Re: [systemd-devel] [HEADS-UP] Intent to remove readahead from systemd
El vie, 26-09-2014 a las 08:58 +0200, Tom Gundersen escribió: > On Thu, Sep 25, 2014 at 6:40 PM, Pacho Ramos wrote: > > El jue, 25-09-2014 a las 16:44 +0200, Tom Gundersen escribió: > >> On Thu, Aug 14, 2014 at 7:16 PM, Lennart Poettering > >> wrote: > >> > So, I think with the release after the upcoming one we should just > >> > remove it from the systemd package and just throw it on the pile of > >> > historic cruft. So, yeah, here's the advance warning that this will be > >> > happening... > >> > > >> > (Well, unless somebody from the community who cares and wants to invest > >> > the necessary time in it steps up and gives it the love it really > >> > needs. If nobody does until that release, I will delete the component > >> > from systemd). > >> > >> No one objected to this, so I pushed the patch deleting it. If anyone > >> wants to resurrect this in an external repo, it should be simple > >> enough to extract it from git. > >> > >> Cheers, > >> > >> Tom > >> ___ > >> systemd-devel mailing list > >> systemd-devel@lists.freedesktop.org > >> http://lists.freedesktop.org/mailman/listinfo/systemd-devel > > > > Is there any other readahead implementation around that we could migrate > > to? Well, not sure many laptops with SSD are sold in your area but, at > > least in mine, most people still have (and buy) setups with rotational > > hard drives that have a clear gain when running readahead (well, I can > > see it every time I reboot and login on gnome-shell if I don't use > > readahead) > > I think the best bet would be someone who understands/knows/uses this > stuff to resurrect systemd-readahead in a third-party repo and > maintain it there. AFAIK, it was the best of the available options. > > Cheers, > > Tom Yeah, the problem was that I ended up using it as it looked to be the best option for doing this (even being "stalled"), the problem is that, even if I "use" it actively, I don't "understand/know" it :S Lets see if anyone finally is able to, at least, repackage it outside systemd (even simply keeping it, for now, as good (=> better than other alternatives) as it's currently) Best regards ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
Re: [systemd-devel] [HEADS-UP] Intent to remove readahead from systemd
On 26/09/14 09:58, Tom Gundersen wrote: > On Thu, Sep 25, 2014 at 6:40 PM, Pacho Ramos wrote: >> El jue, 25-09-2014 a las 16:44 +0200, Tom Gundersen escribió: >>> On Thu, Aug 14, 2014 at 7:16 PM, Lennart Poettering >>> wrote: So, I think with the release after the upcoming one we should just remove it from the systemd package and just throw it on the pile of historic cruft. So, yeah, here's the advance warning that this will be happening... (Well, unless somebody from the community who cares and wants to invest the necessary time in it steps up and gives it the love it really needs. If nobody does until that release, I will delete the component from systemd). >>> No one objected to this, so I pushed the patch deleting it. If anyone >>> wants to resurrect this in an external repo, it should be simple >>> enough to extract it from git. >>> >>> Cheers, >>> >>> Tom >>> ___ >>> systemd-devel mailing list >>> systemd-devel@lists.freedesktop.org >>> http://lists.freedesktop.org/mailman/listinfo/systemd-devel >> Is there any other readahead implementation around that we could migrate >> to? Well, not sure many laptops with SSD are sold in your area but, at >> least in mine, most people still have (and buy) setups with rotational >> hard drives that have a clear gain when running readahead (well, I can >> see it every time I reboot and login on gnome-shell if I don't use >> readahead) > I think the best bet would be someone who understands/knows/uses this > stuff to resurrect systemd-readahead in a third-party repo and > maintain it there. AFAIK, it was the best of the available options. > > Cheers, > > Tom This sounds like the best option to me too, anyone can pick up the systemd-readahead code and create a e.g. github repository for it +1 - Samuli ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
Re: [systemd-devel] [HEADS-UP] Intent to remove readahead from systemd
On Thu, Sep 25, 2014 at 6:38 PM, Daurnimator wrote: > On 25 September 2014 10:44, Tom Gundersen wrote: >> >> I pushed the patch deleting it. > > > Please ensure > http://www.freedesktop.org/software/systemd/man/sd-readahead.html is updated > ASAP with a deprecation note. This page will go away next time the man-pages are regenerated. Please note that the sd-readahead API was not provided by libsystemd.so (it was just a drop-in file), so there should be no issue with compatibility here. Cheers, Tom ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
Re: [systemd-devel] [HEADS-UP] Intent to remove readahead from systemd
On Thu, Sep 25, 2014 at 6:40 PM, Pacho Ramos wrote: > El jue, 25-09-2014 a las 16:44 +0200, Tom Gundersen escribió: >> On Thu, Aug 14, 2014 at 7:16 PM, Lennart Poettering >> wrote: >> > So, I think with the release after the upcoming one we should just >> > remove it from the systemd package and just throw it on the pile of >> > historic cruft. So, yeah, here's the advance warning that this will be >> > happening... >> > >> > (Well, unless somebody from the community who cares and wants to invest >> > the necessary time in it steps up and gives it the love it really >> > needs. If nobody does until that release, I will delete the component >> > from systemd). >> >> No one objected to this, so I pushed the patch deleting it. If anyone >> wants to resurrect this in an external repo, it should be simple >> enough to extract it from git. >> >> Cheers, >> >> Tom >> ___ >> systemd-devel mailing list >> systemd-devel@lists.freedesktop.org >> http://lists.freedesktop.org/mailman/listinfo/systemd-devel > > Is there any other readahead implementation around that we could migrate > to? Well, not sure many laptops with SSD are sold in your area but, at > least in mine, most people still have (and buy) setups with rotational > hard drives that have a clear gain when running readahead (well, I can > see it every time I reboot and login on gnome-shell if I don't use > readahead) I think the best bet would be someone who understands/knows/uses this stuff to resurrect systemd-readahead in a third-party repo and maintain it there. AFAIK, it was the best of the available options. Cheers, Tom ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
