upstream/mercurial-mirror Files · mercurial/templates/gitweb/bookmarks.tmpl

discovery: slowly increase sampling size...

discovery: slowly increase sampling size Some pathological discovery runs can requires many roundtrip. When this happens things can get very slow. To make the algorithm more resilience again such pathological case. We slowly increase the sample size with each roundtrip (+5%). This will have a negligible impact on "normal" discovery with few roundtrips, but a large positive impact of case with many roundtrips. Asking more question per roundtrip helps to reduce the undecided set faster. Instead of reducing the undecided set a linear speed (in the worst case), we reduce it as a guaranteed (small) exponential rate. The data below show this slow ramp up in sample size: round trip | 1 | 5 | 10 | 20 | 50 | 100 | 130 | sample size | 200 | 254 | 321 | 517 | 2 199 | 25 123 | 108 549 | covered nodes | 200 | 1 357 | 2 821 | 7 031 | 42 658 | 524 530 | 2 276 755 | To be a bit more concrete, lets take a very pathological case as an example. We are doing discovery from a copy of Mozilla-try to a more recent version of mozilla-unified. Mozilla-unified heads are unknown to the mozilla-try repo and there are over 1 million "missing" changesets. (the discovery is "local" to avoid network interference) Without this change, the discovery: - last 1858 seconds (31 minutes), - does 1700 round trip, - asking about 340 000 nodes. With this change, the discovery: - last 218 seconds (3 minutes, 38 seconds a -88% improvement), - does 94 round trip (-94%), - asking about 344 211 nodes (+1%). Of course, this is an extreme case (and 3 minutes is still slow). However this give a good example of how this sample size increase act as a safety net catching any bad situations. We could image a steeper increase than 5%. For example 10% would give the following number: round trip | 1 | 5 | 10 | 20 | 50 | 75 | 100 | sample size | 200 | 321 | 514 | 1 326 | 23 060 | 249 812 | 2 706 594 | covered nodes | 200 | 1 541 | 3 690 | 12 671 | 251 871 | 2 746 254 | 29 770 966 | In parallel, it is useful to understand these pathological cases and improve them. However the current change provides a general purpose safety net to smooth the impact of pathological cases. To avoid issue with older http server, the increase in sample size only occurs if the protocol has not limit on command argument size.

Gregory Szorc - - Load All Authors

File last commit:

r32762:2d93d215 default


                r42546:dbd0fcca

default

Download file

             bookmarks.tmpl
        
                    35 lines
            
             | 1.2 KiB
            
                | application/x-cheetah
            
             |
                CheetahLexer
            
             / mercurial / templates / gitweb / bookmarks.tmpl
          
                    History
                
                 |
                  Source
                 | Raw
                 |Copy content
                 |Copy permalink

        Yuya Nishihara
    
hgweb: add separate bookmarks listing to gitweb theme (based on 38c9837b1f75)

              r13864
            
      {header}

      <title>{repo|escape}: Bookmarks</title>

      <link rel="alternate" type="application/atom+xml"

        av6
    
gitweb: describe feed type in links on /branches, /tags and /bookmarks

              r27549
            
         href="{url|urlescape}atom-bookmarks" title="Atom feed for {repo|escape}: bookmarks"/>

        Yuya Nishihara
    
hgweb: add separate bookmarks listing to gitweb theme (based on 38c9837b1f75)

              r13864
            
      <link rel="alternate" type="application/rss+xml"

        av6
    
gitweb: describe feed type in links on /branches, /tags and /bookmarks

              r27549
            
         href="{url|urlescape}rss-bookmarks" title="RSS feed for {repo|escape}: bookmarks"/>

        Yuya Nishihara
    
hgweb: add separate bookmarks listing to gitweb theme (based on 38c9837b1f75)

              r13864
            
      </head>

      <body>

      <div class="page_header">

        Angel Ezquerra <angel.ezquerra at gmail.com>
    
hgweb: add a "URL breadcrumb" to the index and repository pages...

              r18258
            
      <a href="{logourl}" title="Mercurial" style="float: right;">Mercurial</a>

      <a href="/">Mercurial</a> {pathdef%breadcrumb} / bookmarks

        Yuya Nishihara
    
hgweb: add separate bookmarks listing to gitweb theme (based on 38c9837b1f75)

              r13864
            
      </div>

      <div class="page_nav">

        Gregory Szorc
    
hgweb: refresh styling of gitweb's search form...

              r32762
            
      <div>

        Thomas Arendsen Hein
    
hgweb: urlescape all urls, HTML escape repo/tag/branch/... names...

              r18526
            
      <a href="{url|urlescape}summary{sessionvars%urlparameter}">summary</a> |

      <a href="{url|urlescape}shortlog{sessionvars%urlparameter}">shortlog</a> |

      <a href="{url|urlescape}log{sessionvars%urlparameter}">changelog</a> |

      <a href="{url|urlescape}graph{sessionvars%urlparameter}">graph</a> |

      <a href="{url|urlescape}tags{sessionvars%urlparameter}">tags</a> |

        Yuya Nishihara
    
hgweb: add separate bookmarks listing to gitweb theme (based on 38c9837b1f75)

              r13864
            
      bookmarks |

        Thomas Arendsen Hein
    
hgweb: urlescape all urls, HTML escape repo/tag/branch/... names...

