def run_dbg_lat(nfp, dma, write_read, win_sz, trans_sz, h_off, d_off, rnd,
long_run, cache_flags, outdir):
"""Run latency debug test"""
twr = TableWriter(nfp.lat_fmt)
twr.open(outdir + "dbg_lat", TableWriter.ALL)
cdfwr = TableWriter(LAT_TEST_CDF_FMT, stdout=False)
cdfwr.open(outdir + "dbg_lat_details_cdf", TableWriter.ALL)
flags = cache_flags
if rnd:
flags |= nfp.FLAGS_RANDOM
if long_run:
flags |= nfp.FLAGS_LONG
if dma:
if write_read:
test_no = nfp.LAT_DMA_WRRD
else:
test_no = nfp.LAT_DMA_RD
else:
if write_read:
test_no = nfp.LAT_CMD_WRRD
else:
test_no = nfp.LAT_CMD_RD
lat_stats = nfp.lat_test(twr, test_no, flags, win_sz, trans_sz, h_off,
d_off)
h_cyc = lat_stats.histo()
cdf_cyc = histo2cdf(h_cyc)
vals = sorted(cdf_cyc.keys())
cdfwr.sec("test=%s trans_sz=%d win_sz=%d" %
(nfp.TEST_NAMES[test_no], trans_sz, win_sz))
cdfwr.out((vals[0], nfp.cyc2ns(vals[0]), 0))
for val in vals:
cdfwr.out((val, nfp.cyc2ns(val), cdf_cyc[val]))
cdfwr.close(TableWriter.ALL)
twr.close(TableWriter.ALL)
def run_lat_details(nfp, outdir):
"""Run a longer test and perform some analysis"""
win_szs = [8192, 64 * 1024 * 1024]
common_flags = nfp.FLAGS_LONG | nfp.FLAGS_RANDOM
# Commands latencies
trans_szs = [8]
twr = TableWriter(nfp.lat_fmt)
twr.open(outdir + "lat_cmd_details", TableWriter.ALL)
cdfwr = TableWriter(LAT_TEST_CDF_FMT, stdout=False)
cdfwr.open(outdir + "lat_cmd_details_cdf", TableWriter.ALL)
raw = open(outdir + "lat_cmd_details_raw.dat", 'w')
twr.msg("\nPCIe CMD latencies with more details")
for test_no in [nfp.LAT_CMD_RD, nfp.LAT_CMD_WRRD]:
twr.sec()
for trans_sz in trans_szs:
for win_sz in win_szs:
for flags in [common_flags, common_flags | nfp.FLAGS_HOSTWARM]:
lat_stats = nfp.lat_test(twr, test_no, flags, win_sz,
trans_sz, 0, 0)
h_cyc = lat_stats.histo()
cdf_cyc = histo2cdf(h_cyc)
vals = sorted(cdf_cyc.keys())
cdfwr.sec("test=%s trans_sz=%d win_sz=%d cache=%s" %
(nfp.TEST_NAMES[test_no], trans_sz, win_sz,
"hwarm" if flags & nfp.FLAGS_HOSTWARM \
else "cold"))
cdfwr.out((vals[0], nfp.cyc2ns(vals[0]), 0))
for val in vals:
cdfwr.out((val, nfp.cyc2ns(val), cdf_cyc[val]))
# write raw data
raw.write(
"# %s %s Winsz=%d trans_sz=%d (values in ns)\n" %
(nfp.TEST_NAMES[test_no], "Warm" if flags
& nfp.FLAGS_HOSTWARM else "Cold", win_sz, trans_sz))
for t in lat_stats.list:
raw.write("%.0f\n" % nfp.cyc2ns(t))
raw.write("\n\n")
cdfwr.close(TableWriter.ALL)
twr.close(TableWriter.ALL)
raw.close()
# DMA latencies
trans_szs = [64, 2048]
twr = TableWriter(nfp.lat_fmt)
twr.open(outdir + "lat_dma_details", TableWriter.ALL)
cdfwr = TableWriter(LAT_TEST_CDF_FMT, stdout=False)
cdfwr.open(outdir + "lat_dma_details_cdf", TableWriter.ALL)
raw = open(outdir + "lat_dma_details_raw.dat", 'w')
twr.msg("\nPCIe DMA latencies with more details")
for test_no in [nfp.LAT_DMA_RD, nfp.LAT_DMA_WRRD]:
twr.sec()
for trans_sz in trans_szs:
for win_sz in win_szs:
for flags in [common_flags, common_flags | nfp.FLAGS_HOSTWARM]:
lat_stats = nfp.lat_test(twr, test_no, flags, win_sz,
trans_sz, 0, 0)
h_cyc = lat_stats.histo()
cdf_cyc = histo2cdf(h_cyc)
vals = sorted(cdf_cyc.keys())
cdfwr.sec("test=%s trans_sz=%d win_sz=%d cache=%s" %
(nfp.TEST_NAMES[test_no], trans_sz, win_sz,
"hwarm" if flags & nfp.FLAGS_HOSTWARM \
else "cold"))
cdfwr.out((vals[0], nfp.cyc2ns(vals[0]), 0))
for val in vals:
cdfwr.out((val, nfp.cyc2ns(val), cdf_cyc[val]))
# write raw data
raw.write(
"# %s %s Winsz=%d trans_sz=%d (values in ns)\n" %
(nfp.TEST_NAMES[test_no], "Warm" if flags
& nfp.FLAGS_HOSTWARM else "Cold", win_sz, trans_sz))
for t in lat_stats.list:
raw.write("%.0f\n" % nfp.cyc2ns(t))
raw.write("\n\n")
cdfwr.close(TableWriter.ALL)
twr.close(TableWriter.ALL)
raw.close()