281129 - slow cvs update on tinderbox3 client

Status: RESOLVED WONTFIX

(Webtools Graveyard :: Tinderbox3, defect)

Description

[knut st. osmundsen]

User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.3) Gecko/20040920
Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.3) Gecko/20040920

The tinderclient takes ages checking out or updating a tree which is to be
built. The reason seems to be that cvs (1.11.18) is blocking (flush?) every one
or two lines waiting for tinderclient.pl to read it's output. tinderclient.pl
does sleep(3) everytime the pipe buffer is emptied, and cvs was only allowed one
or two lines per 3 seconds.

While this happens with cvs version 1.11.18, but not with 1.11.17, it is still a
generic problem.

Solution:
Changing the sleep(3) to a IO::Select can_read(3) call, fixes the problem. The
checkout went down from 11 minuttes to ~50 seconds.


Reproducible: Always




Software:
Linux 2.6.10-gentoo-r6
CVS version 1.11.18
Perl v5.8.5 

Hardware:
Hyperthreaded Xeon

Comment 1

[knut st. osmundsen]

Attachment: use IO::Select instead of sleep

Comment 2

[Sylvestre Ledru [:Sylvestre]]

tinderbox isn't maintained anymore. Closing!