Change Details

# lockstat -C netperf -H lip3 -t TCP_MAERTS -D 1 -l 30 Before: ``` Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec 65536 32768 32768 30.01 3026.90 Adaptive mutex spin: 7742136 events in 30.074 seconds (257438 events/sec) Count indv cuml rcnt nsec Lock Caller ------------------------------------------------------------------------------- 2758882 36% 36% 0.00 829 dmarhw iommu_domain_unload+0x1a8 2578220 33% 69% 0.00 2908 dmarhw dmar_qi_task+0x148 899545 12% 81% 0.00 4580 iodom dmar_domain_free_entry+0x52 844244 11% 91% 0.00 1543 iodom iommu_gas_map+0x370 653724 8% 100% 0.00 916 dmarhw dmar_qi_task+0x193 7498 0% 100% 0.00 494 so_rcv _sleep+0x231 8 0% 100% 0.00 660 buffer arena vmem_xfree+0x302 5 0% 100% 0.00 486 Giant usbd_do_request_flags+0x6d4 4 0% 100% 0.00 4620 Giant usbd_enum_lock+0x5e 3 0% 100% 0.00 75 IOMMU_MAP_ENTRY zone_put_bucket+0x28c 2 0% 100% 0.00 2235 ttymtx ttydev_write+0x192 1 0% 100% 0.00 3872 ttymtx ptsdev_poll+0x113 ------------------------------------------------------------------------------- Adaptive mutex block: 1 events in 30.074 seconds (0 events/sec) Count indv cuml rcnt nsec Lock Caller ------------------------------------------------------------------------------- 1 100% 100% 0.00 4622 Giant usbd_enum_lock+0x5e ------------------------------------------------------------------------------- ... ``` After: ``` Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec 65536 32768 32768 30.00 3711.07 Adaptive mutex spin: 1154114 events in 30.113 seconds (38326 events/sec) Count indv cuml rcnt nsec Lock Caller ------------------------------------------------------------------------------- 609410 53% 53% 0.00 749 iodom iommu_gas_map+0x384 538057 47% 99% 0.00 1175 iodom dmar_qi_task+0xf3 6593 1% 100% 0.00 864 so_rcv _sleep+0x231 19 0% 100% 0.00 841 Giant usbd_do_request_flags+0x6d4 15 0% 100% 0.00 1910 Giant usbd_enum_lock+0x5e 10 0% 100% 0.00 1457 dmarhw iommu_domain_unload+0x175 3 0% 100% 0.00 126 global softdep check_clear_deps+0x3d5 2 0% 100% 0.00 284 ix0:TX(1):callout _task_fn_admin+0x17e 1 0% 100% 0.00 3809 ttymtx ptsdev_poll+0x113 1 0% 100% 0.00 820 ttymtx ptsdev_read+0x1a7 1 0% 100% 0.00 3819 ttymtx ttydev_write+0x192 1 0% 100% 0.00 851 ehci0 usb_process+0xc1 1 0% 100% 0.00 65 IOMMU_MAP_ENTRY zone_put_bucket+0x28c ------------------------------------------------------------------------------- Adaptive mutex block: 4 events in 30.113 seconds (0 events/sec) Count indv cuml rcnt nsec Lock Caller ------------------------------------------------------------------------------- 3 75% 75% 0.00 12516 Giant usbd_enum_lock+0x5e 1 25% 100% 0.00 7322 ehci0 usb_process+0xc1 ------------------------------------------------------------------------------- ... ```

``` # lockstat -C netperf -H lip3 -t TCP_MAERTS -D 1 -l 30 ``` Before: ``` Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec 65536 32768 32768 30.01 3026.90 Adaptive mutex spin: 7742136 events in 30.074 seconds (257438 events/sec) Count indv cuml rcnt nsec Lock Caller ------------------------------------------------------------------------------- 2758882 36% 36% 0.00 829 dmarhw iommu_domain_unload+0x1a8 2578220 33% 69% 0.00 2908 dmarhw dmar_qi_task+0x148 899545 12% 81% 0.00 4580 iodom dmar_domain_free_entry+0x52 844244 11% 91% 0.00 1543 iodom iommu_gas_map+0x370 653724 8% 100% 0.00 916 dmarhw dmar_qi_task+0x193 7498 0% 100% 0.00 494 so_rcv _sleep+0x231 8 0% 100% 0.00 660 buffer arena vmem_xfree+0x302 5 0% 100% 0.00 486 Giant usbd_do_request_flags+0x6d4 4 0% 100% 0.00 4620 Giant usbd_enum_lock+0x5e 3 0% 100% 0.00 75 IOMMU_MAP_ENTRY zone_put_bucket+0x28c 2 0% 100% 0.00 2235 ttymtx ttydev_write+0x192 1 0% 100% 0.00 3872 ttymtx ptsdev_poll+0x113 ------------------------------------------------------------------------------- Adaptive mutex block: 1 events in 30.074 seconds (0 events/sec) Count indv cuml rcnt nsec Lock Caller ------------------------------------------------------------------------------- 1 100% 100% 0.00 4622 Giant usbd_enum_lock+0x5e ------------------------------------------------------------------------------- ... ``` After: ``` Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec 65536 32768 32768 30.00 3711.07 Adaptive mutex spin: 1154114 events in 30.113 seconds (38326 events/sec) Count indv cuml rcnt nsec Lock Caller ------------------------------------------------------------------------------- 609410 53% 53% 0.00 749 iodom iommu_gas_map+0x384 538057 47% 99% 0.00 1175 iodom dmar_qi_task+0xf3 6593 1% 100% 0.00 864 so_rcv _sleep+0x231 19 0% 100% 0.00 841 Giant usbd_do_request_flags+0x6d4 15 0% 100% 0.00 1910 Giant usbd_enum_lock+0x5e 10 0% 100% 0.00 1457 dmarhw iommu_domain_unload+0x175 3 0% 100% 0.00 126 global softdep check_clear_deps+0x3d5 2 0% 100% 0.00 284 ix0:TX(1):callout _task_fn_admin+0x17e 1 0% 100% 0.00 3809 ttymtx ptsdev_poll+0x113 1 0% 100% 0.00 820 ttymtx ptsdev_read+0x1a7 1 0% 100% 0.00 3819 ttymtx ttydev_write+0x192 1 0% 100% 0.00 851 ehci0 usb_process+0xc1 1 0% 100% 0.00 65 IOMMU_MAP_ENTRY zone_put_bucket+0x28c ------------------------------------------------------------------------------- Adaptive mutex block: 4 events in 30.113 seconds (0 events/sec) Count indv cuml rcnt nsec Lock Caller ------------------------------------------------------------------------------- 3 75% 75% 0.00 12516 Giant usbd_enum_lock+0x5e 1 25% 100% 0.00 7322 ehci0 usb_process+0xc1 ------------------------------------------------------------------------------- ... ```

``` # lockstat -C netperf -H lip3 -t TCP_MAERTS -D 1 -l 30 ``` Before: ``` Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec 65536 32768 32768 30.01 3026.90 Adaptive mutex spin: 7742136 events in 30.074 seconds (257438 events/sec) Count indv cuml rcnt nsec Lock Caller ------------------------------------------------------------------------------- 2758882 36% 36% 0.00 829 dmarhw iommu_domain_unload+0x1a8 2578220 33% 69% 0.00 2908 dmarhw dmar_qi_task+0x148 899545 12% 81% 0.00 4580 iodom dmar_domain_free_entry+0x52 844244 11% 91% 0.00 1543 iodom iommu_gas_map+0x370 653724 8% 100% 0.00 916 dmarhw dmar_qi_task+0x193 7498 0% 100% 0.00 494 so_rcv _sleep+0x231 8 0% 100% 0.00 660 buffer arena vmem_xfree+0x302 5 0% 100% 0.00 486 Giant usbd_do_request_flags+0x6d4 4 0% 100% 0.00 4620 Giant usbd_enum_lock+0x5e 3 0% 100% 0.00 75 IOMMU_MAP_ENTRY zone_put_bucket+0x28c 2 0% 100% 0.00 2235 ttymtx ttydev_write+0x192 1 0% 100% 0.00 3872 ttymtx ptsdev_poll+0x113 ------------------------------------------------------------------------------- Adaptive mutex block: 1 events in 30.074 seconds (0 events/sec) Count indv cuml rcnt nsec Lock Caller ------------------------------------------------------------------------------- 1 100% 100% 0.00 4622 Giant usbd_enum_lock+0x5e ------------------------------------------------------------------------------- ... ``` After: ``` Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec 65536 32768 32768 30.00 3711.07 Adaptive mutex spin: 1154114 events in 30.113 seconds (38326 events/sec) Count indv cuml rcnt nsec Lock Caller ------------------------------------------------------------------------------- 609410 53% 53% 0.00 749 iodom iommu_gas_map+0x384 538057 47% 99% 0.00 1175 iodom dmar_qi_task+0xf3 6593 1% 100% 0.00 864 so_rcv _sleep+0x231 19 0% 100% 0.00 841 Giant usbd_do_request_flags+0x6d4 15 0% 100% 0.00 1910 Giant usbd_enum_lock+0x5e 10 0% 100% 0.00 1457 dmarhw iommu_domain_unload+0x175 3 0% 100% 0.00 126 global softdep check_clear_deps+0x3d5 2 0% 100% 0.00 284 ix0:TX(1):callout _task_fn_admin+0x17e 1 0% 100% 0.00 3809 ttymtx ptsdev_poll+0x113 1 0% 100% 0.00 820 ttymtx ptsdev_read+0x1a7 1 0% 100% 0.00 3819 ttymtx ttydev_write+0x192 1 0% 100% 0.00 851 ehci0 usb_process+0xc1 1 0% 100% 0.00 65 IOMMU_MAP_ENTRY zone_put_bucket+0x28c ------------------------------------------------------------------------------- Adaptive mutex block: 4 events in 30.113 seconds (0 events/sec) Count indv cuml rcnt nsec Lock Caller ------------------------------------------------------------------------------- 3 75% 75% 0.00 12516 Giant usbd_enum_lock+0x5e 1 25% 100% 0.00 7322 ehci0 usb_process+0xc1 ------------------------------------------------------------------------------- ... ```