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Re: Parallel Booting



Bill Nottingham schrieb:
Bill Nottingham (notting redhat com) said:
- where are the benchmarks? What's the actual gain?

Not seeing any other benchmarks, I decided to test this.

Fairly standard box - P4, ata_piix, 1G memory. Stock desktop install, fully
up to date with updates and updates-testing as of this afternoon.

A 'normal' boot to gdm is about 56.9 seconds. I installed
prcsys, and edited the startup scripts to add LSB dependencies
as attached.

I then booted with prcsys and parallel init. The new boot time was...
56.3 and 56.6 seconds.

With:

S12syslog
S13ip6tables
S13iptables
S14network
S25netfs
S26auditd
S26messagebus
S27setroubleshoot
S55sshd
S98haldaemon
S99local

/etc/rc.d/rc takes:
8.5s in normal mode
6s in parallel startup


So, for all this work, we get a 0.6%-1.1% speedup.

so for me thats 140% speedup :)

> Oh, and we get
62 AVCs from SELinux in the process. What's the point of this again?

for that, I now have a fix.


- how would this be useful for the case where facilities that are provided
  are determined at runtime (say, NetworkManager providing $network instead
  of /etc/init.d/network, or $remote_fs being provided by either rc.sysinit
  or /etc/init.d/netfs, depending on configuration).

yep, tbd

>>   Similarly, you may
  want a meta-dependency for 'authorization available', which would be
  at different times depending on whether or not you're using local
  passwords, KRB5, etc.

yep, tbd

- does this work with dbus system activation?

yep, tbd


I also don't see how it handles either of these.

Bill


Which system does fullfill all of these requirements yet?

Harald

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