Pardon my ignorance, but what do these numbers mean and what information is deductible from them?
- Dan Naumov > 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% > > I had to build crypto and geom_eli into the kernel to get proper > symbols. > > References: > http://wiki.freebsd.org/DTrace > http://www.brendangregg.com/DTrace/hotkernel > > --Emil
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