Re: [PATCH] updated reiser4 - reduced cpu usage for writes by writing more than 4k at a time (has implications for generic write code and eventually for the IO layer)

I should add, you execute a lot more than 4k worth of instructions for
each of these 4k writes, thus performance is non-optimal.  This is why
bios exist in the kernel, because the io layer has a similar problem
when you send it only 4k at a time (of executing a lot more than 4k of
instructions per io submission).The way the io layer handles bios is not
as clean as it could be though, Nate can say more on that.
-
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/

---

• References:
  • [PATCH] updated reiser4 - reduced cpu usage for writes by writing more than 4k at a time (has implications for generic write code and eventually for the IO layer)
    • From: Hans Reiser <[email protected]>
  • Re: [PATCH] updated reiser4 - reduced cpu usage for writes by writing more than 4k at a time (has implications for generic write code and eventually for the IO layer)
    • From: Tom Vier <[email protected]>

• Prev by Date: Re: 4096 byte limit to /proc/PID/environ ?
• Next by Date: Re: Ingo's realtime_preempt patch causes kernel oops
• Previous by thread: Re: batched write
• Next by thread: [RFC][PATCH] md: Move stripe operations outside the spinlock (v2)
• Index(es):
  • Date
  • Thread

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]