Hi Willi, On Sat, Mar 22, 2025 at 07:47:14PM +0100, Willi Mann wrote: > Hi Salvatore, > > sorry, I somehow missed your mail. > > Am 21.03.25 um 21:07 schrieb Salvatore Bonaccorso: > > > > While we had no followup after your last email, I wonder now if you > > > still experience the issues with the most recent 6.1.y kernel > > > available in Debian (6.1.128-1). > > > > > > Can you report back? Can you test on that machine as well newer > > > kernels ideally from unstable (6.12.16-1) or experimental > > > (6.13.4-1~exp1)? > > > > Any news here? > > With 6.1.128-1, there are still backtraces, though I don't experience any > slowness. I could only retrieve them from dmesg output as the kernel > logfiles containing them are already rotated. Also, I removed noise > unrelated to to the crash. See attachment. > > I'll install a newer kernel tomorrow and let you know the outcome.
Ack thanks. Btw, in a earlier log which was more complete from the boot on, I notice [...] [ 2866.062346] sh (1675): drop_caches: 3 [ 6466.150805] sh (2315): drop_caches: 3 [10066.236130] sh (2955): drop_caches: 3 [13666.343713] sh (3732): drop_caches: 3 [17266.432101] sh (4393): drop_caches: 3 [20866.523958] sh (4975): drop_caches: 3 [24466.622511] sh (5717): drop_caches: 3 [26006.697987] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [26016.962347] rcu: 1-...0: (18 ticks this GP) idle=a5ac/1/0x4000000000000000 softirq=94076/94077 fqs=908 [26016.962408] (detected by 0, t=5252 jiffies, g=164937, q=845 ncpus=2) [26016.962414] Sending NMI from CPU 0 to CPUs 1: [26024.942628] NMI backtrace for cpu 1 [26024.942634] CPU: 1 PID: 4882 Comm: kworker/u4:2 Tainted: G E 6.1.0-28-amd64 #1 Debian +6.1.118-1~test1 [...] before the actual stalls begin. what is doing that and droppying caches? thans for your time doing the experiments. Regards, Salvatore
