Bug#576649: [apt]: Very slow apt-get update
Hi David,
On Tue, Apr 06, 2010 at 07:20:51PM +0200, David Kalnischkies wrote:
> 2010/4/6 Jens Seidel <jensseidel@users.sf.net>:
> > Calling apt-get update on my OpenMoko phone (armel, 128MB RAM, sd card)
> > takes forever:
> Into the blue: Do you have a swap file?
Yep, I have two swap files in Debian: 256M + 128M.
Mhm, now I think I remember I performed the slow updates in the chroot once
I booted SHR-U where I do not use a swap (as the large sd card is not always
inserted). But does it matter? If the free RAM is not sufficient the kernel
would start killing processes which I didn't observed.
> Which software powers your brick?
Current Debian unstable + experimental + http://pkg-fso.alioth.debian.org.
Kernel 2.6.29-20100118.gita15608f2.
> Is your mircosd card okay?
I think so, the filesystem is OK (fsck.ext3 -f /dev/mmcblk0p2 succeeds).
> My neo hardly needs 20 minutes for an "update" and i have pdiffs
> enabled… e.g. in my recent run in which ~ 15 pdiffs were applied:
> Es wurden 2.325kB in 6Min 59s geholt (5.545B/s)
As far as I remember using pdiffs is not recommended on the freerunner. I
read this in the openmoko wiki and experienced the same in the past (months
ago).
# cat /etc/apt/apt.conf
Acquire::PDiffs "false";
Now I updated from Debian again (with enabled swap) with much better results:
Es wurden 12,3MB in 2Min 25s geholt (84,6kB/s)
Will keep en eye on it and test later without swap ...
Jens
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