Timing Parameters
The emc_log timing parameters are described in the following
diagram:
In the above figure, four clients are specified, and a period of 3 is specified. The start delay is 1 s.
To sample a group
- The following command samples the
mpcoregroup for 30 seconds:emc_log -chip <TBD_chip_id> -group mpcore -length 30
To sample an individual client
- The following command samples the
nvdisplayrclient for 30 seconds:emc_log -chip <TBD_chip_id> -client nvdisplayr -length 30
To sample multiple clients
- The following command samples the clients
nvdisplayrandnvdisplayr1for 30 seconds:emc_log -chip <TBD_chip_id> -client nvdisplayr -client nvdisplayr1 -length 30
- The following code shows the
emc_logcommands and output.# emc_log -chip <TBD_chip_id> -help [77/1864] emc_log version 2.0.0 CHIPID: TEGRA_CHIPID_TEGRA<TBD_t-arch> Usage: emc_log [-option] Options: -help : Print this help screen -chip <chipid> : Specify the chip id, the supported chips are: 0x40, 0x13, 0x21 and 0x18. The option is required for chip 0x18 -group <groupName> : Collect stats for all clients in <groupName> -client <clientName> : Collect stats for <clientName> -window <int> : Sample every <int> ms, default = 1000 ms -startdelay <int> : Delay sampling for <int> seconds (default = 1s) -length <int> : Sample for at least <int> seconds (default = 10s) -period <int> : Set the period for rescheduling -mode <none/address/client> : Set the mode for rescheduling -address_low <int> : Set the low address for address filtering -address_length <int> : Set the total range of address for address filtering -address_window_size <int> : Set the size of window for address filtering (address mode only) -o <filename> : If specified, output data to this file. Otherwise, output data to stdout -verbose : Print details from log buffer -total : Collect the total stats for all clients specified -debug : Print commands sent to sysfs -slack_hi : Set the SLACK_LIMIT_HI -slack_lo : Set the SLACK_LIMIT_LO -stats <bw/expired/histo>: Select the statistics to be collected More than one client / group can be specified at a time. If more clients are specified than the hardware can sample simultaneously, clients will be sampled in a round-robin order. Group Client ID ptc ptcr 0 afi afir 14 hda hdar 21 hc host1xdmar 22 nvenc nvencsrd 28 sata satar 31 mpcore mpcorer 39 nvenc nvencswr 43 afi afiw 49 hda hdaw 53 mpcore mpcorew 57 sata sataw 61 isp2 ispra 68 isp2 ispwa 70 isp2 ispwb 71 xusb_host xusb_hostr 74 xusb_host xusb_hostw 75 xusb_dev xusb_devr 76 xusb_dev xusb_devw 77 tsec tsecsrd 84 tsec tsecswr 85 gpu gpusrd 88 gpu gpuswr 89 sdmmc1a sdmmcra 96 sdmmc2a sdmmcraa 97 sdmmc3a sdmmcr 98 sdmmc4a sdmmcrab 99 sdmmc1a sdmmcwa 100 sdmmc2a sdmmcwaa 101 sdmmc3a sdmmcw 102 sdmmc4a sdmmcwab 103 vic vicsrd 108 vic vicswr 109 vi viw 114 nvdec nvdecsrd 120 nvdec nvdecswr 121 ape aper 122 ape apew 123 nvjpg nvjpgsrd 126 nvjpg nvjpgswr 127 se sesrd 128 se seswr 129 etr etrr 132 etr etrw 133 tsecb tsecsrdb 134 tsecb tsecswrb 135 gpu gpusrd2 136 gpu gpuswr2 137 axis axisr 140 axis axisw 141 eqos eqosr 142 eqos eqosw 143 ufshc ufshcr 144 ufshc ufshcw 145 nvdisplay nvdisplayr 146 bpmp bpmpr 147 bpmp bpmpw 148 bpmp bpmpdmar 149 bpmp bpmpdmaw 150 aon aonr 151 aon aonw 152 aon aondmar 153 aon aondmaw 154 sce scer 155 sce scew 156 sce scedmar 157 sce scedmaw 158 ape apedmar 159 ape apedmaw 160 nvdisplay nvdisplayr1 161 vic vicsrd1 162 nvdec nvdecsrd1 163 emc dram_stat_begin 165 dram activate_cnt 165 dram read_cnt 166 dram read8_cnt 167 dram write_cnt 168 dram write8_cnt 169 dram ref_cnt 170 dram extclks_cke_eq0_no_banks_active 171 dram clkstop_cke_eq0_no_banks_active 172 dram extclks_cke_eq1_no_banks_active 173 dram clkstop_cke_eq1_no_banks_active 174 dram extclks_cke_eq0_some_banks_active 175 dram clkstop_cke_eq0_some_banks_active 176 dram extclks_cke_eq1_some_banks_active 177 dram clkstop_cke_eq1_some_banks_active 178 dram sr_cke_eq0_clks 179 dram dsr 180 readtally 253 writetally 254 aggregate 255 ============================================================== emc_log -chip <TBD_chip_id> -group mpcore /emc_log version 2.0.0 CHIPID: TEGRA_CHIPID_TEGRA<TBD_t-arch> Delay sampling for 1 seconds... Start sampling for 10 seconds... debug_fs = /sys/kernel/debug Duration(ms) Client ID Bandwidth(KBps) 1000 39 181273.093750 1000 57 164767.687500 1000 39 181272.203125 1000 57 164773.265625 1000 39 181252.015625 1000 57 164762.453125 1000 39 181229.359375 1000 57 164745.640625 1000 39 181245.625000 1000 57 164762.562500 1000 39 181219.078125 1000 57 164737.031250 1000 39 181261.812500 1000 57 164781.703125 1000 39 181275.265625 1000 57 164793.890625 1000 39 181292.203125 1000 57 164804.015625 ============================================================== emc_log -chip <TBD_chip_id> -group nvdisplay emc_log version 2.0.0 CHIPID: TEGRA_CHIPID_TEGRA<TBD_t-arch> Delay sampling for 1 seconds... Start sampling for 10 seconds... debug_fs = /sys/kernel/debug Duration(ms) Client ID Bandwidth(KBps) 1000 146 0.000000 1000 161 0.000000 1000 146 0.000000 1000 161 0.000000 1000 146 0.000000 1000 161 0.000000 1000 146 0.000000 1000 161 0.000000 1000 146 0.000000 1000 161 0.000000 1000 146 0.000000 1000 161 0.000000 1000 146 0.000000 1000 161 0.000000 1000 146 0.000000 1000 161 0.000000 1000 146 0.000000 1000 161 0.000000 ============================================================== emc_log -chip <TBD_chip_id> -client nvdisplayr emc_log version 2.0.0 CHIPID: TEGRA_CHIPID_TEGRA<TBD_t-arch> Delay sampling for 1 seconds... Start sampling for 10 seconds... debug_fs = /sys/kernel/debug Duration(ms) Client ID Bandwidth(KBps) 1000 146 0.000000 1000 146 0.000000 1000 146 0.000000 1000 146 0.000000 1000 146 0.000000 1000 146 0.000000 1000 146 0.000000 1000 146 0.000000 1000 146 0.000000