iB::Topic::Bootchart for DSL 4.2.5

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Topic: Bootchart for DSL 4.2.5, And other thoughts of mine

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curaga

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Posts: 2163
Joined: Feb. 2007

Posted: Feb. 15 2008,15:02

Dammit, I was wrong. Couldn't get disk stats to show. As I get -really- different output on 2.6 kernels from /proc/diskstats, it must be a 2.4 kernel thingy.

However, your data is very interesting. The chart for Juanito's usb frugal.

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There's no such thing as life. Those mean little jocks invented it ;)
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Windows is not a virus. A virus does something!

curaga

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Posts: 2163
Joined: Feb. 2007

Posted: Feb. 15 2008,15:10

Based on real-hardware boot data from Juanito I noticed:

- cpu usage is zero over 70% of the time. It's waiting for something, IO or a sleep command. Lots of room for improvement.
- pump is still started twice. I thought it was a Qemu quirk (wouldn't have been the first ;)), but it does do that. You only have one network device, right?
- smaller dsl_restore usage is explained by having a backup to restore
- boot speed is a lot better than in Qemu

the initial 17s wait is most probably the toram load phase

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There's no such thing as life. Those mean little jocks invented it ;)
-
Windows is not a virus. A virus does something!

Juanito

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Posts: 1601
Joined: Sep. 2005

Posted: Feb. 15 2008,16:10

Quote

You only have one network device, right?

- two, but the wireless needs ndiswrapper to be recognised and this is not loaded at boot.

Quote

the initial 17s wait is most probably the toram load phase

- it says 7s on the screen countdown...

curaga

Group: Members
Posts: 2163
Joined: Feb. 2007

Posted: Feb. 16 2008,09:02

Another thing. The initrd is in a 4mb file, but the ext2 filesystem created inside it is only 3mb. So, we're wasting space here either way, so it should either get expanded to 4mb (with no compressed size penalty, it's empty space) or be moved into a 3mb file.

--------------
There's no such thing as life. Those mean little jocks invented it ;)
-
Windows is not a virus. A virus does something!