Control -1 moreinfo Hi Pascal,
I tried to reproduce the issue in an lxc container, but did not observe a lot of stat calls: root@sid-uu:~# dpkg -i hello_2.10-1+deb9u1_amd64.deb dpkg: warning: downgrading hello from 2.10-2 to 2.10-1+deb9u1 (Reading database ... 15204 files and directories currently installed.) Preparing to unpack hello_2.10-1+deb9u1_amd64.deb ... Unpacking hello (2.10-1+deb9u1) over (2.10-2) ... Setting up hello (2.10-1+deb9u1) ... root@sid-uu:~# time strace -f -c unattended-upgrade --debug --verbose strace: Process 7208 attached ... All upgrades installed InstCount=0 DelCount=0 BrokenCount=0 Extracting content from /var/log/unattended-upgrades/unattended-upgrades-dpkg.log since 2019-10-10 12:32:00 % time seconds usecs/call calls errors syscall ------ ----------- ----------- --------- --------- ---------------- 66.25 0.877182 2587 339 1 wait4 12.31 0.162923 2201 74 24 poll 3.54 0.046883 919 51 link 3.15 0.041677 11 3506 240 read 2.91 0.038556 488 79 fsync ... Could you please add some more detailed reproduction steps? What release do you use, for example? Cheers, Balint Pascal Giard <[email protected]> ezt írta (időpont: 2019. okt. 10., Cs, 4:18): > > Dear maintainer, > > Recently unattended-upgrades started to consume a LOT more CPU time than > before. > > Similarly to the original report, I looked at what strace gets in terms of > statistics, here it is: > strace: Process 5193 detached > % time seconds usecs/call calls errors syscall > ------ ----------- ----------- --------- --------- ---------------- > 100,00 4,762247 2 2288315 1703451 stat > 0,00 0,000051 0 100 read > 0,00 0,000015 0 20 openat > 0,00 0,000008 0 20 close > 0,00 0,000005 0 20 fstat > 0,00 0,000005 0 20 fcntl > ------ ----------- ----------- --------- --------- ---------------- > 100.00 4,762331 2288495 1703451 total > > Looks odd, no? > > It is so bothering that for now I've disabled unattended-upgrades on all 3 > laptops. Manual update + upgrade requires a fraction of the resources > currently required by unattended-upgrades. > > I hope this issue gets sorted out. Please let me know if there's something > else I can do to provide useful information. > > Thanks, > > -Pascal > -- > Homepage (http://pascal.giard.info) > École de technologie supérieure (http://etsmtl.ca) > >
