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720(Special)S1076(Notes:)S720 H3347 V732( )S12 R930(\267)S11 R1105(On)S1273(Tru64)S1575(UNIX)S1882(systems,)S2293(these)S2552(options)S2911(are)S3077(not)S3252(necessary,)S3738(since)S3997(this)S4191(information)S4744(is)S4853(obtained)S5266(via)S720 H3477 V1105(the)S1272(DECIOCGET)S1927(or)S2051(DEVGETINFO)S2778(IOCTL's:)S720 H3607 V732( )S12 R930(\267)S11 R1105(Although)S1564(the)S1741(program)S2155(accepts)S2519(a)S2610(large)S2872(number)S3251(of)S3386(device)S3715(types,)S4019(as)S4154(shown)S4485(below,)S4825(speci\256c)S5204(tests)S720 H3737 V1105(only)S1341(exists)S1632(for)S1799("disk",)S2141("tape",)S2481("\256fo",)S2792(and)S2989("terminal")S3484(device)S3808(types.)S4140(Others)S4471(may)S4699(be)S4841(added)S5141(in)S5266(the)S720 H3867 V1105(future.)S720 H3997 V732( )S12 R930(\267)S11 R1105(In)S1231(the)S1400(case)S1622(of)S1748("disk")S2057(device)S2378(type,)S11 I2631(dt)S11 R2753(reports)S3093(the)S3263(relative)S3627(block)S3907(number)S4278(when)S4551(read,)S4802(write,)S5091(or)S5218(data)S720 H4127 V1105(compare)S1514(errors)S1801(occur.)S720 H4257 V732( )S12 R930(\267)S11 R1105(Also)S1358(for)S1530("disk")S1850(devices,)S11 I2252(dt)S11 R2384(will)S2602(automatically)S3246(determine)S3730(the)S3910(disk)S4140(capacity)S4550(if)S4663(a)S4757(data)S4985(or)S5122(record)S720 H4387 V1105(limit)S1348(is)S1455(not)S1629(speci\256ed.)S2113(This)S2342(is)S2449(done)S2695(via)S2862(a)S2943(series)S3225(of)S3349(seek/read)S3794(requests.)S720 H4517 V732( )S12 R930(\267)S11 R1105(On)S1275(each)S1511(operating)S1962(system)S2305(supported,)S2803(string)S3091(compares)S3547(are)S3716(done)S3966(on)S4113(well)S4339(known)S4675(device)S4997(names)S5314(to)S720 H4647 V1105(automatically)S1749(select)S2044(the)S2224(device)S2555(type.)S2851(For)S3050(example)S3467(on)S3623(QNX,)S3934("/dev/hd")S4400(for)S4573(disk,)S4831("/dev/tp")S5273(for)S720 H4777 V1105(tapes,)S1391(and)S1582("/dev/ser")S2052(for)S2212(serial)S2482(lines.)S720 H4907 V732( )S12 R930(\267)S11 R1105(The)S1308(device)S1626(type)S1848(gets)S2058(displayed)S2512(in)S2631(the)S2798(total)S3027(statictics.)S720 H5138 V11 C984(Syntax:)S720 H5268 V1248(dtype=string)S2304(Sets)S2634(the)S2898(device)S3360(type.)S720 H5398 V1248(idtype=string)S2304(Sets)S2634(the)S2898(input)S3294(device)S3756(type.)S720 H5528 V1248(odtype=string)S2304(Sets)S2634(the)S2898(output)S3360(device)S3822(type.)S720 H5723 V984(The)S1248(Valid)S1644(Device)S2106(Types)S2502(Are:)S720 H5853 V1248(audio)S1908(comm)S2568(disk)S3228(graphics)S3888(memory)S720 H5983 V1248(mouse)S1908(network)S2568(fifo)S3228(pipe)S3888(printer)S720 H6113 V1248(processor)S1908(socket)S2568(special)S3228(streams)S3888(tape)S720 H6243 V1248(terminal)S1908(unknown)S720 H6438 V11 R720(Note:)S1047(Although)S11 