Windows 10 1809 Benchmarks. The Spectre patch kills performance.

Everyone run for their AMD machines, this Spectre patch in 1809 is crucifying machine performance.

This is a small portion of benchmarking numbers from our MFC CAD application. It's getting on in years and doesn't use any GPU acceleration. Even an 1809 machine without the Spectre patch performs badly against a 1709 build.

OUTSIDE LIMITS test "adviser\analysis\analyseAllRules"
8 ( 4.55 ) secs in "Win10_1709"
13 ( 7.55 ) secs in "Win10_1809_NoSpectre"
22 ( 11.25 ) secs in "Win10_64_1809_WSpectre.htm"

OUTSIDE LIMITS test "adviser\analysis\analyseOneRule"
8 ( 4.80 ) secs in "Win10_1709"
11 ( 8.02 ) secs in "Win10_1809_NoSpectre"
20 ( 11.98 ) secs in "Win10_64_1809_WSpectre.htm"

OUTSIDE LIMITS test "adviser\analysis\filename_invalidForPred"
8 ( 4.69 ) secs in "Win10_1709"
11 ( 7.80 ) secs in "Win10_1809_NoSpectre"
22 ( 11.86 ) secs in "Win10_64_1809_WSpectre.htm"

OUTSIDE LIMITS test "adviser\analysis\report"
8 ( 4.59 ) secs in "Win10_1709"
11 ( 7.63 ) secs in "Win10_1809_NoSpectre"
20 ( 11.50 ) secs in "Win10_64_1809_WSpectre.htm"

OUTSIDE LIMITS test "adviser\decouplingFiles\AN-Pins_NoPart"
7 ( 4.45 ) secs in "Win10_1709"
11 ( 7.59 ) secs in "Win10_1809_NoSpectre"
20 ( 11.83 ) secs in "Win10_64_1809_WSpectre.htm"

OUTSIDE LIMITS test "adviser\decouplingFiles\analyseBrowse"
8 ( 5.25 ) secs in "Win10_1709"
11 ( 8.06 ) secs in "Win10_1809_NoSpectre"
19 ( 11.66 ) secs in "Win10_64_1809_WSpectre.htm"

Hi folks

I'd call time on this until we get the latest 1809 when it's re-released. Who knows what Ms found that they had to pull the release.

Judging by the experience of posters on TF I don't think many - if any - suffered the "data loss" problem which was bandied about in the media. - There must have been some other quite severe defects which Ms are keeping to themselves so I wouldn't judge any benchmarks with this 1809 release - wait until we get the new one.

The Skip ahead is a good one to test -- you can download via UUPDUMP if you aren't enrolled in the Skip Ahead release program.

Cheers
jimbo

I haven't noticed any drop in performance on my i7 6700K desktop that has all the Spectre patches (and 1809). I use my desktop for my recording studio and that still works as fast as it did before the patches.

I read, on another forum, that one of the problems with 1809 was the Document loss and that problem is suspected to be those that use one drive. I don't use one drive and did not have any Document loss with 1809.

FWIW, Intel CPU systems have better (lower) audio latency than Ryzen systems.