              r18526
            
      <a href="{url|urlescape}branches{sessionvars%urlparameter}">branches</a> |

        av6
    
hgweb: don't point file links at tip hash where it doesn't make sense...

              r25526
            
      <a href="{url|urlescape}file{sessionvars%urlparameter}">files</a> |

        Thomas Arendsen Hein
    
hgweb: urlescape all urls, HTML escape repo/tag/branch/... names...

              r18526
            
      <a href="{url|urlescape}help{sessionvars%urlparameter}">help</a>

        Gregory Szorc
    
hgweb: refresh styling of gitweb's search form...

              r32762
            
      </div>

      {searchform}

        Yuya Nishihara
    
hgweb: add separate bookmarks listing to gitweb theme (based on 38c9837b1f75)

              r13864
            
      </div>

      <div class="title">&nbsp;</div>

      <table cellspacing="0">

      {entries%bookmarkentry}

      </table>

      {footer}

	Site-wide shortcuts
/	Use quick search box
g h	Goto home page
g g	Goto my private gists page
g G	Goto my public gists page
g 0-9	Goto bookmarked items from 0-9
n r	New repository page
n g	New gist page

	Repositories
g s	Goto summary page
g c	Goto changelog page
g f	Goto files page
g F	Goto files page with file search activated
g p	Goto pull requests page
g o	Goto repository settings
g O	Goto repository access permissions settings
t s	Toggle sidebar on some pages

Yuya Nishihara hgweb: add separate bookmarks listing to gitweb theme (based on 38c9837b1f75)	r13864	{header}
		<title>{repo\|escape}: Bookmarks</title>
		<link rel="alternate" type="application/atom+xml"
av6 gitweb: describe feed type in links on /branches, /tags and /bookmarks	r27549	href="{url\|urlescape}atom-bookmarks" title="Atom feed for {repo\|escape}: bookmarks"/>
Yuya Nishihara hgweb: add separate bookmarks listing to gitweb theme (based on 38c9837b1f75)	r13864	<link rel="alternate" type="application/rss+xml"
av6 gitweb: describe feed type in links on /branches, /tags and /bookmarks	r27549	href="{url\|urlescape}rss-bookmarks" title="RSS feed for {repo\|escape}: bookmarks"/>
Yuya Nishihara hgweb: add separate bookmarks listing to gitweb theme (based on 38c9837b1f75)	r13864	</head>
		<body>

		<div class="page_header">
Angel Ezquerra <angel.ezquerra at gmail.com> hgweb: add a "URL breadcrumb" to the index and repository pages...	r18258	<a href="{logourl}" title="Mercurial" style="float: right;">Mercurial</a>
		<a href="/">Mercurial</a> {pathdef%breadcrumb} / bookmarks
Yuya Nishihara hgweb: add separate bookmarks listing to gitweb theme (based on 38c9837b1f75)	r13864	</div>

		<div class="page_nav">
Gregory Szorc hgweb: refresh styling of gitweb's search form...	r32762	<div>
Thomas Arendsen Hein hgweb: urlescape all urls, HTML escape repo/tag/branch/... names...	r18526	<a href="{url\|urlescape}summary{sessionvars%urlparameter}">summary</a> \|
		<a href="{url\|urlescape}shortlog{sessionvars%urlparameter}">shortlog</a> \|
		<a href="{url\|urlescape}log{sessionvars%urlparameter}">changelog</a> \|
		<a href="{url\|urlescape}graph{sessionvars%urlparameter}">graph</a> \|
		<a href="{url\|urlescape}tags{sessionvars%urlparameter}">tags</a> \|
Yuya Nishihara hgweb: add separate bookmarks listing to gitweb theme (based on 38c9837b1f75)	r13864	bookmarks \|
Thomas Arendsen Hein hgweb: urlescape all urls, HTML escape repo/tag/branch/... names...	r18526	<a href="{url\|urlescape}branches{sessionvars%urlparameter}">branches</a> \|
av6 hgweb: don't point file links at tip hash where it doesn't make sense...	r25526	<a href="{url\|urlescape}file{sessionvars%urlparameter}">files</a> \|
Thomas Arendsen Hein hgweb: urlescape all urls, HTML escape repo/tag/branch/... names...	r18526	<a href="{url\|urlescape}help{sessionvars%urlparameter}">help</a>
Gregory Szorc hgweb: refresh styling of gitweb's search form...	r32762	</div>
		{searchform}
Yuya Nishihara hgweb: add separate bookmarks listing to gitweb theme (based on 38c9837b1f75)	r13864	</div>

		<div class="title"> </div>
		<table cellspacing="0">
		{entries%bookmarkentry}
		</table>

		{footer}