Ubuntu
linux package

  1. Bug #2012335
  2. Comment #0

Comment 0 for bug 2012335

Revision history for this message
xijunli (xijunli) wrote :

System Configuration
    OS: Ubuntu 22.04 LTS
    Kernel: 5.15.0-25-generic
    CPUs: 256
    NIC: Intel E810 NIC with 512 MSIx vectors each function

Errors
    Not enough device MSI-X vectors, requested = 260, available = 253

Findings
    (1) the current ice kernel driver (ice_main.c) will pre-allocate all required number of msix (even it's not enough for big core CPUs)
    (2) the commit https://github.com/torvalds/linux/commit/ce4626131112e1d0066a890371e14d8091323f99 has improved this logic, and it seems merged into kernel version from v6.1

So for supporting the new CPUs with more than 252 vCPUs, will Ubuntu kernel backport above patch to the current kernel (v5.15) ?