Re: [systemd-devel] [HEADS-UP] Intent to remove readahead from systemd
El jue, 25-09-2014 a las 16:44 +0200, Tom Gundersen escribió: > On Thu, Aug 14, 2014 at 7:16 PM, Lennart Poettering > wrote: > > So, I think with the release after the upcoming one we should just > > remove it from the systemd package and just throw it on the pile of > > historic cruft. So, yeah, here's the advance warning that this will be > > happening... > > > > (Well, unless somebody from the community who cares and wants to invest > > the necessary time in it steps up and gives it the love it really > > needs. If nobody does until that release, I will delete the component > > from systemd). > > No one objected to this, so I pushed the patch deleting it. If anyone > wants to resurrect this in an external repo, it should be simple > enough to extract it from git. > > Cheers, > > Tom > ___ > systemd-devel mailing list > systemd-devel@lists.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/systemd-devel Is there any other readahead implementation around that we could migrate to? Well, not sure many laptops with SSD are sold in your area but, at least in mine, most people still have (and buy) setups with rotational hard drives that have a clear gain when running readahead (well, I can see it every time I reboot and login on gnome-shell if I don't use readahead) ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
Re: [systemd-devel] [HEADS-UP] Intent to remove readahead from systemd
On 25 September 2014 10:44, Tom Gundersen wrote: > I pushed the patch deleting it. Please ensure http://www.freedesktop.org/software/systemd/man/sd-readahead.html is updated ASAP with a deprecation note. ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
Re: [systemd-devel] [HEADS-UP] Intent to remove readahead from systemd
On Thu, Aug 14, 2014 at 7:16 PM, Lennart Poettering wrote: > So, I think with the release after the upcoming one we should just > remove it from the systemd package and just throw it on the pile of > historic cruft. So, yeah, here's the advance warning that this will be > happening... > > (Well, unless somebody from the community who cares and wants to invest > the necessary time in it steps up and gives it the love it really > needs. If nobody does until that release, I will delete the component > from systemd). No one objected to this, so I pushed the patch deleting it. If anyone wants to resurrect this in an external repo, it should be simple enough to extract it from git. Cheers, Tom ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
Re: [systemd-devel] [HEADS-UP] Intent to remove readahead from systemd
On Thu, Aug 14, 2014 at 10:16 AM, Lennart Poettering wrote: > Heya, > > Since its early days systemd contained the systemd-readahead tool, whose > job was to improve boot times by reading files in their order on disk, > before they would actually be needed by applications. In times of SSD > the benefit of systemd-readahead is much less convincing, in many case > it actually slows things down. > > The fact is now that nobody really cares about systemd-readahead much > anymore. Nobody in the systemd team still works on a laptop with > rotating media, hence nobody tries to optimize it in any way. And it > probably needs a lot of looking after and love to still be useful as > general purpose systems, instead of just slowing them down... > > So, I think with the release after the upcoming one we should just > remove it from the systemd package and just throw it on the pile of > historic cruft. So, yeah, here's the advance warning that this will be > happening... > > (Well, unless somebody from the community who cares and wants to invest > the necessary time in it steps up and gives it the love it really > needs. If nobody does until that release, I will delete the component > from systemd). > > I fully understand that not everybody uses SSDs yet, and also that > theoretically doign systemd-readahead on SSD could be beneficial still > (since RAM is still orders of magnitude faster than SSDs), but it's > really not about that, it's about maintainership and giving the tool the > love it needs. > > heh, ouch X_X I can understand your sentiment, though. I've identified plenty of cases where readahead just isn't working out well at all, and the constant tweaking has left it ... quite a bit messy. Auke ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
[systemd-devel] [HEADS-UP] Intent to remove readahead from systemd
Heya, Since its early days systemd contained the systemd-readahead tool, whose job was to improve boot times by reading files in their order on disk, before they would actually be needed by applications. In times of SSD the benefit of systemd-readahead is much less convincing, in many case it actually slows things down. The fact is now that nobody really cares about systemd-readahead much anymore. Nobody in the systemd team still works on a laptop with rotating media, hence nobody tries to optimize it in any way. And it probably needs a lot of looking after and love to still be useful as general purpose systems, instead of just slowing them down... So, I think with the release after the upcoming one we should just remove it from the systemd package and just throw it on the pile of historic cruft. So, yeah, here's the advance warning that this will be happening... (Well, unless somebody from the community who cares and wants to invest the necessary time in it steps up and gives it the love it really needs. If nobody does until that release, I will delete the component from systemd). I fully understand that not everybody uses SSDs yet, and also that theoretically doign systemd-readahead on SSD could be beneficial still (since RAM is still orders of magnitude faster than SSDs), but it's really not about that, it's about maintainership and giving the tool the love it needs. Lennart -- Lennart Poettering, Red Hat ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
