From: Eric Dumazet <[email protected]>
Date: Tue, 13 Sep 2005 09:04:32 +0200
> And if your process has many files opened, the cost (read : latency)
> of open() can be very high, finding a zero bit in a large bit array.
...
> I wish a process param could allow open() to take any free fd
> available, not > the lowest one. One can always use fcntl(fd, F_DUPFD,
> slot) to move a fd on a > specific high slot and always keep the 64
> first fd slots free to speedup the > kernel part at
> open()/dup()/socket() time.
Why not just remember the lowest available free slot and start each
bitmap search there? This is a quite common technique.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
| |
 |