Re: Re: dpkg taking a bit too long ...
Hi all, (please cc) Theodore Ts'o wrote on Oct 5: >> real 0m37.751s >> user 0m7.428s >> sys 0m12.374s >> >> That's on ext4/nvme with no eatmydata. Perhaps time to perform a smart test >> on your disk? > >Except Norbert was reporting 100% (and 15 minutes) of CPU time > >Norbert, what file system are you using? Sorry for the late reply, I am not subscribed to debian-devel and just realized the answers. So I am running a btrfs multiple device, that is, the btrfs root file system spans currently 8 disks (mix of NVMe and SSD). Furthermore, it is running btrfs raid1 over the disks. Normally response time is extremely fast, and the current case was an exception I haven't seen before. (please cc) Best Norbert -- PREINING Norbert https://www.preining.info Fujitsu Research + IFMGA Guide + TU Wien + TeX Live + Debian Dev GPG: 0x860CDC13 fp: F7D8 A928 26E3 16A1 9FA0 ACF0 6CAC A448 860C DC13
Re: dpkg taking a bit too long ...
On Tue, Oct 05, 2021 at 04:09:12PM +0200, Jonathan Carter wrote: > real 0m37.751s > user 0m7.428s > sys 0m12.374s > > That's on ext4/nvme with no eatmydata. Perhaps time to perform a smart test > on your disk? Except Norbert was reporting 100% (and 15 minutes) of CPU time Norbert, what file system are you using? - Ted
Re: dpkg taking a bit too long ...
On 2021/10/05 14:24, Norbert Preining wrote: $ time eatmydata dpkg -i /var/cache/apt/archives/papirus-icon-theme_20211001-1_all.deb (Reading database ... 1215786 files and directories currently installed.) Preparing to unpack .../papirus-icon-theme_20211001-1_all.deb ... Unpacking papirus-icon-theme (20211001-1) over (20210901-1) ... Setting up papirus-icon-theme (20211001-1) ... real15m28.611s user0m12.769s sys 15m17.049s $ It took a long time here too but not nearly as long as that: $ time sudo dpkg -i /var/cache/apt/archives/papirus-icon-theme_20210901-1_all.deb Selecting previously unselected package papirus-icon-theme. (Reading database ... 471201 files and directories currently installed.) Preparing to unpack .../papirus-icon-theme_20210901-1_all.deb ... Unpacking papirus-icon-theme (20210901-1) ... Setting up papirus-icon-theme (20210901-1) ... real0m37.751s user0m7.428s sys 0m12.374s That's on ext4/nvme with no eatmydata. Perhaps time to perform a smart test on your disk? -Jonathan
Re: dpkg taking a bit too long ...
Norbert Preining, le mar. 05 oct. 2021 21:24:36 +0900, a ecrit: > $ time eatmydata dpkg -i > /var/cache/apt/archives/papirus-icon-theme_20211001-1_all.deb > (Reading database ... 1215786 files and directories currently installed.) > Preparing to unpack .../papirus-icon-theme_20211001-1_all.deb ... > Unpacking papirus-icon-theme (20211001-1) over (20210901-1) ... > Setting up papirus-icon-theme (20211001-1) ... > > real15m28.611s $ dpkg -L papirus-icon-theme| wc -l 106800 I'm not completely surprised that writing a hundred thousand files takes some time in whatever information system. Samuel
dpkg taking a bit too long ...
Hi all (please Cc) Ok, that is fun: $ time eatmydata dpkg -i /var/cache/apt/archives/papirus-icon-theme_20211001-1_all.deb (Reading database ... 1215786 files and directories currently installed.) Preparing to unpack .../papirus-icon-theme_20211001-1_all.deb ... Unpacking papirus-icon-theme (20211001-1) over (20210901-1) ... Setting up papirus-icon-theme (20211001-1) ... real15m28.611s user0m12.769s sys 15m17.049s $ That is on SSD, with eatmydata. I checked iotop-c during these 15min, a ridiculuously small amount of I/O was going on, but dpkg was 15min at 100% CPU. Is this **true** or am I getting crazy? That cannot be by design, or? Best Norbert -- PREINING Norbert https://www.preining.info Fujitsu Research + IFMGA Guide + TU Wien + TeX Live + Debian Dev GPG: 0x860CDC13 fp: F7D8 A928 26E3 16A1 9FA0 ACF0 6CAC A448 860C DC13
