pv/doc/TODO.md

Things still to do. (GH#n) indicates the Github issue tracker number.

Bugs

• (GH#5) Transfer IPC leadership on exit of leader
• (GH#13) Use clock_gettime() in ETA calculation to cope with machine suspend/resume (Mateju Miroslav)
• (GH#16) Show days in same format in ETA as in elapsed time
• (GH#18) No output in Cygwin from 1.6.19 onwards (Jacek M. Holeczek)
• (GH#20) Terminal state is not restored correctly in all cases (VA)
• (GH#23) No output with "-f" when run in background after 1.6.6 (gray)
• (GH#24) Race condition with multiple "pv -c" leaves terminal state inconsistent (Lars Ellenberg, Viktor Ashirov)
• (GH#26) Correct "-n" behaviour when going past 100% of "-s" size (Marcel)
• (GH#27) Rate limit downgrade can take a long time to take effect (Stephen Kitt)
• (GH#31) No output written from inside zsh <() construct (Frederik Eaton - Dec 2015)
• (GH#32) Apply rate limits instantaneously, not averaged over the whole transfer (Jered Floyd - Dec 2018)
• (GH#33) Fix compilation problems due to stat64() on Apple Silicon (Filippo Valsorda - Jan 2021)
• (GH#34) Continue timer even if input or output is blocking (Martin Probst - Jun 2017)

Feature requests

• (GH#3) Option ("-x"?) to use xterm title line for status (Joachim Haga)
• (GH#4) Option for process title (Martin Sarsale) as "pv - name:FooProcess -xyz - transferred: 1.3GB - 500KB/s - running: 10:15:30s"
• (GH#6) Look at effect of O_SYNC or fsync on performance; update counters during buffer flush
• (GH#9) Option to switch rate to per minute if really slow
• (GH#10) Add watchfd tests
• (GH#11) Option "--progress-from FILE", read last number and use it as bytes read (Jacek Wielemborek)
• (GH#12) Allow multiple "-d" options (Linus Heckemann for multiple PID:FD; Jacek Wielemborek)
• (GH#14) Momentary ETA option (Luc Gommans)
• (GH#15) Use Unicode for more granular progress bar (Alexander Petrossian)
• (GH#17) Allow "-r" with "-l" and "-n" to output lines/sec (Roland Kletzing)
• (GH#21) Options to change the units in the rate display (Jeffrey Paul, John W. O'Brien, David Henderson)
• (GH#22) Options to skip input and seek on output (Jason A. Pfeil, Feb 2022)
• (GH#25) Normalise progress to 100% on overrun (Andrej Gantvorg)
• (GH#28) Calculate ETA based on current average rate instead of global average (Matt, Christoph Biedl)
• (GH#29) Option to enable O_DIRECT (Romain Kang, Jacek Wielemborek)
• (GH#30) Option for dynamic interval to improve ETA predictions for long-running transfers (Christoph Biedl)
• (GH#35) Allow decimal values for "-s", "-L", "-B" (Thomas Watson - Aug 2020)
• (GH#36) Ignore SIGWINCH (window size change) if "-w" / "-H" provided
• (GH#37) Allow "-E" to take a block size argument so errors cause a skip to the next block (Anthony DeRobertis - Oct 2016)
• (GH#38) Reset ETA on SIGUSR1 (Jacek Wielemborek - Jan 2019)
• (GH#39) Use posix_fadvise() like cat(1) does (Jacek Wielemborek - Oct 2015)
• (GH#40) Permit "-c" with "-d PID:FD", reject "-N" with "-d PID" (Norman Rasmussen - Nov 2020)
• (GH#41) Improve how backwards-moving reads are shown in "--watchfd" (Ryan Cooley - Dec 2017)
• (GH#42) Option to discard stdin so nothing is written to stdout (André Stapf - Apr 2017)
• (GH#43) Differentiate between "--eta" and "--fineta" in display (André Stapf - Apr 2017)
• (GH#44) Specify size for "-s" by pointing to a filename to use the size of
• (GH#45) Option "--sparse" (with block size option) to write sparse output (Andriy Galetski - Apr 2019)
• (GH#46) Option to show speed gauge (% max speed) if progress not known (Ryan Cooley - Jun 2019)
• (GH#47) Analyse splice and buffer usage to improve performance
• (GH#48) Option to show multiple files with individual sizes and a cumulative total (Zach Riggle - Jul 2021)
• (GH#49) Option to provide stats for avg/min/max/stddev throughput (Venky.N.Iyer)
• (GH#50) Allow pv to report on a whole pipeline at once (Will Entriken - Feb 2011)

Any assistance would be appreciated.