ZFS on top of GELI / Intel Atom 330 system

[Ivan Voras]

Emil Mikulic wrote:
> On Fri, May 29, 2009 at 12:47:38PM +0200, Morgan Wesstr?m wrote:
>> You can benchmark the encryption subsytem only, like this:
>>
>> # kldload geom_zero
>> # geli onetime -s 4096 -l 256 gzero
>> # sysctl kern.geom.zero.clear=0
>> # dd if=/dev/gzero.eli of=/dev/null bs=1M count=512
> 
> I don't mean to take this off-topic wrt -stable but just
> for fun, I built a -current kernel with dtrace and did:
> 
> 	geli onetime gzero
> 	./hotkernel &
> 	dd if=/dev/zero of=/dev/gzero.eli bs=1m count=1024
> 	killall dtrace
> 	geli detach gzero
> 
> The hot spots:
> [snip stuff under 0.3%]
> kernel`g_eli_crypto_run                                    50   0.3%
> kernel`_mtx_assert                                         56   0.3%
> kernel`SHA256_Final                                        58   0.3%
> kernel`rijndael_encrypt                                    72   0.4%
> kernel`_mtx_unlock_flags                                   74   0.4%
> kernel`rijndael128_encrypt                                 74   0.4%
> kernel`copyout                                             92   0.5%
> kernel`_mtx_lock_flags                                     93   0.5%
> kernel`bzero                                              114   0.6%
> kernel`spinlock_exit                                      240   1.3%
> kernel`bcopy                                              325   1.7%
> kernel`sched_idletd                                       810   4.3%
> kernel`swcr_process                                      1126   6.0%
> kernel`SHA256_Transform                                  1178   6.3%
> kernel`rijndaelEncrypt                                   5574  29.7%
> kernel`acpi_cpu_c1                                       8383  44.6%

Hi,

What is the meaning of counts? Number of calls made or time?

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