| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <1404147574-17422-1-git-send-email-stratosk@semaphore.gr> Date: Mon, 30 Jun 2014 19:59:32 +0300 From: Stratos Karafotis <stratosk@...aphore.gr> To: rjw@...ysocki.net, viresh.kumar@...aro.org Cc: linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org Subject: [PATCH 0/2] cpufreq: ondemand: Eliminate the deadband effect Hi all, This patchset changes slightly the calculation of target frequency to eliminate the deadband effect (explained in patch 2 changelog) that it seems to slow down the CPU in low and medium loads. Patch 1 introduces a new relation (RELATION_C) for the next frequency selection, which chooses the closest frequency to target. Patch 2 is the actual change to ondemand governor. You may find graphs with the 'deadband' effect and benchmark results: https://docs.google.com/spreadsheets/d/16kDBh5lyc6YvBnoS1hUa1t2O38z0xrWvaEj5XtJ8auw/edit#gid=2072493052 Thanks Stratos Karafotis (2): cpufreq: Introduce new relation for freq selection cpufreq: ondemand: Eliminate the deadband effect in low loads drivers/cpufreq/cpufreq_ondemand.c | 11 +++++++---- drivers/cpufreq/freq_table.c | 12 +++++++++++- include/linux/cpufreq.h | 1 + 3 files changed, 19 insertions(+), 5 deletions(-) -- 1.9.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists