diff options
author | Pau Espin Pedrol <pespin@sysmocom.de> | 2017-04-19 13:30:10 +0200 |
---|---|---|
committer | Pau Espin Pedrol <pespin@sysmocom.de> | 2018-04-13 16:12:24 +0200 |
commit | e32095033b4296cced98f57de2255645cc7b2474 (patch) | |
tree | fbcf036a635b148758fac16a049ef68652e42fdc /tests | |
parent | 7787c8cce3f47e7de851e4092b27176a4cc7bd77 (diff) |
tests: jibuf_tool: Improve jibuf_test to read pcaps
Change-Id: I7a13c823fb70e0adbc5fa0726fd66b15dc40014e
Signed-off-by: Pau Espin Pedrol <pespin@sysmocom.de>
Diffstat (limited to 'tests')
-rw-r--r-- | tests/Makefile.am | 19 | ||||
-rw-r--r-- | tests/jibuf/jibuf_tool.c | 362 | ||||
-rw-r--r-- | tests/jibuf/jitter.plt | 32 |
3 files changed, 308 insertions, 105 deletions
diff --git a/tests/Makefile.am b/tests/Makefile.am index a4abca2..dd0e2b2 100644 --- a/tests/Makefile.am +++ b/tests/Makefile.am @@ -2,6 +2,9 @@ AM_CFLAGS = -Wall -I$(top_srcdir)/include $(LIBOSMOCORE_CFLAGS) -g AM_LDFLAGS = $(LIBOSMOCORE_LDFLAGS) check_PROGRAMS = osmux/osmux_test jibuf/jibuf_test jibuf/jibuf_tool +check_HEADERS = \ + osmo-pcap-test/osmo_pcap.h \ + osmo-pcap-test/proto.h osmux_osmux_test_SOURCES = osmux/osmux_test.c osmux_osmux_test_LDADD = $(LIBOSMOCORE_LIBS) $(top_builddir)/src/libosmonetif.la @@ -9,8 +12,20 @@ osmux_osmux_test_LDADD = $(LIBOSMOCORE_LIBS) $(top_builddir)/src/libosmonetif.la jibuf_jibuf_test_SOURCES = jibuf/jibuf_test.c jibuf_jibuf_test_LDADD = $(LIBOSMOCORE_LIBS) $(top_builddir)/src/libosmonetif.la -jibuf_jibuf_tool_SOURCES = jibuf/jibuf_tool.c -jibuf_jibuf_tool_LDADD = $(LIBOSMOCORE_LIBS) $(top_builddir)/src/libosmonetif.la +jibuf_jibuf_tool_SOURCES = \ + jibuf/jibuf_tool.c \ + osmo-pcap-test/proto.c \ + osmo-pcap-test/l2_eth.c \ + osmo-pcap-test/l2_sll.c \ + osmo-pcap-test/l3_ipv4.c \ + osmo-pcap-test/l4_tcp.c \ + osmo-pcap-test/l4_udp.c \ + osmo-pcap-test/pcap.c + +jibuf_jibuf_tool_LDADD = \ + $(LIBOSMOCORE_LIBS) \ + $(top_builddir)/src/libosmonetif.la \ + -lpcap # The `:;' works around a Bash 3.2 bug when the output is not writeable. $(srcdir)/package.m4: $(top_srcdir)/configure.ac diff --git a/tests/jibuf/jibuf_tool.c b/tests/jibuf/jibuf_tool.c index 810ecb4..7550c1c 100644 --- a/tests/jibuf/jibuf_tool.c +++ b/tests/jibuf/jibuf_tool.c @@ -20,6 +20,7 @@ #include <signal.h> #include <arpa/inet.h> #include <sys/time.h> +#include <getopt.h> #include <osmocom/core/select.h> #include <osmocom/core/application.h> @@ -29,6 +30,36 @@ #include <osmocom/netif/jibuf.h> #include <osmocom/netif/rtp.h> +#include "osmo-pcap-test/osmo_pcap.h" + + +struct checkpoint { + struct timeval ts; + int transit; + double jitter; + uint32_t timestamp; +}; + +struct rtp_pkt_info { + struct osmo_timer_list timer; + struct timeval tx_prev_time; + struct timeval tx_time; + uint32_t tx_delay; + struct checkpoint prequeue; + struct checkpoint postqueue; +}; + +struct rtp_pkt_info_cb { + struct rtp_pkt_info *data; +}; + +/* Option parameters to the program */ +static bool opt_test_rand; +static bool opt_debug_human; +static bool opt_debug_table; +static char* opt_pcap_file; +/* ----------------------------- */ + /* Logging related stuff */ #define INT2IDX(x) (-1*(x)-1) struct