On 27/11/2025 13:18, Vlastimil Babka wrote:
On 11/27/25 12:38, Jon Hunter wrote:
On 31/10/2025 21:32, Daniel Gomez wrote:
On 10/09/2025 10.01, Vlastimil Babka wrote:
Hi Vlastimil,
This patch increases kmod selftest (stress module loader) runtime by about
~50-60%, from ~200s to ~300s total execution time. My tested kernel has
CONFIG_KVFREE_RCU_BATCHED enabled. Any idea or suggestions on what might be
causing this, or how to address it?
I have been looking into a regression for Linux v6.18-rc where time
taken to run some internal graphics tests on our Tegra234 device has
increased from around 35% causing the tests to timeout. Bisect is
pointing to this commit and I also see we have CONFIG_KVFREE_RCU_BATCHED=y.
Do the tegra tests involve (frequent) module unloads too, then? Or calling
kmem_cache_destroy() somewhere?
In this specific case I am not running the tegra-tests but we have a
internal testsuite of GPU related tests. I don't believe that believe
this is unloading any modules. I can take a look next week to see if
kmem_cache_destroy() is getting called somewhere when these tests run.
Thanks
Jon
--
nvpublic
