Subject: Re: Initial benchmarks of some VJ ideas [mmap memcpy vs copy_to_user].

From: Rick Jones <[email-masked]>
Date: Thu, 11 May 2006 12:30:31 -0700

David S. Miller wrote:
> From: Evgeniy Polyakov <[email-masked]>
> Date: Thu, 11 May 2006 20:18:15 +0400
> 
> 
>>Here is profile result:
>>1463625  78.0003  poll_idle
>>19171     1.0217  _spin_lock_irqsave
>>15887     0.8467  _read_lock
>>14712     0.7840  kfree
>>13370     0.7125  ip_frag_queue
>>11896     0.6340  delay_pmtmr
>>11811     0.6294  _spin_lock
>>11723     0.6247  csum_partial
>>11399     0.6075  ip_frag_destroy
>>11063     0.5896  serial_in
>>10533     0.5613  skb_release_data
>>10524     0.5609  ip_route_input
>>10319     0.5499  __alloc_skb
> 
> 
> Too bad spinlocks are not inlined any longer, this makes oprofile
> output so much less useful.

But it is nice to see how much time is being spent in "locking"

rick jones