I1513(dt)S11 R1649(does)S1900(not)S2091(provide)S2476(speci\256c)S2862(test)S3066(support)S3447(for)S3625(each)S3875(of)S4017(the)S4202(devices)S4581(shown)S4919(above,)S5259(its')S720 H6568 V720(design)S1047(makes)S1367(it)S1469(easy)S1703(to)S1829(add)S2027(new)S2249(device)S2574(speci\256c)S2949(tests.)S3245(Speci\256c)S3638(support)S4007(exists)S4297(for)S4463(disk,)S4714(\256fo,)S4934(pipe,)S5190(tape,)S720 H6698 V720(and)S911(terminals.)S1381(Support)S1763(for)S1923("ptys")S2230(may)S2452(be)S2588(added)S2882(in)S3001(the)S3168(future)S3462(as)S3586(well.)S720 H7690 V2909(Page 6)S7920 VEP%%PageTrailer%DEC_EDMS_Folio: 8%%Page: 7 9BP/slant 0 def/height 1.000000 def11 R11 R720 H670 V11 I720(Users Manual for)S4507(February 2nd, 2001)S720 H800 V720(dt - Data Test Program)S4832(Version 14.1)S720 H1210 V12 B720(4.14)S1002(Error)S1337(Limit)S1661(")S12 I1728(errors=)S12 B2111(")S2214(Option.)S720 H1376 V11 R970(This)S1199(option)S1514(controls)S1901(the)S2068(maximum)S2548(number)S2916(of)S3040(errors)S3327(tolerated)S3743(before)S4054(the)S4221(program)S4625(exits.)S720 H1571 V720(Special)S1076(Notes:)S720 H1701 V732( )S12 R930(\267)S11 R1105(The)S1308(default)S1645(error)S1889(limit)S2132(is)S2239(1.)S720 H1831 V732( )S12 R930(\267)S11 R1105(All)S1297(errors)S1602(have)S1859(a)S1958(time)S2205(stamp)S2519(associated)S3020(with)S3267(them,)S3567(which)S3887(may)S4128(be)S4283(useful)S4603(for)S4782(characterizing)S720 H1961 V1105(intermittent)S1652(error)S1896(conditions.)S720 H2091 V732( )S12 R930(\267)S11 R1105(The)S1314(error)S1564(limit)S1813(is)S1926(adjusted)S2331(for)S2497(read,)S2751(write,)S3043(or)S3173(data)S3394(compare)S3809(failures.)S4238(This)S4474(limit)S4724(is)S4838(not)S5019(enforced)S720 H2221 V1105(when)S1380(\257ushing)S1774(data,)S2022(or)S2151(for)S2316(certain)S2651(AIO)S2883(wait)S3110(operations)S3605(which)S3911(are)S4081(considered)S4592(non-fatal)S5024(\(perhaps)S720 H2351 V1105(this)S1298(will)S1503(change\).)S720 H2481 V732( )S12 R930(\267)S11 R1105(A)S1233(future)S1544(release)S1896(may)S2135(support)S2515(an)S2668(")S11 I2713(onerr=)S11 R3032(")S3127(option)S3459(to)S3595(control)S3956(the)S4140(action)S4458(of)S4599(errors)S4903(\(e.g.,)S5176(loop,)S720 H2611 V1105(ignore)S1418(\(continue\),)S1929(or)S2053(exit\).)S720 H2842 V11 C984(Syntax:)S720 H2972 V1248(errors=value)S2370(The)S2634(number)S3096(of)S3294(errors)S3756(to)S3954(tolerate.)S720 H3203 V12 B720(4.15)S1002(File)S1232(Limit)S1556(")S12 I1623(\256les=)S12 B1899(")S2002(Option.)S720 H3369 V11 R970(This)S1199(option)S1514(controls)S1901(the)S2068(number)S2436(of)S2560(tape)S2775(\256les)S2992(to)S3111(process)S3472(with)S3701(tape)S3916(devices.)S720 H3564 V720(Special)S1076(Notes:)S720 H3694 V732( )S12 R930(\267)S11 