-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 04/28/2011 06:17 PM, Jan Kara wrote:
On Thu 28-04-11 13:35:13, Jeff Mahoney wrote:
-----BEGIN PGP SIGNED MESSAGE----- Jan Kara: - - patches.suse/readahead-request-tunables.patch This is dependent on SUSE-specific CONFIG_KERNEL_DESKTOP. General update of the defaults probably wouldn't pass. So I think we have to carry this one...
Ok, I had this one in mind if Suresh has any luck getting the tunable defaults upstream - or if we end up working with sysctls instead. An interesting side-idea might be to add the ability for the sysctl utility to load a kernel-specific sysctl.conf that we ship with each flavor and then apply the system values on top of those, overriding the ones that collide. We'd get the benefits without the kernel patches.
- - patches.suse/raw_device_max_minors_param.diff OK, I'll try to push it upstream (although not sure through whom). Last time I tried to push it, I was told that the driver is going to be removed from upstream altogether but it seems to be still there so I think it may be time to revisit this.
[ Up for discussion ] - - patches.suse/file-capabilities-disable-by-default.diff [never submitted] - - patches.suse/connector-read-mostly - - patches.suse/ext3-barrier-default - - patches.suse/reiserfs-barrier-default Although I believe the above two would be sane defaults, I kind of feel it might be too late to change the defaults upstream. It would probably generate lots of bug reports of the type "my IO is suddently slower"...
I'm not convinced they actually *are* sane defaults for commodity hardware. Having to flush the entire cache for a barrier is a pretty heavyweight operation, especially with the sizes of caches growing on individual disks. In my own testing it seems like it's faster to disable the write cache and use regular buffer waits rather than flush the cache, but it's been a while since I've done that. - -Jeff - -- Jeff Mahoney SUSE Labs -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.17 (GNU/Linux) Comment: Using GnuPG with SUSE - http://enigmail.mozdev.org/ iEYEARECAAYFAk25/DwACgkQLPWxlyuTD7JxEQCfS9XkRUEn/l0PFVv6ffVCee24 8TAAoIJJ0yC0RUmalFz5CQjzWpf6jogX =N0GW -----END PGP SIGNATURE----- -- To unsubscribe, e-mail: opensuse-kernel+unsubscribe@opensuse.org For additional commands, e-mail: opensuse-kernel+help@opensuse.org