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Diffstat (limited to 'results/classifier/gemma3:12b/performance/1811653')
| -rw-r--r-- | results/classifier/gemma3:12b/performance/1811653 | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/results/classifier/gemma3:12b/performance/1811653 b/results/classifier/gemma3:12b/performance/1811653 new file mode 100644 index 000000000..5f93fbc9d --- /dev/null +++ b/results/classifier/gemma3:12b/performance/1811653 @@ -0,0 +1,42 @@ + +usbredir slow when multi bulk packet per second + +QEMU Ver: all version +Client: virt-viewer by spice +Guest VM: win7 +Bug description: + Use Qemu 2.1 or later with usbredir, When I redirect a bulk usb-device from virt-viewer client, +the bulk-usb-device driver or app in GuestVM will send 50 bulk-urb per times. + In VM, using the usblyzer to monitor the usb packet, it show these 50 bulk-urb packet send in 1ms, +But in the QEMU VM log, It shows as below +========================= +2019-01-14T08:27:26.096809Z qemu-kvm: usb-redir: bulk-out ep 86 stream 0 len 49152 id 2114122112 0x7f0ffa300b40 +2019-01-14T08:27:26.105680Z qemu-kvm: usb-redir: bulk-in status 0 ep 86 stream 0 len 49152 id 2114122112 0x7f0ffa300b40 +2019-01-14T08:27:26.108219Z qemu-kvm: usb-redir: bulk-out ep 86 stream 0 len 49152 id 2114122112 0x7f0ffa300b40 +2019-01-14T08:27:26.116742Z qemu-kvm: usb-redir: bulk-in status 0 ep 86 stream 0 len 49152 id 2114122112 0x7f0ffa300b40 +2019-01-14T08:27:26.119242Z qemu-kvm: usb-redir: bulk-out ep 86 stream 0 len 49152 id 2114122112 0x7f0ffa300b40 +2019-01-14T08:27:26.129851Z qemu-kvm: usb-redir: bulk-in status 0 ep 86 stream 0 len 49152 id 2114122112 0x7f0ffa300b40 +2019-01-14T08:27:26.132349Z qemu-kvm: usb-redir: bulk-out ep 86 stream 0 len 49152 id 2114122112 0x7f0ffa300b40 +2019-01-14T08:27:26.141248Z qemu-kvm: usb-redir: bulk-in status 0 ep 86 stream 0 len 49152 id 2114122112 0x7f0ffa300b40 +2019-01-14T08:27:26.144932Z qemu-kvm: usb-redir: bulk-out ep 86 stream 0 len 49152 id 2114122112 0x7f0ffa300b40 +2019-01-14T08:27:26.154035Z qemu-kvm: usb-redir: bulk-in status 0 ep 86 stream 0 len 49152 id 2114122112 0x7f0ffa300b40 +========================= + + It shows that the bulk packet is single thread send and recv, per bulk packet will use 10-20ms, all 50 bulk-packets will use 500~1000ms, so the in the VM, bulk-urb will timeout always! + + How to send the bulk packet by multithread to speedup the bulk-urb send and recv, for example: +------------ + bulk-out ep 86 stream 0 len 49152 id xxxx1 + bulk-out ep 86 stream 0 len 49152 id xxxx2 + bulk-out ep 86 stream 0 len 49152 id xxxx3 + bulk-out ep 86 stream 0 len 49152 id xxxx4 + bulk-out ... + bulk-out ep 86 stream 0 len 49152 id xxxx50 +... + bulk-in status 0 ep 86 stream 0 len 49152 id xxxx1 + bulk-in status 0 ep 86 stream 0 len 49152 id xxxx2 + bulk-in status 0 ep 86 stream 0 len 49152 id xxxx3 + bulk-in status 0 ep 86 stream 0 len 49152 id xxxx4 + bulk-out ... + bulk-in status 0 ep 86 stream 0 len 49152 id xxxx50 +------------ \ No newline at end of file |