log_info_cat jibuf_test_cat[] = { @@ -43,6 +74,15 @@ const struct log_info jibuf_test_log_info = { .cat = jibuf_test_cat, .num_cat = ARRAY_SIZE(jibuf_test_cat), }; +/* ----------------------------- */ + +/* Used for test random: */ +#define SAMPLES_PER_PKT 160 +#define RTP_FREQ_MS 20 +#define RTP_PKTS_PER_SEC (1000/RTP_FREQ_MS) +#define NET_DELAY_MS 300 +#define GENERATED_JITTER_MS 160 +#define NUM_PACKETS_TO_SEND 1000 /* RTP packet with AMR payload */ static uint8_t rtp_pkt[] = { @@ -52,51 +92,28 @@ static uint8_t rtp_pkt[] = { 0xf2, 0x26, 0x33, 0x65, 0x54, }; +static struct osmo_jibuf *jb; +static uint16_t rtp_first_seq; +static uint16_t rtp_next_seq; +static uint32_t rtp_next_ts; +static struct timeval tx_prev_time; +static uint32_t packets_sent; +static uint32_t packets_received; +static uint32_t packets_dropped; +static uint32_t packets_too_much_jitter; +/* ----------------------------- */ + +/* Used for test pcap: */ +static struct osmo_pcap osmo_pcap; +static bool pcap_finished; +/* ----------------------------- */ + static void sigalarm_handler(int foo) { printf("FAIL: test did not run successfully\n"); exit(EXIT_FAILURE); } -#define SAMPLES_PER_PKT 160 -#define RTP_FREQ_MS 20 -#define RTP_PKTS_PER_SEC (1000/RTP_FREQ_MS) -#define NET_DELAY_MS 300 -#define GENERATED_JITTER_MS 160 -#define NUM_PACKETS_TO_SEND 1000 - -#define TRACE_PACKE_DEBUG 0 -#define TRACE_PACKET_GNUPLOT 1 -#define TRACE_PACKET_TEST_JITTER 0 - -struct checkpoint { - struct timeval ts; - int transit; - double jitter; -}; - -struct rtp_pkt_info { - struct osmo_timer_list timer; - struct timeval tx_prev_time; - struct timeval tx_time; - uint32_t tx_delay; - struct checkpoint prequeue; - struct checkpoint postqueue; -}; - -struct rtp_pkt_info_cb { - struct rtp_pkt_info *data; -}; - -struct osmo_jibuf *jb; -uint16_t rtp_first_seq; -uint16_t rtp_next_seq; -uint32_t rtp_next_ts; -uint32_t packets_sent; -uint32_t packets_received; -uint32_t packets_dropped; -uint32_t packets_too_much_jitter; - struct rtp_pkt_info *msgb_get_pinfo(struct msgb* msg) { struct rtp_pkt_info_cb *cb = (struct rtp_pkt_info_cb *)&((msg)->cb[0]); @@ -108,14 +125,16 @@ static uint32_t timeval2ms(const struct timeval *ts) return ts->tv_sec * 1000 + ts->tv_usec / 1000; } -int calc_relative_transmit_time(struct timeval *tx_0, struct timeval *tx_f, - struct timeval *rx_0, struct timeval *rx_f) +int32_t calc_rel_transmit_time(uint32_t tx_0, uint32_t tx_f, uint32_t rx_0, uint32_t rx_f, bool tx_is_samples, bool pre) { - struct timeval txdiff, rxdiff, diff; - timersub(rx_f, rx_0, &rxdiff); - timersub(tx_f, tx_0, &txdiff); - timersub(&rxdiff, &txdiff, &diff); - return timeval2ms(&diff); + int32_t rxdiff, txdiff, res; + rxdiff = (rx_f - rx_0); + txdiff = (tx_f - tx_0); + if(tx_is_samples) + txdiff = txdiff * RTP_FREQ_MS/SAMPLES_PER_PKT; + res = rxdiff - txdiff; + //fprintf(stderr, "%s: (%u - %u) - (%u - %u) = %d - %d (%d) = %d\n", (pre ? "pre" : "post"), rx_f, rx_0, tx_f, tx_0, rxdiff, txdiff, (tx_f - tx_0), res); + return res; } void trace_pkt(struct msgb *msg, char* info) { @@ -126,7 +145,7 @@ void trace_pkt(struct msgb *msg, char* info) { gettimeofday(&now, NULL); timersub(&now, &pinfo->tx_time, &total_delay); -#if TRACE_PACKET_DEBUG + if (opt_debug_human) { uint32_t total_delay_ms = timeval2ms(&total_delay); LOGP(DLJIBUF, LOGL_DEBUG, "%s: seq=%"PRIu16" ts=%"PRIu32" (%ld.