Re: mmap over nfs leads to excessive system load

[Kenny Simpson <theonetruekenny@yahoo.com>]

--- Trond Myklebust <trond.myklebust@fys.uio.no> wrote:
> OK, please back out the patch that I sent you, and try this one instead.

With jumbo frames, the profile is even happier:
(throughput is a little higher and CPU usage is a little lower too)

samples  %        symbol name
74463    12.1129  skb_copy_bits
30351     4.9372  __lookup_tag
24520     3.9887  _spin_lock
20353     3.3108  _spin_lock_irqsave
19306     3.1405  __copy_from_user_ll
15393     2.5040  __copy_user_zeroing_intel
10014     1.6290  isolate_lru_pages
9002      1.4644  sub_preempt_count
7997      1.3009  debug_smp_processor_id
7691      1.2511  schedule
6999      1.1385  shrink_list
6699      1.0897  tcp_sendmsg
6669      1.0848  radix_tree_delete
6532      1.0626  _write_lock_irqsave
6413      1.0432  __mod_page_state
6170      1.0037  acpi_safe_halt

Again... this is excellent.
So will this make 2.6.16? or can this be called a bug fix for 2.6.15?

-Kenny



		
__________________________________ 
Yahoo! FareChase: Search multiple travel sites in one click.
http://farechase.yahoo.com
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/