Lines Matching refs:help
1280 .help = "Text job description",
1289 .help = "Name of this job",
1300 .help = "File(s) to use for the workload",
1310 .help = "Directory to store files in",
1319 .help = "Override default $jobname.$jobnum.$filenum naming",
1329 .help = "Lock file when doing IO to it",
1339 .help = "No file locking",
1343 .help = "Exclusive file lock",
1348 .help = "Read vs write lock",
1358 .help = "Recursively add files from this directory and down",
1369 .help = "IO direction",
1377 .help = "Sequential read",
1381 .help = "Sequential write",
1385 .help = "Sequential trim",
1389 .help = "Random read",
1393 .help = "Random write",
1397 .help = "Random trim",
1401 .help = "Sequential read and write mix",
1405 .help = "Sequential read and write mix",
1409 .help = "Random read and write mix"
1418 .help = "IO offset generator modifier",
1425 .help = "Generate sequential offsets",
1429 .help = "Generate identical offsets",
1439 .help = "IO engine to use",
1445 .help = "Use read/write",
1448 .help = "Use pread/pwrite",
1451 .help = "Use readv/writev",
1455 .help = "Use preadv/pwritev",
1460 .help = "Linux native asynchronous IO",
1465 .help = "POSIX asynchronous IO",
1470 .help = "Solaris native asynchronous IO",
1475 .help = "Windows native asynchronous IO"
1480 .help = "Rados Block Device asynchronous IO"
1484 .help = "Memory mapped IO"
1488 .help = "splice/vmsplice based IO",
1491 .help = "splice/vmsplice to/from the network",
1496 .help = "SCSI generic v3 IO",
1500 .help = "Testing engine (no data transfer)",
1503 .help = "Network IO",
1506 .help = "CPU cycle burner engine",
1510 .help = "GUASI IO engine",
1515 .help = "binject direct inject block engine",
1520 .help = "RDMA IO engine",
1525 .help = "Fusion-io atomic write engine",
1530 .help = "ext4 defrag engine",
1535 .help = "fallocate() file based engine",
1540 .help = "Glusterfs libgfapi(sync) based engine"
1543 .help = "Glusterfs libgfapi(async) based engine"
1548 .help = "Hadoop Distributed Filesystem (HDFS) engine"
1552 .help = "Load external engine (append name)",
1561 .help = "Number of IO buffers to keep in flight",
1574 .help = "Number of IO buffers to submit in one go",
1588 .help = "Number of IO buffers to retrieve in one go",
1602 .help = "Low water mark for queuing depth",
1615 .help = "Total size of device or files",
1636 .help = "Write until an ENOSPC error occurs",
1648 .help = "Size of individual files",
1658 .help = "IO will start at the end of the file(s)",
1669 .help = "Start IO from this offset",
1680 .help = "What is the increment from one offset to the next",
1693 .help = "Force job completion after this number of IOs",
1707 .help = "Block size unit",
1724 .help = "IO block offset alignment",
1743 .help = "Set block size range (in more detail than bs)",
1756 .help = "Set a specific mix of block sizes",
1768 .help = "Don't sector align IO buffer sizes",
1779 .help = "Consider any blocksize setting to be sequential,random",
1790 .help = "Use repeatable random IO pattern",
1802 .help = "Set the random generator seed value",
1820 .help = "Accept potential duplicate random blocks",
1832 .help = "Set norandommap if randommap allocation fails",
1843 .help = "Type of random number generator to use",
1848 .help = "Strong Tausworthe generator",
1852 .help = "Variable length LFSR",
1863 .help = "Random offset distribution generator",
1868 .help = "Completely random",
1872 .help = "Zipf distribution",
1876 .help = "Pareto distribution",
1890 .help = "Percentage of seq/random mix that should be random",
1908 .help = "Use repeatable random numbers for everything",
1919 .help = "Split job workload between this number of files",
1930 .help = "Number of files to keep open at the same time",
1940 .help = "How to select which file to service next",
1947 .help = "Choose a file at random",
1951 .help = "Round robin select files",
1955 .help = "Finish one file before moving to the next",
1967 .help = "Whether pre-allocation is performed when laying out files",
1974 .help = "Do not pre-allocate space",
1978 .help = "Use posix_fallocate()",
1983 .help = "Use fallocate(..., FALLOC_FL_KEEP_SIZE, ...)",
1989 .help = "Alias for 'none'",
1993 .help = "Alias for 'posix'",
2003 .help = "Use fadvise() to advise the kernel on IO pattern",
2013 .help = "Issue fsync for writes every given number of blocks",
2024 .help = "Issue fdatasync for writes every given number of blocks",