R1105(During)S1452(the)S1622(write)S1883(pass,)S2136(a)S2220(tape)S2438(\256le)S2615(mark)S2876(is)S2986(written)S3333(after)S3568(each)S3803(\256le.)S4041(After)S4307(all)S4453(\256les)S4673(are)S4841(written,)S5217(1)S5309(or)S720 H3824 V1105(2)S1193(\256le)S1367(marks)S1668(will)S1873(be)S2009(written)S2353(automatically)S2984(by)S3127(the)S3294(tape)S3509(driver)S3803(when)S4073(the)S4240(device)S4558(is)S4665(closed.)S720 H3954 V732( )S12 R930(\267)S11 R1105(During)S1456(reads,)S1754(each)S1993(\256le)S2174(is)S2288(expected)S2716(to)S2842(be)S2985(terminated)S3494(by)S3644(a)S3732(\256le)S3914(mark)S4180(and)S4379(read\(\))S4679(system)S5026(calls)S5268(are)S720 H4084 V1105(expected)S1535(to)S1663(return)S1966(a)S2056(value)S2335(of)S2467(0)S2563(denoting)S2989(the)S3164(end)S3363(of)S3495(\256le.)S3738(When)S4040(reading)S4409(past)S4627(all)S4778(tapes)S5044(\256les,)S5297(an)S720 H4214 V1105(errno)S1368(of)S1492(ENOSPC)S1948(is)S2055(expected)S2476(to)S2595(\257ag)S2793(the)S2960(end)S3151(of)S3275(media)S3576(condition.)S720 H4344 V732( )S12 R930(\267)S11 R1105(Writing)S1480(tape)S1695(\256le)S1869(marks)S2170(is)S2278(currently)S2707(not)S2882(supported)S3349(on)S3493(the)S3661(QNX)S3932(Operating)S4404(System.)S4824(The)S5028(release)S5364(I)S720 H4474 V1105(currently)S1551(have)S1808(does)S2060(not)S2252(support)S2633(the)S2818(mtio)S3072(commands,)S3627(and)S3836(unfortunately)S4477(the)S4661(POSIX)S5029(standard)S720 H4604 V1105(does)S11 B1340(not)S11 R1527(de\256ne)S1829(this)S2023(interface)S2438(\(the)S2642(mtio)S2879(interface)S3294(appears)S3661(to)S3781(be)S3918(a)S4000(UNIX)S4307(speci\256c)S4677(standard\).)S5180(Mul-)S720 H4734 V1105(tiple)S1334(tape)S1549(\256les)S1766(can)S1950(still)S2150(be)S2286(read)S2506(on)S2649(QNX)S2919(systems)S3301(however.)S720 H4965 V11 C984(Syntax:)S720 H5095 V1248(files=value)S2370(Set)S2634(number)S3096(of)S3294(tape)S3624(files)S4020(to)S4218(process.)S720 H5326 V12 B720(4.16)S1002(Terminal)S1519(Flow)S1808(Control)S2244(")S12 I2311(\257ow=)S12 B2593(")S2696(Option.)S720 H5492 V11 R970(This)S1199(option)S1514(speci\256es)S1925(the)S2092(terminal)S2491(\257ow)S2720(control)S3064(to)S3183(use)S3362(during)S3682(testing.)S720 H5687 V720(Special)S1076(Notes:)S720 H5817 V732( )S12 R930(\267)S11 R1105(The)S1308(default)S1645(\257ow)S1874(control)S2218(is)S2325("xon_xo)S2700 H (f)show 11 -.5 mul h (f)show11 R2768(".)S720 H5947 V732( )S12 R930(\267)S11 R1105(When)S1403(using)S1680(XON/XOFF)S2268(\257ow)S2502(control,)S2879(you)S3082(must)S3335(make)S3610(sure)S3830(these)S4093(byte)S4320(codes)S4607(\(Ctrl/Q)S4963(=)S5063(XON)S5338(=)S720 H6077 V1105('\\021',)S1436(Ctrl/S)S1736(=)S1833(XOFF)S2150(=)S2247('\\023\),)S2578(since)S2838(the)S3007(program)S3413(does)S3648(not)S3823(\256lter)S4065(these)S4324(out)S4499(automatically.)S5192(Also)S720 H6207 