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| author | Christian Krinitsin <mail@krinitsin.com> | 2025-07-03 07:27:52 +0000 |
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| committer | Christian Krinitsin <mail@krinitsin.com> | 2025-07-03 07:27:52 +0000 |
| commit | d0c85e36e4de67af628d54e9ab577cc3fad7796a (patch) | |
| tree | f8f784b0f04343b90516a338d6df81df3a85dfa2 /results/classifier/gemma3:12b/performance/1672383 | |
| parent | 7f4364274750eb8cb39a3e7493132fca1c01232e (diff) | |
| download | qemu-analysis-d0c85e36e4de67af628d54e9ab577cc3fad7796a.tar.gz qemu-analysis-d0c85e36e4de67af628d54e9ab577cc3fad7796a.zip | |
add deepseek and gemma results
Diffstat (limited to 'results/classifier/gemma3:12b/performance/1672383')
| -rw-r--r-- | results/classifier/gemma3:12b/performance/1672383 | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/results/classifier/gemma3:12b/performance/1672383 b/results/classifier/gemma3:12b/performance/1672383 new file mode 100644 index 000000000..0a281d808 --- /dev/null +++ b/results/classifier/gemma3:12b/performance/1672383 @@ -0,0 +1,21 @@ + +Slow Windows XP load after commit a9353fe897ca2687e5b3385ed39e3db3927a90e0 + +I've recently discovered, that in QEMU 2.8+ my Windows XP loading time has significantly worsened. In 2.7 it took 30-40 second to boot, but in 2.8 it became 2-2,5 minutes. + +I've used Git bisect, and found out that the change happened after commit a9353fe897ca2687e5b3385ed39e3db3927a90e0, which, as far as I can tell from the commit message, handled race condition when invalidating breakpoint. + +I've set a breakpoint in static void breakpoint_invalidate(CPUState *cpu, target_ulong pc), and here's a backtrace: +#0 cpu_breakpoint_insert (cpu=cpu@entry=0x555556a73be0, pc=144, + flags=flags@entry=32, breakpoint=breakpoint@entry=0x555556a7c670) + at /media/sdd2/qemu-work/exec.c:830 +#1 0x00005555558746ac in hw_breakpoint_insert (env=env@entry=0x555556a7be60, + index=index@entry=0) at /media/sdd2/qemu-work/target-i386/bpt_helper.c:64 +#2 0x00005555558748ed in cpu_x86_update_dr7 (env=0x555556a7be60, + new_dr7=<optimised out>) + at /media/sdd2/qemu-work/target-i386/bpt_helper.c:160 +#3 0x00007fffa17421f6 in code_gen_buffer () +#4 0x000055555577fcb4 in cpu_tb_exec (itb=<optimised out>, + itb=<optimised out>, cpu=0x7fff8b7763b0) + at /media/sdd2/qemu-work/cpu-exec.c:164 +It seems that XP sets some breakpoints during it's load, and it leads to frequent TB flushes and slow execution. \ No newline at end of file |