2035 .help = "Make every Nth write a barrier write",
2048 .help = "SYNC_FILE_RANGE_WAIT_BEFORE",
2053 .help = "SYNC_FILE_RANGE_WRITE",
2059 .help = "SYNC_FILE_RANGE_WAIT_AFTER",
2066 .help = "Use sync_file_range()",
2076 .help = "Use O_DIRECT IO (negates buffered)",
2087 .help = "Use Atomic IO with O_DIRECT (implies O_DIRECT)",
2098 .help = "Use buffered IO (negates direct)",
2109 .help = "When writing, set whether to overwrite current data",
2119 .help = "Number of times to run the job",
2130 .help = "Duplicate this job this many times",
2142 .help = "Only start job when this period has passed",
2155 .help = "Stop workload when this amount of time has passed",
2167 .help = "Keep running until runtime/timeout is met",
2176 .help = "Verifies previously written data is still valid",
2185 .help = "Ramp up time before measuring performance",
2197 .help = "What type of timing source to use",
2204 .help = "Use gettimeofday(2) for timing",
2210 .help = "Use clock_gettime(2) for timing",
2216 .help = "Use CPU private clock",
2228 .help = "Backing type for IO buffers",
2235 .help = "Use malloc(3) for IO buffers",
2240 .help = "Use shared memory segments for IO buffers",
2245 .help = "Like shm, but use huge pages",
2251 .help = "Use mmap(2) (file or anon) for IO buffers",
2256 .help = "Like mmap, but use huge pages",
2268 .help = "IO memory buffer offset alignment",
2280 .help = "Verify data written",
2287 .help = "Don't do IO verification",
2291 .help = "Use md5 checksums for verification",
2295 .help = "Use crc64 checksums for verification",
2299 .help = "Use crc32 checksums for verification",
2303 .help = "Use crc32c checksums for verification (hw assisted, if available)",
2307 .help = "Use crc32c checksums for verification (hw assisted, if available)",
2311 .help = "Use crc16 checksums for verification",
2315 .help = "Use crc7 checksums for verification",
2319 .help = "Use sha1 checksums for verification",
2323 .help = "Use sha256 checksums for verification",
2327 .help = "Use sha512 checksums for verification",
2331 .help = "Use xxhash checksums for verification",
2335 .help = "Use io information",
2340 .help = "Pretend to verify",
2349 .help = "Run verification stage after write",
2361 .help = "Sort written verify blocks for read back",
2372 .help = "Pre-load and sort verify blocks for a read workload",
2386 .help = "Store verify buffer header every N bytes",
2397 .help = "Offset verify header location by N bytes",
2411 .help = "Fill pattern for IO buffers",
2423 .help = "Exit on a single verify failure, don't continue",
2435 .help = "Dump contents of good and bad blocks on failure",
2447 .help = "Number of async verifier threads to use",
2458 .help = "Verify after this number of blocks are written",
2469 .help = "Verify this number of IO blocks",
2482 .help = "Set CPUs allowed for async verify threads",
2493 .help = "Enable experimental verification",
2503 .help = "Load verify termination state",
2514 .help = "Save verify state on termination",
2527 .help = "Number of verify blocks to discard/trim",
2539 .help = "Verify that trim/discarded blocks are returned as zeroes",
2552 .help = "Trim after this number of blocks are written",
2564 .help = "Trim this number of IO blocks",
2577 .help = "Store IO pattern to file",
2586 .help = "Playback IO pattern from file",
2598 .help = "Playback IO pattern file as fast as possible without stalls",
2609 .help = "Replay all I/O onto this device, regardless of trace device",
2618 .help = "Execute this file prior to running job",
2627 .help = "Execute this file after running job",
2637 .help = "Use this IO scheduler on the backing device",
2647 .help = "Amount of data to read per zone",
2658 .help = "Give size of an IO zone",
2669 .help = "Space between IO zones",
2680 .help = "Lock down this amount of memory (per worker)",
2693 .help = "Percentage of mixed workload that is reads",
2707 .help = "Percentage of mixed workload that is writes",
2726 .help = "Set job CPU nice value",
2740 .help = "Set job IO priority value",
2752 .help = "Set job IO priority class",
2765 .help = "Idle time between IO buffers (usec)",
2776 .help = "Start think time by spinning this amount (usec)",
2789 .help = "IO buffer period between 'thinktime'",
2803 .help = "Set bandwidth rate",
2814 .help = "Job must meet this rate or it will be shutdown",
2827 .help = "Limit IO used to this number of IO operations/sec",
