Em Wed, Oct 24, 2007 at 02:35:42PM +0100, Gerrit Renker escreveu: > Quoting Arnaldo Carvalho de Melo: > | > I think that dccpprobe.c is the wrong name ... it should really be called ccid3_probe.c ... > | > I have been working on printing entries for CCID2, since in ccid2.c there is no probe support, > | > and instead ccid2_pr_debug is used for the same purpose all over the place. > | > | Indeed, lemme try converting it right now... > | > This is how far I came (only for info, applies only on test tree): Cool, but what I meant to say was that I was going to try and convert dccpprobe to be a systemtap script, and this is how far I went, forgot about x_calc, something fishy there, but take a look at the dccp_ccid3_probe.stp and its output. The full sources for the tapsets used (for things like ccid3_hc_tx_sk_rtt(), etc) are at: http://oops.ghostprotocols.net:81/acme/nettaps.tar.bz2 Still a bit hackish, as we don't expose the ccids header files in include/net/ for systemtap to use and I tried this on a kernel packaged as an RPM (kernel-debuginfo, etc), perhaps something to consider changing. But I used include/linux/tfrc.h, that is exposed and had what I want. Ah, and this was over gigabit ethernet, over wi-fi it gets to a crawl after a while, have to check with your experimental tree, probably you already fixed this issue. [root@mica nettaps]# cat dccp_ccid3_probe.stp #!/usr/bin/stap global filter_dport = 5001 global rtts global x_calcs global ipis probe dccp_user_out = module("dccp").function("dccp_sendmsg") { dport = inet_sk_dport($sk) x_calc = ccid3_hc_tx_sk_x_calc($sk) rtt = ccid3_hc_tx_sk_rtt($sk) ipi = ccid3_hc_tx_sk_ipi($sk) } probe dccp_user_out { if (dport != filter_dport) next rtts <<< rtt x_calcs <<< x_calc ipis <<< ipi } probe end { printf("rtt: count: %d, min: %d, max: %d, avg: %d\n", @count(rtts), @min(rtts), @max(rtts), @avg(rtts)) print(@hist_linear(rtts, 0, 1000, 20)) printf("x_calc: count: %d, min: %d, max: %d, avg: %d\n", @count(x_calcs), @min(x_calcs), @max(x_calcs), @avg(x_calcs)) print(@hist_linear(x_calcs, 0, 100000, 2000)) printf("ipi: count: %d, min: %d, max: %d, avg: %d\n", @count(ipis), @min(ipis), @max(ipis), @avg(ipis)) print(@hist_linear(ipis, 0, 600, 10)) } [root@mica nettaps]# [root@mica nettaps]# stap -I tapset/ dccp_ccid3_probe.stp # to finish it press control+C rtt: count: 38746, min: 0, max: 390, avg: 286 value |-------------------------------------------------- count 0 | 1 20 | 0 40 | 0 60 | 0 80 | 0 100 | 0 120 | 0 140 | 0 160 | 17 180 | 19 200 | 21 220 |@ 248 240 |@@@@@@@@@@@@@@@@@@@@@@@@ 5510 260 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ 10143 280 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ 11290 300 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ 9095 320 |@@@@@@ 1476 340 |@@ 463 360 |@ 370 380 | 93 400 | 0 420 | 0 x_calc: count: 38746, min: 0, max: 0, avg: 0 value |-------------------------------------------------- count 0 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ 38746 2000 | 0 4000 | 0 ipi: count: 38746, min: 0, max: 7473, avg: 162 value |-------------------------------------------------- count 0 | 1 10 |@@@@ 654 20 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ 7255 30 |@@@@@@@@@@@@@@@@@@@ 2876 40 |@@@@@@@@@@@@@@@@@@@@@@ 3232 50 |@@@@@@@@@@@@@@@@@@@@@@@@@ 3678 60 |@@@@@@@@@@@@@@@@@@@ 2775 70 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@ 4188 80 |@@@@@@@@@@@@@@ 2186 90 |@@@@@@@@@@@@@ 1986 100 |@@@@@@ 940 110 |@@@@@ 813 120 |@@@@@@@@@@ 1579 130 |@@@@@ 738 140 |@ 226 150 |@@@@@@@@ 1235 160 |@@ 399 170 |@@@ 452 180 | 0 190 |@ 289 200 | 0 210 | 116 220 | 0 230 |@@ 311 240 | 0 250 |@@ 414 260 | 0 270 | 119 280 | 0 290 | 0 300 |@@@@@@@@ 1184 310 |@@ 412 320 | 0 330 | 0 340 | 0 350 | 0 360 | 0 370 | 0 380 | 0 390 | 0 400 | 0 410 | 0 420 | 0 430 | 0 440 | 0 450 | 0 460 | 0 470 | 0 480 | 0 490 | 0 500 | 0 510 | 0 520 | 0 530 | 0 540 | 0 550 | 0 560 | 0 570 | 0 580 | 0 590 |@@@@ 688 [root@mica nettaps]# - To unsubscribe from this list: send the line "unsubscribe dccp" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