V1105(be)S1242(aware)S1535(of)S1660(terminal)S2060(servers)S2403(\(e.g.,)S2660(LAT\),)S2971(or)S3096(modems)S3503(\(e.g.,)S3760(DF296\))S4136(which)S4438(may)S4661(eat)S4822(these)S5081(charac-)S720 H6337 V1105(ters.)S720 H6467 V732( )S12 R930(\267)S11 R1105(Some)S1394(serial)S1669(lines)S1915(do)S11 B2063(not)S11 R2254(support)S2622(clear-to-send)S3230(\(CTS\))S3543(or)S3672(request-to-send)S4385(\(RTS\))S4698(modem)S5066(signals.)S720 H6597 V1105(For)S1310(example)S1733(on)S1895(Alpha)S2215(Flamingo)S2690(machines,)S3184(only)S3432(one)S3642(port)S3871(\(/dev/tty00\))S4442(supports)S4866(full)S5070(modem)S720 H6727 V1105(control,)S1485(while)S1770(the)S1945(alternate)S2362(console)S2739(port)S2958(\(/dev/tty01\))S3519(does)S3762(not.)S4006(Therefore,)S4505(if)S4614(running)S4998(loopback)S720 H6857 V1105(between)S1513(both)S1753(ports,)S2045(you)S2254(can)S2449(not)S2634(use)S11 I2824(cts_rts)S11 R3162(\257ow)S3402(control,)S3785(the)S3963(test)S4160(will)S4376(hang)S4632(waiting)S5005(for)S5175(these)S720 H6987 V1105(signals)S1444(to)S1563(transition)S2012(\(at)S2160(least,)S2422(I)S2491(think)S2751(this)S2944(is)S3051(the)S3218(case\).)S720 H7690 V2909(Page 7)S7920 VEP%%PageTrailer%DEC_EDMS_Folio: 9%%Page: 8 10BP/slant 0 def/height 1.000000 def11 R11 R720 H670 V11 I720(Users Manual for)S4507(February 2nd, 2001)S720 H800 V720(dt - Data Test Program)S4832(Version 14.1)S720 H1210 V11 C984(Syntax:)S720 H1340 V1248(flow=type)S2370(Set)S2634(flow)S2964(to:)S3228(none,)S3624(cts_rts,)S4218(or)S4416(xon_xoff.)S720 H1571 V12 B720(4.17)S1002(Record)S1410(Increment)S1979(")S12 I2046(incr=)S12 B2322(")S2425(Option.)S720 H1737 V11 R970(This)S1226(option)S1568(controls)S1982(the)S2176(bytes)S2468(incremented)S3069(when)S3366(testing)S3720(variable)S4132(length)S4467(records.)S4910(After)S5201(each)S720 H1867 V720(record,)S1070(this)S1274(increment)S1756(value)S2037(\(default)S2421(1\),)S2584(is)S2702(added)S3007(to)S3137(the)S3315(last)S3512(record)S3834(size)S4048(\(starting)S4458(at)S4581(")S11 I4626(min=)S11 R4866(",)S4983(up)S5137(to)S5266(the)S720 H1997 V720(maximum)S1200(record)S1511(size)S1714(")S11 I1759(max=)S11 R2016("\).)S720 H2192 V720(Special)S1076(Notes:)S720 H2322 V732( )S12 R930(\267)S11 R1105(If)S1213(variable)S1601(length)S1912(record)S2226(testing)S2556(is)S2666(enabled)S3042(on)S3188(\256xed)S3444(block)S3724(disks)S3987(and)S4182(this)S4379(option)S4698(is)S4809(omitted,)S5211(then)S720 H2452 V1105(")S11 I1150(incr=)S11 R1435(defaults)S1815(to)S1934(512)S2132(bytes.)S720 H2683 V11 C984(Syntax:)S720 H2813 V1248(incr=value)S2370(Set)S2634(number)S3096(of)S3294(record)S3756(bytes)S4152(to)S4350(increment.)S720 H2943 V984(or)S1248(incr=variable)S2370(Enables)S2898(variable)S3492(I/O)S3756(request)S⌨️ 快捷键说明
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