diff options
Diffstat (limited to 'results/classifier/no-thinking-deepseek-r1:32b/reasoning/syscall/1756807')
| -rw-r--r-- | results/classifier/no-thinking-deepseek-r1:32b/reasoning/syscall/1756807 | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/results/classifier/no-thinking-deepseek-r1:32b/reasoning/syscall/1756807 b/results/classifier/no-thinking-deepseek-r1:32b/reasoning/syscall/1756807 new file mode 100644 index 00000000..017b158d --- /dev/null +++ b/results/classifier/no-thinking-deepseek-r1:32b/reasoning/syscall/1756807 @@ -0,0 +1,17 @@ +The issue reported involves performance regression when using `qemu-user` and `proot` on Ubuntu 18.04 compared to Ubuntu 16.04. The user is encountering significant slowdowns when executing commands within an ARM chroot environment, specifically noting that a simple `grep` command takes over 24 seconds on the newer system versus less than 0.1 seconds on the older setup. + +From the details provided: + +- **System Differences**: The systems differ in hardware specs (higher-end CPU and more RAM on System 1 vs. lower specs on System 2), but the performance discrepancy is far beyond what would be expected from hardware differences alone. +- **Software Versions**: On Ubuntu 16.04, `qemu-arm` version 2.10.1 (from a cloud repo) is used, while on Ubuntu 18.04, it's `qemu-arm` version 2.11.1 from the standard repository. +- **Proot Version**: Both systems use proot 5.1.0, so it's unlikely to be the cause of the issue. + +The problem is likely related to changes in the QEMU implementation between versions 2.10 and 2.11 that affect performance when running user-mode emulation with `proot`. Possible areas of concern could include: + +- **Emulation Overheads**: Changes in how QEMU handles system calls or emulates the ARM architecture might introduce overheads not present in earlier versions. +- **syscall Handling**: Issues in handling syscalls efficiently, leading to increased CPU usage (as seen in the user and sys times). +- **Runtime Performance Bottlenecks**: Other runtime optimizations or regressions that impact the overall execution speed. + +Given these observations, the issue seems to stem from how QEMU is processing system calls or emulating the ARM environment in version 2.11.1 compared to 2.10.1. This suggests a potential problem with how syscalls are being handled in the newer version of QEMU. + +**Classification**: syscall \ No newline at end of file |