On an idle system with 512M memory and 768M swap, while /etc/cron.weekly
/apt-xapian-index was running, I used free to see memory and swap used.
It rose to then peaked at this:
total used free
Mem: 503528 497736 5792
Swap: 786428 231196 555232
Total used memory is 728M.
After ending, it immediately dropped back to this:
total used free
Mem: 503528 259160 244368
Swap: 786428 224484 561944
Total used memory is 483M.
I conclude that apt-xapian-index consumes the difference, which is 245M.
Running "apt-cache stats" I see at the end "Total space accounted for:
26.0 M".
Therefore, it takes 245M to sort and index 26M of information. This
seems conclusive that the algorithms, containers, and functions chosen
are very inefficient. It should definitely not require 10 times the
memory space of what is being indexed.
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/363695
Title:
update-apt-xapian-index uses too much CPU and memory
To manage notifications about this bug go to:
https://bugs.launchpad.net/apt/+bug/363695/+subscriptions
--
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