%06ld) tx_delay=%"PRIu32 \ " end_delay=%"PRIu32" pre_trans=%d pre_jitter=%f post_trans=%d post_jitter=%f\n", @@ -135,9 +154,21 @@ void trace_pkt(struct msgb *msg, char* info) { pinfo->tx_delay, total_delay_ms, pinfo->prequeue.transit, pinfo->prequeue.jitter, pinfo->postqueue.transit, pinfo->postqueue.jitter); -#endif -#if TRACE_PACKET_GNUPLOT + if (pinfo->prequeue.jitter < pinfo->postqueue.jitter) + LOGP(DLJIBUF, LOGL_ERROR, "JITTER HIGHER THAN REF: seq=%"PRIu16" ts=%"PRIu32 \ + " (%ld.%06ld) tx_delay=%"PRIu32" end_delay=%"PRIu32 \ + " pre_trans=%d pre_jitter=%f post_trans=%d post_jitter=%f dropped=%"PRIu32 \ + " buffer=%"PRIu32"\n", + ntohs(rtph->sequence), ntohl(rtph->timestamp), + pinfo->tx_time.tv_sec, pinfo->tx_time.tv_usec, + pinfo->tx_delay, total_delay_ms, + pinfo->prequeue.transit, pinfo->prequeue.jitter, + pinfo->postqueue.transit, pinfo->postqueue.jitter, + packets_dropped, jb->threshold_delay); + } + + if (opt_debug_table) { /* Used as input for gplot: "gnuplot -p jitter.plt -"" */ uint32_t tx_time_ms = timeval2ms(&pinfo->tx_time); uint32_t prequeue_time_ms = timeval2ms(&pinfo->prequeue.ts); @@ -148,7 +179,7 @@ void trace_pkt(struct msgb *msg, char* info) { pinfo->prequeue.transit, pinfo->postqueue.transit, pinfo->prequeue.jitter, pinfo->postqueue.jitter, packets_dropped, jb->threshold_delay); -#endif + } } void pkt_add_result(struct msgb *msg, bool dropped) @@ -162,21 +193,8 @@ void pkt_add_result(struct msgb *msg, bool dropped) packets_received++; trace_pkt(msg,"received"); - if (pinfo->prequeue.jitter < pinfo->postqueue.jitter) { + if (pinfo->prequeue.jitter < pinfo->postqueue.jitter) packets_too_much_jitter++; -#if TRACE_PACKET_TEST_JITTER - LOGP(DLJIBUF, LOGL_ERROR, "JITTER HIGHER THAN REF: %s seq=%"PRIu16" ts=%"PRIu32 \ - " (%ld.%06ld) tx_delay=%"PRIu32" end_delay=%"PRIu32 \ - " pre_trans=%d pre_jitter=%f post_trans=%d post_jitter=%f dropped=%"PRIu32 \ - " buffer=%"PRIu32"\n", - info, ntohs(rtph->sequence), ntohl(rtph->timestamp), - pinfo->tx_time.tv_sec, pinfo->tx_time.tv_usec, - pinfo->tx_delay, total_delay_ms, - pinfo->prequeue.transit, pinfo->prequeue.jitter, - pinfo->postqueue.transit, pinfo->postqueue.jitter, - packets_dropped, jb->threshold_delay); -#endif - } } } @@ -185,14 +203,30 @@ void dequeue_cb(struct msgb *msg, void *data) static struct checkpoint postqueue_prev; static bool postqueue_started = false; + bool tx_is_samples; + struct rtp_hdr *rtph = osmo_rtp_get_hdr(msg); struct rtp_pkt_info *pinfo = msgb_get_pinfo(msg); + uint32_t tx1, tx0, rx0, rx1; + gettimeofday(&pinfo->postqueue.ts, NULL); + pinfo->postqueue.timestamp = htonl(rtph->timestamp); if (postqueue_started) { - pinfo->postqueue.transit = calc_relative_transmit_time( - &pinfo->tx_prev_time, &pinfo->tx_time, - &postqueue_prev.ts, &pinfo->postqueue.ts); + /* In random test mode we now the sender time, so we get real + * jitter results using it */ + if(opt_test_rand) { + tx0 = timeval2ms(&pinfo->tx_prev_time); + tx1 = timeval2ms(&pinfo->tx_time); + tx_is_samples = false; + } else { + tx0 = postqueue_prev.timestamp; + tx1 = pinfo->postqueue.timestamp; + tx_is_samples = true; + } + rx0 = timeval2ms(&postqueue_prev.ts); + rx1 = timeval2ms(&pinfo->postqueue.ts); + pinfo->postqueue.transit = calc_rel_transmit_time(tx0, tx1, rx0, rx1, tx_is_samples, 0); uint32_t abs_transit = pinfo->postqueue.transit * ( pinfo->postqueue.transit >= 0 ? 1 : -1 ); @@ -218,15 +252,32 @@ void pkt_arrived_cb(void *data) static struct checkpoint prequeue_prev; static bool prequeue_started = false; + bool tx_is_samples; struct msgb *msg = (struct msgb*) data; + struct rtp_hdr *rtph = osmo_rtp_get_hdr(msg); struct rtp_pkt_info *pinfo = msgb_get_pinfo(msg); + + uint32_t tx1, tx0, rx0, rx1; + gettimeofday(&pinfo->prequeue.ts, NULL); + pinfo->prequeue.timestamp = htonl(rtph->timestamp); if (prequeue_started) { - pinfo->prequeue.transit = calc_relative_transmit_time( - &pinfo->tx_prev_time, &pinfo->tx_time, - &prequeue_prev.ts, &pinfo->prequeue.ts); + /* In random test mode we now the sender time, so we get real + * jitter results using it */ + if(opt_test_rand) { + tx0 = timeval2ms(&pinfo->tx_prev_time); + tx1 = timeval2ms(&pinfo->tx_time); + tx_is_samples = false; + } else { + tx0 = prequeue_prev.timestamp; + tx1 = pinfo->prequeue.timestamp; + tx_is_samples = true; + } + rx0 = timeval2ms(&prequeue_prev.ts); + rx1 = timeval2ms(&pinfo->prequeue.ts); + pinfo->prequeue.transit = calc_rel_transmit_time(tx0, tx1, rx0, rx1, tx_is_samples, 1); uint32_t abs_transit = pinfo->prequeue.transit * ( pinfo->prequeue.transit >= 0 ? 1 : -1 ); @@ -250,9 +301,15 @@ void pkt_arrived_cb(void *data) } } +struct rtp_pkt_info * msgb_allocate_pinfo(struct msgb *msg) +{ + struct rtp_pkt_info_cb *cb = (struct rtp_pkt_info_cb *)&((msg)->cb[0]); + cb->data = (struct rtp_pkt_info *) talloc_zero(msg, struct rtp_pkt_info); + return cb->data; +} + void rand_send_rtp_packet() { - static struct timeval tx_prev_time; struct rtp_pkt_info *pinfo; struct rtp_hdr *rtph; @@ -282,9 +339,7 @@ void rand_send_rtp_packet() rtph->timestamp = htonl(rtp_next_ts); rtp_next_ts += SAMPLES_PER_PKT; - pinfo = talloc_zero(msg, struct rtp_pkt_info); - struct rtp_pkt_info_cb *cb = (struct rtp_pkt_info_cb *)&((msg)->cb[0]); - cb->data = pinfo; + pinfo = msgb_allocate_pinfo(msg); gettimeofday(&pinfo->tx_time, NULL); pinfo->tx_prev_time = tx_prev_time; @@ -300,9 +355,9 @@ void rand_send_rtp_packet() osmo_timer_schedule(&pinfo->timer, 0, pinfo->tx_delay * 1000); } -void generate_pkt_cb(void *data) +void rand_generate_pkt_cb(void *data) { - static struct osmo_timer_list enqueue_timer = {.cb = generate_pkt_cb, .data = NULL}; + static struct osmo_timer_list enqueue_timer = {.cb = rand_generate_pkt_cb, .data = NULL}; static struct timeval last_generated; struct timeval time_rate = { .tv_sec = 0, .tv_usec = RTP_FREQ_MS * 1000}; @@ -322,37 +377,56 @@ void generate_pkt_cb(void *data) } } -void check_results() + +static int pcap_generate_pkt_cb(struct msgb *msg) +{ + struct rtp_pkt_info *pinfo; + /* Set fake prev_time for 1st packet. Otherwise transit calculations for