On 2015/06/25 11:40AM, Cong Wang wrote: > On Thu, Jun 25, 2015 at 11:27 AM, Naveen N. Rao > <naveen.n....@linux.vnet.ibm.com> wrote: > > > > The primary issue with CONFIG_SCHEDSTATS is the (slight) additional > > overhead it introduces, per Kconfig. Due to this, it is not enabled by > > default by some of the distro kernels. > > > > The overhead is same for CONFIG_TASK_DELAY_ACCT since the > core sched info code is protected by CONFIG_TASK_DELAY_ACCT > or CONFIG_TASK_DELAY_ACCT?
CONFIG_SCHEDSTATS enables a lot more scheduler statistics (/proc/schedstat) than just the task delay accounting enabled by CONFIG_TASK_DELAY_ACCT. So, no - the overhead is not the same. - Naveen -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
