Changes between Initial Version and Version 2 of Ticket #14863


Ignore:
Timestamp:
04/05/2021 07:39:38 PM (3 years ago)
Author:
ken@…
Comment:

[ken] Removed comments about the build being a lot slower - I think that at some point I installed a debug build of Qt in my "by the book" (i.e. without my CFLAGS) /opt/qt5book.

Have just started a complete by-the-book system build to review this.

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  • Ticket #14863

    • Property Owner changed from blfs-book to ken@…
    • Property Status new → assigned

  • Ticket #14863 – Description

    initial v2  
    77It is not clear if they have finished with this latest batch, but the items changed suggest that they maybe have (the latest batch is CVE-2021-21194-21199, see e.g. [ https://www.cisecurity.org/advisory/multiple-vulnerabilities-in-google-chrome-could-allow-for-arbitrary-code-execution_2021-042/]
    88
    9 Unfortunately, for some reason the build is now '''a lot''' slower - with 4 CPUs online (i.e. ninja schedules 6 jobs at a time) the build on BLFS-10.1 with a default Qt5-5.15.2 (i.e. without forcing my own CFLAGS) is now up to 123 SBU. At first I thought this was because the box was slightly (0.5GB) into swap at the end, and then perhaps that writing stdout to a urxvt term might be slow (DRM terms have been slow in the past). But all my attempts come out at 123 SBU.
    10 
    11 Strangely, on this machine my '''optimized and hardened''' builds with 8 cores online were 88 SBU with what I called 5.15.3, and 60 SBU with recent versions.
    12 Looks as if I screwed up somewhere in measuring 5.15.3.
    13 
    149Keeping this open for a couple of days to see if more updates appear.