> > 905182 total 0.4741
> > 121426 csum_partial_copy_generic 474.3203
> Well, maybe take a look at this func and try to optimize it?
I don't know assembly that good - sorry.
> > 93633 default_idle 1800.6346
> > 74665 do_wp_page 111.1086
> What's this?
do_wp_page is Defined as a function in: mm/memory.c
comments from the file:
* This routine handles present pages, when users try to write
* to a shared page. It is done by copying the page to a new address
* and decrementing the shared-page counter for the old page.
* Goto-purists beware: the only reason for goto's here is that it results
* in better assembly code.. The "default" path will see no jumps at all.
* Note that this routine assumes that the protection checks have been
* done by the caller (the low-level page fault routine in most cases).
* Thus we can safely just mark it writable once we've done any necessary
* We also mark the page dirty at this point even though the page will
* change only once the write actually happens. This avoids a few races,
* and potentially makes it more efficient.
* We hold the mm semaphore and the page_table_lock on entry and exit
* with the page_table_lock released.
> > 65857 ide_intr 184.9916
> You have 1 ide_intr per 2 csum_partial_copy_generic... hmmm...
> how large is your readahead? I assume you'd like to fetch
> more sectors from ide per interrupt. (I hope you do DMA ;)
doing DMA - RAID-0 with 1MB chunk size on 4 disks.
> > 53636 handle_IRQ_event 432.5484
> > 21973 do_softirq 107.7108
> > 20498 e1000_intr 244.0238
> I know zero about networking, but why 120 000 csum_partial_copy_generic
> and inly 20 000 nic interrupts? That may be abnormal.
I don't know
Roy Sigurd Karlsbakk, Datavaktmester
ProntoTV AS - http://www.pronto.tv/
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