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I'm on Ubuntu 11.04 (upgraded from 10.10) and suffering really high bootup times. It got so annoying, that I decided to dive into bootchart analysis myself. Therefore I installed bootchart and restarted the system which generated this chart.

However, I'm not really experienced in reading such stuff. What causes the long bootup sequence?

Edit:

Here is the output of hdparm -i /dev/sda:

/dev/sda:

Model=SAMSUNG HD501LJ, FwRev=CR100-12, SerialNo=S0MUJ1EQ102621
Config={ Fixed }
RawCHS=16383/16/63, TrkSize=34902, SectSize=554, ECCbytes=4
BuffType=DualPortCache, BuffSize=16384kB, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=976773168
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes:  pio0 pio1 pio2 pio3 pio4 
DMA modes:  mdma0 mdma1 mdma2 
UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6 
AdvancedPM=no WriteCache=enabled
Drive conforms to: unknown:  ATA/ATAPI-3,4,5,6,7

* signifies the current active mode

And here the output of hdparm -tT /dev/sda

/dev/sda:
Timing cached reads:   2410 MB in  2.00 seconds = 1205.26 MB/sec
Timing buffered disk reads: 258 MB in  3.02 seconds =  85.50 MB/sec
ubuntudroid
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1 Answers1

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I found similar issues and after installing and fretting with the bootchart app I had a look at Georges Techblog here which covered the issues of Unity boot time:

Georges tech blog

They really seemed to get to grips with issues that I could then use to really improve my boot time with unity. Some I understood, some I have to say ...were beyond my understanding

Apologies if you have seen this before but he also did a more recent update which may help

I would also as a matter of course look at what things you have starting up automatically

Hit the super key (windows key) and type Startup Applications and you can then (de)select things you do not need to start up ...it might also help alongside the more complex things

andybleaden
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