On Fri, 21 Mar 2025, Raghavendra K T wrote:
But a longer running/ more memory workload may make more difference. I will comeback with that number.base NUMAB=2 Patched NUMAB=0 time in sec time in sec =================================================== 8G: 134.33 (0.19) 119.88 ( 0.25) 16G: 292.24 (0.60) 325.06 (11.11) 32G: 585.06 (0.24) 546.15 ( 0.50) 64G: 1278.98 (0.27) 1221.41 ( 1.54) We can see that numbers have not changed much between NUMAB=1 NUMAB=0 in patched case.
Thanks. Since this might vary across workloads, another important metric here is numa hit/misses statistics. fyi I have also been trying this series to get some numbers as well, but noticed overnight things went south (so no chance before LSFMM): [ 464.026917] watchdog: BUG: soft lockup - CPU#108 stuck for 52s! [kmmscand:934] [ 464.026924] Modules linked in: ... [ 464.027098] CPU: 108 UID: 0 PID: 934 Comm: kmmscand Tainted: G L 6.14.0-rc6-kmmscand+ #4 [ 464.027105] Tainted: [L]=SOFTLOCKUP [ 464.027107] Hardware name: Supermicro SSG-121E-NE3X12R/X13DSF-A, BIOS 2.1 01/29/2024 [ 464.027109] RIP: 0010:pmd_off+ 0x58/0xd0 [ 464.027124] Code: 83 e9 01 48 21 f1 48 c1 e1 03 48 89 f8 0f 1f 00 48 23 05 fb c7 fd 00 48 03 0d 0c b9 fb 00 48 25 00 f0 ff ff 48 01 c8 48 8b 38 <48> 89 f8 0f 1f 00 48 8b 0d db c7 fd 00 48 21 c1 48 89 d0 48 c1 e8 [ 464.027128] RSP: 0018:ff71a0dc1b05bbc8 EFLAGS: 00000286 [ 464.027133] RAX: ff3b028e421c17f0 RBX: ffc90cb8322e5e00 RCX: ff3b020d400007f0 [ 464.027136] RDX: 00007f1393978000 RSI: 00000000000000fe RDI: 000000b9726b0067 [ 464.027139] RBP: ff3b02f5d05babc0 R08: 00007f9c5653f000 R09: ffc90cb8322e0001 [ 464.027141] R10: 0000000000000000 R11: ff3b028dd339420c R12: 00007f1393978000 [ 464.027144] R13: ff3b028dded9cbb0 R14: ffc90cb8322e0000 R15: ffffffffb9a0a4c0 [ 464.027146] FS: 0000000000000000(0000) GS:ff3b030bbf400000(0000) knlGS:0000000000000000 [ 464.027150] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 464.027153] CR2: 0000564713088f19 CR3: 000000fb40822006 CR4: 0000000000773ef0 [ 464.027157] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 464.027159] DR3: 0000000000000000 DR6: 00000000fffe07f0 DR7: 0000000000000400 [ 464.027162] PKRU: 55555554 [ 464.027163] Call Trace: [ 464.027166] <IRQ> [ 464.027170] ? watchdog_timer_fn+0x21b/0x2a0 [ 464.027180] ? __pfx_watchdog_timer_fn+0x10/0x10 [ 464.027186] ? __hrtimer_run_queues+0x10f/0x2a0 [ 464.027193] ? hrtimer_interrupt+0xfb/0x240 [ 464.027199] ? __sysvec_apic_timer_interrupt+0x4e/0x110 [ 464.027208] ? sysvec_apic_timer_interrupt+0x68/0x90 [ 464.027219] </IRQ> [ 464.027221] <TASK> [ 464.027222] ? asm_sysvec_apic_timer_interrupt+0x16/0x20 [ 464.027236] ? pmd_off+0x58/0xd0 [ 464.027243] hot_vma_idle_pte_entry+0x151/0x500 [ 464.027253] walk_pte_range_inner+0xbe/0x100 [ 464.027260] ? __pte_offset_map_lock+0x9a/0x110 [ 464.027267] walk_pgd_range+0x8f0/0xbb0 [ 464.027271] ? __pfx_hot_vma_idle_pte_entry+0x10/0x10 [ 464.027282] __walk_page_range+0x71/0x1d0 [ 464.027287] ? prepare_to_wait_event+0x53/0x180 [ 464.027294] walk_page_vma+0x98/0xf0 [ 464.027300] kmmscand+0x2aa/0x8d0 [ 464.027310] ? __pfx_kmmscand+0x10/0x10 [ 464.027318] kthread+0xea/0x230 [ 464.027326] ? finish_task_switch.isra.0+0x88/0x2d0 [ 464.027335] ? __pfx_kthread+0x10/0x10 [ 464.027341] ret_from_fork+0x2d/0x50 [ 464.027350] ? __pfx_kthread+0x10/0x10 [ 464.027355] ret_from_fork_asm+0x1a/0x30 [ 464.027365] </TASK>
