On 2008.04.30 09:37:22 -0700, Simon Marlow <[EMAIL PROTECTED]> scribbled 1.2K characters: > I've switched to using darcs2 locally (no repo changes yet, just to see > how well it works as a drop-in replacement). It seems to be noticeably > slower for many of the operations I do day to day. > > Here's an example, doing 'darcs whatsnew' on the GHC testsuite > repository (http://darcs.haskell.org/testsuite): > > $ time /usr/bin/darcs w -s > M ./tests/ghc-regress/ghc-e/should_run/Makefile +3 > M ./tests/ghc-regress/ghc-e/should_run/all.T -1 +1 > A ./tests/ghc-regress/ghc-e/should_run/ghc-e006.hs > A ./tests/ghc-regress/ghc-e/should_run/ghc-e006.stdout > 0.97s real 0.24s user 0.09s system 34% /usr/bin/darcs w -s > $ time darcs2 w -s > M ./tests/ghc-regress/ghc-e/should_run/Makefile +3 > M ./tests/ghc-regress/ghc-e/should_run/all.T -1 +1 > A ./tests/ghc-regress/ghc-e/should_run/ghc-e006.hs > A ./tests/ghc-regress/ghc-e/should_run/ghc-e006.stdout > 8.03s real 6.98s user 0.46s system 92% darcs w -s > > 8x slower! (and no progress messages) > > yesterday I noticed that an amend-record in the GHC repo was quite slow, > and the progress message reported that it was reading the inventory. > > I hope this is of use to someone... > > Cheers, > Simon
That's interesting to know. Could you perhaps paste the output of whatsnew (or even better, attach a patch)? I want to test the whatsnew against a local version I have of darcs (one which has the 4096 patch lispy mentioned and also uses mmap in one place, which could help a lot), but when I guess at those changes, I have a very quick whatsnew: [EMAIL PROTECTED]:2962~/testsuite>time whatsnew [ 6:24PM] hunk ./tests/ghc-regress/ghc-e/should_run/Makefile 22 + + + hunk ./tests/ghc-regress/ghc-e/should_run/all.T 9 + addfile ./tests/ghc-regress/ghc-e/should_run/ghc-e006.hs hunk ./tests/ghc-regress/ghc-e/should_run/ghc-e006.hs 1 +foo bar addfile ./tests/ghc-regress/ghc-e/should_run/ghc-e006.stdout hunk ./tests/ghc-regress/ghc-e/should_run/ghc-e006.stdout 1 +foo bar darcs whatsnew 0.07s user 0.07s system 85% cpu 0.163 total [EMAIL PROTECTED]:2963~/testsuite>time whatsnew -s [ 6:24PM] M ./tests/ghc-regress/ghc-e/should_run/Makefile +3 M ./tests/ghc-regress/ghc-e/should_run/all.T +1 A ./tests/ghc-regress/ghc-e/should_run/ghc-e006.hs A ./tests/ghc-regress/ghc-e/should_run/ghc-e006.stdout darcs whatsnew -s 0.08s user 0.05s system 93% cpu 0.138 total [EMAIL PROTECTED]:2966~/testsuite>time whatsnew -s [ 6:26PM] M ./tests/ghc-regress/ghc-e/should_run/Makefile +3 M ./tests/ghc-regress/ghc-e/should_run/all.T +1 A ./tests/ghc-regress/ghc-e/should_run/ghc-e006.hs A ./tests/ghc-regress/ghc-e/should_run/ghc-e006.stdout darcs whatsnew -s 0.10s user 0.03s system 81% cpu 0.159 total [EMAIL PROTECTED]:2966~/testsuite>time whatsnew -s [ 6:29PM] M ./tests/ghc-regress/ghc-e/should_run/Makefile +3 M ./tests/ghc-regress/ghc-e/should_run/all.T +1 A ./tests/ghc-regress/ghc-e/should_run/ghc-e006.hs A ./tests/ghc-regress/ghc-e/should_run/ghc-e006.stdout darcs whatsnew -s 0.06s user 0.07s system 62% cpu 0.207 total [EMAIL PROTECTED]:2966~/testsuite>time whatsnew -s [ 6:29PM] M ./tests/ghc-regress/ghc-e/should_run/Makefile +3 M ./tests/ghc-regress/ghc-e/should_run/all.T +1 A ./tests/ghc-regress/ghc-e/should_run/ghc-e006.hs A ./tests/ghc-regress/ghc-e/should_run/ghc-e006.stdout darcs whatsnew -s 0.08s user 0.05s system 94% cpu 0.137 total [EMAIL PROTECTED]:2966~/testsuite>time whatsnew -s [ 6:29PM] M ./tests/ghc-regress/ghc-e/should_run/Makefile +3 M ./tests/ghc-regress/ghc-e/should_run/all.T +1 A ./tests/ghc-regress/ghc-e/should_run/ghc-e006.hs A ./tests/ghc-regress/ghc-e/should_run/ghc-e006.stdout darcs whatsnew -s 0.09s user 0.05s system 63% cpu 0.221 total ----- I'm not going to claim the whatsnew -s issue is solved by 4096+mmap, since perhaps my computer is just different or something, but I went and downloaded Kowey's static i386 darcs binary to provide a comparison: [EMAIL PROTECTED]:2977~/testsuite>time ~/darcs-1.0.9-i386-linux whatsnew -s [ 6:33PM] M ./tests/ghc-regress/ghc-e/should_run/Makefile +3 M ./tests/ghc-regress/ghc-e/should_run/all.T +1 A ./tests/ghc-regress/ghc-e/should_run/ghc-e006.hs A ./tests/ghc-regress/ghc-e/should_run/ghc-e006.stdout ~/darcs-1.0.9-i386-linux whatsnew -s 0.08s user 0.03s system 95% cpu 0.115 total [EMAIL PROTECTED]:2978~/testsuite>time ~/darcs-1.0.9-i386-linux whatsnew -s [ 6:33PM] M ./tests/ghc-regress/ghc-e/should_run/Makefile +3 M ./tests/ghc-regress/ghc-e/should_run/all.T +1 A ./tests/ghc-regress/ghc-e/should_run/ghc-e006.hs A ./tests/ghc-regress/ghc-e/should_run/ghc-e006.stdout ~/darcs-1.0.9-i386-linux whatsnew -s 0.07s user 0.04s system 95% cpu 0.115 total -- gwern 355 1071 Audiotel Tzanhanim of WA2000 top security mixm enigma
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