During kernel package builds compressing debs often takes a very long time without any feedback.
I was considering to start patching dpkg-deb to fork and compress things via pv to get progress output in the build logs. I can't remember where, but it would be nice for pv to output info after a delay. I.e. if operation is quick don't bother, but after like 10s start showing progress output would be nice. On Fri, 22 Apr 2022, 17:58 Bryce Harrington, <bryce.harring...@canonical.com> wrote: > The Ubuntu Server team is looking at several potential items to promote > to main, including cli admin tools that might have broad usefulness. > One of these we're on the fence about and would like broader input. > > pv, 'Pipe Viewer' is a command line utility that essentially copies > stdin to stdout, and displays an animated progress bar. > > Standard example is compressing a large file, e.g.: > > $ pv Mail/spam.assassin | gzip > /tmp/spam.gz > 31.3MiB 0:00:01 [31.3MiB/s] [===========> ] > 31% ETA 0:00:02 > > pv can also be used in the middle of pipelines (although since it > doesn't know the stream's size it can't estimate % progress): > > $ mysqldump -uroot -p database1 | pv | gzip -9 > database1.sql.gz > 53.7MiB 0:00:01 [29.7MiB/s] [ <=> > ] > > Overview: https://catonmat.net/unix-utilities-pipe-viewer > Man page: https://linux.die.net/man/1/pv > LP page: https://launchpad.net/ubuntu/+source/pv > > > Googling indicates that pv comes up very commonly as a general purpose > solution to displaying progress, although there do appear to be > main-provided solutions for at least some common situations. For simply > copying files, there is already rsync which has --progress and --status > options. For creating tarballs, tar has a --checkpoint option, though > it's not fancy. For copying streams, dd is in main, which has a > status=progress option that animates the bytes copied (but not %'s or > visual bars). > > That said, pv looks like it would be a relatively light addition to > main; it's written in C, appears to have an active upstream, and looks > pretty self-contained. A MIR for pv looks like it would be reasonably > straightforward to file. With it in main, other packages could rely on > having it available for providing progress info, and would make it more > at hand for scripting, tutorials/howto's, tech support, etc. > > > Does this look useful enough to you that it should be made available by > default? Are there alternatives you feel would be better to look at? > Or other considerations that need made before deciding? > > Thanks, > Bryce > > > > > > -- > ubuntu-devel mailing list > ubuntu-devel@lists.ubuntu.com > Modify settings or unsubscribe at: > https://lists.ubuntu.com/mailman/listinfo/ubuntu-devel >
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