2839 .help = "Job must meet this rate or it will be shut down",
2850 .help = "Window average for rate limits (msec)",
2861 .help = "Maximum tolerated IO latency (usec)",
2871 .help = "Ramp to max queue depth supporting this latency",
2881 .help = "Time to sustain latency_target",
2891 .help = "Percentile of IOs must be below latency_target",
2904 .help = "Invalidate buffer/page cache prior to running job",
2914 .help = "Use O_SYNC for buffered writes",
2926 .help = "Serialize creating of job files",
2936 .help = "fsync file after creation",
2946 .help = "Create files when they are opened for IO",
2955 .help = "Only perform file creation phase",
2964 .help = "Pre-read files before starting official testing",
2976 .help = "CPU affinity mask",
2986 .help = "Set CPUs allowed",
2995 .help = "Distribution policy for cpus_allowed",
3001 .help = "Mask shared between threads",
3005 .help = "Mask split between threads",
3018 .help = "NUMA CPU nodes bind",
3027 .help = "NUMA memory policy setup",
3037 .help = "Include fsync at the end of job",
3047 .help = "fsync files on close",
3057 .help = "Unlink created files after job has completed",
3067 .help = "Terminate all jobs when one exits",
3077 .help = "Insert a hard barrier between this job and previous",
3086 .help = "Mark the start of a new group (for reporting)",
3095 .help = "Use threads instead of processes",
3108 .help = "Write log of bandwidth during run",
3117 .help = "Write log of latency during run",
3126 .help = "Write log of IOPS during run",
3135 .help = "Average bw/iops/lat logs over this period of time",
3145 .help = "Include offset of IO for each log entry",
3156 .help = "Log in compressed chunks of this size",
3167 .help = "Store logs in a compressed format",
3177 .help = "Time window over which to calculate bandwidth"
3191 .help = "Time window over which to calculate IOPS (msec)",
3204 .help = "Do reporting on a per-group basis",
3213 .help = "Init IO buffers to all zeroes",
3222 .help = "Refill IO buffers on every IO submit",
3231 .help = "Slightly scramble buffers on every IO submit",
3242 .help = "Fill pattern for IO buffers",
3254 .help = "How compressible the buffer is (approximately)",
3266 .help = "Size of compressible region in buffer",
3279 .help = "Percentage of buffers that are dedupable",
3289 .help = "Enable the reporting of completion latency percentiles",
3300 .help = "Specify a custom list of percentiles to report",
3315 .help = "Log disk utilization statistics",
3325 .help = "Greatly reduce number of gettimeofday() calls",
3337 .help = "Disable latency numbers",
3349 .help = "Disable completion latency numbers",
3361 .help = "Disable submission latency numbers",
3373 .help = "Disable bandwidth logging",
3385 .help = "Set up dedicated gettimeofday() thread on this CPU",
3394 .help = "Unify reporting across data direction",
3404 .help = "Continue on non-fatal errors during IO",
3411 .help = "Exit when an error is encountered",
3415 .help = "Continue on read errors only",
3419 .help = "Continue on write errors only",
3423 .help = "Continue on any IO errors",
3427 .help = "Continue on verify errors only",
3431 .help = "Continue on all io and verify errors",
3435 .help = "Alias for 'none'",
3439 .help = "Alias for 'all'",
3448 .help = "Set a specific list of errors to ignore",
3458 .help = "Dump info on each error",
3467 .help = "Select a specific builtin performance test",
3476 .help = "Add job to cgroup of this name",
3485 .help = "Do not delete cgroups after job completion",
3496 .help = "Use given weight for cgroup",
3508 .help = "Run job with this user ID",
3517 .help = "Run job with this group ID",
3531 .help = "Use 1024 as the K base",
3535 .help = "Use 1000 as the K base",
3538 .help = "How many bytes per KB for reporting (1000 or 1024)",
3551 .help = "Auto-detect",
3555 .help = "Normal (byte based)",
3559 .help = "Bit based",
3562 .help = "Bit multiple of result summary data (8 for byte, 1 for bit)",
3571 .help = "When using hugepages, specify size of each page",
3582 .help = "The flow index ID to use",
3592 .help = "Weight for flow control of this job",
3604 .help = "High watermark for flow control. This option"
3618 .help = "How many microseconds to sleep after being held"
4127 void add_opt_posval(const char *optname, const char *ival, const char *help) in add_opt_posval() argument
4141 o->posval[i].help = help; in add_opt_posval()
4162 o->posval[i].help = NULL; in del_opt_posval()