| Message ID | 1342632949-4318-1-git-send-email-bryan.wu@canonical.com |
|---|---|
| State | New |
| Headers | show |
hi, Am Donnerstag, den 19.07.2012, 01:35 +0800 schrieb Bryan Wu: ... > +CONFIG_DEFAULT_IOSCHED="deadline" > CONFIG_DEFAULT_IO_DELAY_TYPE=1 > CONFIG_DEFAULT_MESSAGE_LOGLEVEL=4 ... from quantal on we default to "normal" images (live for desktop and alternate(nopefully plus squashfs) for server as on x86/amd64) with that change we will default to install to actual hard disks (USB or if the board has it to SATA). will switching the default scheduler to deadline make sense in this environment ? ciao oli
hi Am Donnerstag, den 19.07.2012, 11:52 +0200 schrieb Oliver Grawert: ... whoops, sorry, that was supposed to be a reply to the omap4 commit indeed... ciao oli
Hi Oliver, The whole story is after we unify -generic and -server flavor kernel together, we make CFQ as default for everyone. But for most server usage, deadline should be default. Colin did a heavy CFQ and deadline IO scheduler benchmarking. As a result, deadline and CFQ has not much big difference. However, deadline is required when system load is very heavy and critical task should not be blocked for a long time. So in this patch, we just change deadline for all Ubuntu kernel and heavy testing are always welcome. Thanks, -Bryan On Thu, Jul 19, 2012 at 5:55 PM, Oliver Grawert <ogra@ubuntu.com> wrote: > hi > Am Donnerstag, den 19.07.2012, 11:52 +0200 schrieb Oliver Grawert: > ... > > whoops, sorry, that was supposed to be a reply to the omap4 commit > indeed... > > ciao > oli > > -- > kernel-team mailing list > kernel-team@lists.ubuntu.com > https://lists.ubuntu.com/mailman/listinfo/kernel-team >
diff --git a/debian.master/config/config.common.ubuntu b/debian.master/config/config.common.ubuntu index 3c92acb..12547a5 100644 --- a/debian.master/config/config.common.ubuntu +++ b/debian.master/config/config.common.ubuntu @@ -1291,12 +1291,12 @@ CONFIG_DECOMPRESS_GZIP=y CONFIG_DECOMPRESS_LZMA=y CONFIG_DECOMPRESS_LZO=y CONFIG_DECOMPRESS_XZ=y -CONFIG_DEFAULT_CFQ=y +# CONFIG_DEFAULT_CFQ is not set CONFIG_DEFAULT_CUBIC=y -# CONFIG_DEFAULT_DEADLINE is not set +CONFIG_DEFAULT_DEADLINE=y CONFIG_DEFAULT_HOSTNAME="(none)" CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=120 -CONFIG_DEFAULT_IOSCHED="cfq" +CONFIG_DEFAULT_IOSCHED="deadline" CONFIG_DEFAULT_IO_DELAY_TYPE=1 CONFIG_DEFAULT_MESSAGE_LOGLEVEL=4 # CONFIG_DEFAULT_NOOP is not set
Signed-off-by: Bryan Wu <bryan.wu@canonical.com> --- debian.master/config/config.common.ubuntu | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)