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Message-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline X-Chocolate: 70 percent or better cocoa solids preferably X-Operating-System: Linux/6.12.113+deb13-amd64 (x86_64) X-Uptime: 14:08:46 up 3 days, 23:29, 2 users, load average: 0.08, 0.08, 0.03 User-Agent: Mutt/2.2.13 (2024-03-09) Hi all, I was looking for some tips on if I can use bwmon to see what interconnect bandwidth is going through the dwc3 usb controllers on my x1 based Asus Zenbook A14. I've got usb-ncm gadget wired between a pair of them and I'd like to see what stats are available; (See details of my gadget stuff setup in https://lore.kernel.org/linux-arm-msm/atJn2jfI_cZy3UMo@gallifrey/T/#u ) And that's struggling to get much over 4Gbit/s over the network interface. One reason I'm curious is because the dwc3-qcom glue sets an average and a peak icc limit, and I wanted to know what the difference was and what the type of timescales were for how long it allowed a peak. Are there any docs I should look at? I did: trace-cmd stream -e icc_bwmon:qcom_bwmon_update > log on both machines and during the run I'm seeing events on exactly 3 of the monitors; 24091000.pmu, 240b5400.pmu, 240b6400.pmu (In the numbers below I've grepped for that monitor and sed'ed out upto the 'measu_kbps=' part so I can then sort on the meas_kbps) My reading of the interconnects_summary is these PMUs are somewhere under the llcc_mc@interconnect-1, and in some cases under both chm_apps@ and qns_llcc So how do I interpret these - can I infer the bandwidth the usb controller is using or just have a feel for the level above? (Here the iperf -s server is running on 'dragon' and the client is running on 'soup' - I find the partial symmetry between 240b[56]400.pmu on the two machines promising it's measuring something useful!) This is running a 7.30-rc6 with a bunch of stuff from Jens Glathe on top. Thanks in advance, Dave (numbers below) 24091000.pmu on the llcc_mc@interconnect-1 (which also has the a400000.usb) dragon/server: lowest: 16000 up_kbps=800001 down_kbps=800000 heighest: 2816000 up_kbps=3072001 down_kbps=2188000 h-l: 2800000 2272000 1388000 soup/client: lowest: 160000 up_kbps=800001 down_kbps=800000 highest: 6256000 up_kbps=6835201 down_kbps=6220800 h-l 6096000 6035200 5420800 240b5400.pmu on the chm_apps@26400000.interconnect (which also has the a400000.usb) also under qns_llcc@26400000.interconnect dragon/server: lowest: 1328000 up_kbps=4800001 down_kbps=4800000 heighest: 5616000 up_kbps=7464001 down_kbps=4800000 h-l 4288000 2664000 0 soup/client: lowest: 1440000 up_kbps=4800001 down_kbps=4800000 highest: 4480000 up_kbps=4800001 down_kbps=4800000 h-l 3040000 0 0 240b6400.pmu same as for 240b5400 dragon/server: lowest: 352000 up_kbps=4800001 down_kbps=4800000 highest: 3568000 up_kbps=4800001 down_kbps=4800000 h-l 3216000 0 0 soup/client: lowest: 3216000 up_kbps=4800001 down_kbps=4800000 heighest: 8736000 up_kbps=9600001 down_kbps=7464000 h-l 5520000 4800000 2664000 -- -----Open up your eyes, open up your mind, open up your code ------- / Dr. David Alan Gilbert | Running GNU/Linux | Happy \ \ dave @ treblig.org | | In Hex / \ _________________________|_____ http://www.treblig.org |_______/