Re: [systemd-devel] Reduce unit-loading time

2015-05-26 Thread Filipe Brandenburger
Hi, On Sun, May 24, 2015 at 8:41 PM, cee1 fykc...@gmail.com wrote: I tried ureadahead, but got following error: write(2, ureadahead: Error while tracing:..., 59ureadahead: Error while tracing: No such file or directory Needs an out-of-tree kernel patch? Yes, ureadahead needs an out-of-tree

Re: [systemd-devel] Reduce unit-loading time

2015-05-26 Thread Lennart Poettering
On Tue, 26.05.15 09:49, Filipe Brandenburger (filbran...@google.com) wrote: Hi, On Sun, May 24, 2015 at 8:41 PM, cee1 fykc...@gmail.com wrote: I tried ureadahead, but got following error: write(2, ureadahead: Error while tracing:..., 59ureadahead: Error while tracing: No such file or

Re: [systemd-devel] Reduce unit-loading time

2015-05-24 Thread cee1
2015-05-20 1:01 GMT+08:00 Martin Pitt martin.p...@ubuntu.com: Hey cee1, cee1 [2015-05-18 23:52 +0800]: At the first glance, I find ureadahead has some difference compared with the readahead once in systemd, IIRC: Yes, for sure. systemd's was improved quite a bit. ureadahead is mostly

Re: [systemd-devel] Reduce unit-loading time

2015-05-19 Thread Martin Pitt
Hey cee1, cee1 [2015-05-18 23:52 +0800]: At the first glance, I find ureadahead has some difference compared with the readahead once in systemd, IIRC: Yes, for sure. systemd's was improved quite a bit. ureadahead is mostly unmaintained, but it works well enough so we didn't bother to put work

Re: [systemd-devel] Reduce unit-loading time

2015-05-19 Thread Cristian Rodríguez
On Mon, May 18, 2015 at 7:24 AM, cee1 fykc...@gmail.com wrote: 2015-05-17 17:45 GMT+08:00 Martin Pitt martin.p...@ubuntu.com: Hello cee, cee1 [2015-05-16 0:46 +0800]: Thanks for the suggestion, it was other processes running in parallel which presumably consuming lots of IO, after sending

Re: [systemd-devel] Reduce unit-loading time

2015-05-19 Thread Cristian Rodríguez
On Tue, May 19, 2015 at 5:39 PM, Cristian Rodríguez crrodrig...@opensuse.org wrote: On Mon, May 18, 2015 at 7:24 AM, cee1 fykc...@gmail.com wrote: 2015-05-17 17:45 GMT+08:00 Martin Pitt martin.p...@ubuntu.com: Hello cee, cee1 [2015-05-16 0:46 +0800]: Thanks for the suggestion, it was other

Re: [systemd-devel] Reduce unit-loading time

2015-05-18 Thread cee1
Hi Martin, At the first glance, I find ureadahead has some difference compared with the readahead once in systemd, IIRC: 1. ureadahead.service is in default.target, which means ureadahead starts later than systemd's? 2. The original systemd readahead has collect and replay two services, and

Re: [systemd-devel] Reduce unit-loading time

2015-05-18 Thread Lennart Poettering
On Mon, 18.05.15 18:24, cee1 (fykc...@gmail.com) wrote: 2015-05-17 17:45 GMT+08:00 Martin Pitt martin.p...@ubuntu.com: Hello cee, cee1 [2015-05-16 0:46 +0800]: Thanks for the suggestion, it was other processes running in parallel which presumably consuming lots of IO, after sending

Re: [systemd-devel] Reduce unit-loading time

2015-05-18 Thread Martin Pitt
Hello cee1, cee1 [2015-05-18 18:24 +0800]: Does the readahead-*.service shipped with systemd work for you? systemd dropped the builtin readahead in 217. It's reasonably easy to get back by reverting the drop readahead patches, but carrying that patch in packages is fairly intrusive. In Ubuntu

Re: [systemd-devel] Reduce unit-loading time

2015-05-18 Thread cee1
2015-05-17 17:45 GMT+08:00 Martin Pitt martin.p...@ubuntu.com: Hello cee, cee1 [2015-05-16 0:46 +0800]: Thanks for the suggestion, it was other processes running in parallel which presumably consuming lots of IO, after sending SIGSTOP at the first (and SIGCONT later), the unit loading time

Re: [systemd-devel] Reduce unit-loading time

2015-05-17 Thread Martin Pitt
Hello cee, cee1 [2015-05-16 0:46 +0800]: Thanks for the suggestion, it was other processes running in parallel which presumably consuming lots of IO, after sending SIGSTOP at the first (and SIGCONT later), the unit loading time is decreased to ~100ms. You probably want to use some readahead

Re: [systemd-devel] Reduce unit-loading time

2015-05-15 Thread cee1
, -Original Message- From: systemd-devel [mailto:systemd-devel- boun...@lists.freedesktop.org] On Behalf Of cee1 Sent: Wednesday, May 13, 2015 11:52 AM To: systemd Mailing List Subject: [systemd-devel] Reduce unit-loading time Hi all, We're trying systemd to boot up an ARM board

Re: [systemd-devel] Reduce unit-loading time

2015-05-13 Thread Hoyer, Marko (ADITG/SW2)
Hi, -Original Message- From: systemd-devel [mailto:systemd-devel- boun...@lists.freedesktop.org] On Behalf Of cee1 Sent: Wednesday, May 13, 2015 11:52 AM To: systemd Mailing List Subject: [systemd-devel] Reduce unit-loading time Hi all, We're trying systemd to boot up an ARM

[systemd-devel] Reduce unit-loading time

2015-05-13 Thread cee1
Hi all, We're trying systemd to boot up an ARM board, and find systemd uses more than one second to load units. Comparing with the init of Android on the same board, it manages to boot the system very fast. We guess following factors are involved: 1. systemd has a much bigger footprint than the

Re: [systemd-devel] Reduce unit-loading time

2015-05-13 Thread Lennart Poettering
On Wed, 13.05.15 17:51, cee1 (fykc...@gmail.com) wrote: Hi all, We're trying systemd to boot up an ARM board, and find systemd uses more than one second to load units. Comparing with the init of Android on the same board, it manages to boot the system very fast. We guess following