```

Has anything changed on the limits?

best regards,

-- 
Baptiste BEAUPLAT - lyknode

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