first + * packet can be really weird if they not arrive in order */ + if (!packets_sent) { + struct timeval now, time_rate = { .tv_sec = 0, .tv_usec = RTP_FREQ_MS * 1000}; + gettimeofday(&now, NULL); + timersub(&now, &time_rate, &tx_prev_time); + } + + pinfo = msgb_allocate_pinfo(msg); + gettimeofday(&pinfo->tx_time, NULL); + pinfo->tx_prev_time = tx_prev_time; + + tx_prev_time = pinfo->tx_time; + packets_sent++; + pkt_arrived_cb(msg); + return 0; +} + +void pcap_pkt_timer_cb(void *data) +{ + if (osmo_pcap_test_run(&osmo_pcap, IPPROTO_UDP, pcap_generate_pkt_cb) < 0) { + osmo_pcap_stats_printf(); + osmo_pcap_test_close(osmo_pcap.h); + pcap_finished=true; + } +} + +void rand_test_check() { uint32_t drop_threshold = NUM_PACKETS_TO_SEND * 5 / 100; if (packets_dropped > drop_threshold) { fprintf(stdout, "Too many dropped packets (%"PRIu32" > %"PRIu32")\n", packets_dropped, drop_threshold); - exit(1); + exit(EXIT_FAILURE); } uint32_t jitter_high_threshold = NUM_PACKETS_TO_SEND * 8 / 100; if (packets_too_much_jitter > jitter_high_threshold) { fprintf(stdout, "Too many packets with higher jitter (%"PRIu32" > %"PRIu32")\n", packets_too_much_jitter, jitter_high_threshold); - exit(1); + exit(EXIT_FAILURE); } } -int main(void) +void rand_test() { - - if (signal(SIGALRM, sigalarm_handler) == SIG_ERR) { - perror("signal"); - exit(EXIT_FAILURE); - } - - /* This test doesn't use it, but jibuf requires it internally. */ - osmo_init_logging(&jibuf_test_log_info); - log_set_category_filter(osmo_stderr_target, DLMIB, 1, LOGL_ERROR); - log_set_print_filename(osmo_stderr_target, 0); - log_set_log_level(osmo_stderr_target, LOGL_INFO); - srandom(time(NULL)); rtp_first_seq = (uint16_t) random(); rtp_next_seq = rtp_first_seq; @@ -364,7 +438,8 @@ int main(void) osmo_jibuf_set_dequeue_cb(jb, dequeue_cb, NULL); - generate_pkt_cb(NULL); + /* first run */ + rand_generate_pkt_cb(NULL); /* If the test takes longer than twice the time needed to generate the packets plus 10 seconds, abort it */ @@ -375,7 +450,106 @@ int main(void) osmo_jibuf_delete(jb); - check_results(); + rand_test_check(); +} + +void pcap_test_check() { + +} + +void pcap_test() { + osmo_pcap_init(); + + osmo_pcap.h = osmo_pcap_test_open(opt_pcap_file); + if (osmo_pcap.h == NULL) + exit(EXIT_FAILURE); + + osmo_pcap.timer.cb = pcap_pkt_timer_cb; + + jb = osmo_jibuf_alloc(NULL); + osmo_jibuf_set_dequeue_cb(jb, dequeue_cb, NULL); + osmo_jibuf_set_min_delay(jb, 60); + osmo_jibuf_set_max_delay(jb, 500); + + /* first run */ + pcap_pkt_timer_cb(NULL); + + while(!pcap_finished || !osmo_jibuf_empty(jb)) + osmo_select_main(0); + + osmo_jibuf_delete(jb); + + pcap_test_check(); +} + +static void print_help(void) +{ + printf("jibuf_test [-r] [-p pcap] [-d] [-g]\n"); + printf(" -h Print this help message\n"); + printf(" -r Run test with randomly generated jitter\n"); + printf(" -p Run test with specified pcap file\n"); + printf(" -d Enable packet trace debug suitable for humans\n"); + printf(" -t Enable packet trace debug suitable for gnuplot\n"); +} + +static int parse_options(int argc, char **argv) +{ + int opt; + + while ((opt = getopt(argc, argv, "hdtrp:")) != -1) { + switch (opt) { + case 'h': + print_help(); + return -1; + case 'd': + opt_debug_human = true; + break; + case 't': + opt_debug_table = true; + break; + case 'r': + opt_test_rand = true; + break; + case 'p': + opt_pcap_file = strdup(optarg); + break; + default: + return -1; + } + } + + return 0; +} + +int main(int argc, char **argv) +{ + + if (signal(SIGALRM, sigalarm_handler) == SIG_ERR) { + perror("signal"); + exit(EXIT_FAILURE); + } + + if(parse_options(argc, argv) < 0) + exit(EXIT_FAILURE); + + osmo_init_logging(&jibuf_test_log_info); + log_set_print_filename(osmo_stderr_target, 0); + log_set_log_level(osmo_stderr_target, LOGL_DEBUG); + + if(opt_debug_human && !opt_debug_table) + log_set_category_filter(osmo_stderr_target, DLMIB, 1, LOGL_DEBUG); + + if(opt_pcap_file && opt_test_rand) { + print_help(); + exit(EXIT_FAILURE); + } + + + if(opt_pcap_file) + pcap_test(); + + if(opt_test_rand) + rand_test(); fprintf(stdout, "OK: Test passed\n"); return EXIT_SUCCESS; diff --git a/tests/jibuf/jitter.plt b/tests/jibuf/jitter.plt index 37deb65..0235170 100644 --- a/tests/jibuf/jitter.plt +++ b/tests/jibuf/jitter.plt @@ -23,13 +23,27 @@ set ytics nomirror #set y2label 'delay [ms]' #set y2tics nomirror -plot \ - '/tmp/bla' using 3:5 with linespoints title 'pre.trans' axes x1y1, \ - '/tmp/bla' using 4:6 with linespoints title 'post.trans' axes x1y1, \ - '/tmp/bla' using 3:7 with linespoints title 'pre.jitter' axes x1y1, \ - '/tmp/bla' using 4:8 with linespoints title 'post.jitter' axes x1y1, \ - '/tmp/bla' using 3:9 with linespoints title 'pre.dropped' axes x1y1, \ - '/tmp/bla' using 3:10 with linespoints title 'pre.buffer' axes x1y1, \ - '/tmp/bla' using 3:((column(3)-column(2))) with linespoints title 'pre.delay' axes x1y1, \ - '/tmp/bla' using 4:((column(4)-column(2))) with linespoints title 'post.delay' axes x1y1 +# For pcap based input, 'pre.delay' makes no sense (it's 0) as we can't know tx_delay +pcap = 1 +if (pcap) { + plot \ + '/tmp/bla' using 3:5 with linespoints title 'pre.trans' axes x1y1, \ + '/tmp/bla' using 4:6 with linespoints title 'post.trans' axes x1y1, \ + '/tmp/bla' using 3:7 with linespoints title 'pre.jitter' axes x1y1, \ + '/tmp/bla' using 4:8 with linespoints title 'post.jitter' axes x1y1, \ + '/tmp/bla' using 3:9 with linespoints title 'pre.dropped' axes x1y1, \ + '/tmp/bla' using 3:10 with linespoints title 'pre.buffer' axes x1y1, \ + '/tmp/bla' using 4:((column(4)-column(2))) with linespoints title 'post.delay' axes x1y1 + +} else { + plot \ + '/tmp/bla' using 3:5 with linespoints title 'pre.trans' axes x1y1, \ + '/tmp/bla' using 4:6 with linespoints title 'post.trans' axes x1y1, \ + '/tmp/bla' using 3:7 with linespoints title 'pre.jitter' axes x1y1, \ + '/tmp/bla' using 4:8 with linespoints title 'post.jitter' axes x1y1, \ + '/tmp/bla' using 3:9 with linespoints title 'pre.dropped' axes x1y1, \ + '/tmp/bla' using 3:10 with linespoints title 'pre.buffer' axes x1y1, \ + '/tmp/bla' using 3:((column(3)-column(2))) with linespoints title 'pre.delay' axes x1y1, \ + '/tmp/bla' using 4:((column(4)-column(2))) with linespoints title 'post.delay' axes x1y1 +} pause mouse close; exit |