stress-ng Files

stress-ng V0.19.04 "rapid ram rattler"

New Stressors:

• mmaprandom - extensive memory map random page mapping/unmapping stressor
• chyperbolic - complex hyperbolic math function exerciser
• ctrig - complex trigonometric math function exerciser

New options to force memory limits (for example, ENOMEM on memory allocates)

• --limit-as - limit virtual memory (address space)
• --limit-data - limit data segment (initialized data, uninitialized data, and heap)
• --limit-stack - limit stack size

Detailed Changelog

Author: Anisse Astier an.astier@criteo.com * core-target-clones: add arch=znver[1-5]

Author: Artur Malchanau artur.molchanov@bolt.eu * core-helper: fix source-date-epoch field indentation

Author: Colin Ian King colin.i.king@gmail.com * core-*: Fix spelling mistake "re-used" -> "reused" * kernel-coverage: Fix typo in comment "Covert" -> "Convert" * stress-list: move do_jmp flag after SIGALRM handler is restored * stress-hdd: add build-time checks for pwrite2, pwritev and writev * stress-hdd: add build-time checks for preadv2, preadv and readv * stress-mmaprandom: declare stress_mmaprandom_madvise_pages when required * stress-mmaprandom: voidify page_size if not used * CITATIONS.md: add a couple more links to papers * stress-ng: rephrase "out of system resources" to "no system resources" * stress-fd-race: use sscanf to parse strings * stress-dev: use sscanf to parse strings * stress-bad-ioctl: use sscanf to parse strings * core-processes: use sscanf to parse strings * core-parse-opts: use sscanf to parse strings * core-helper: use sscanf to parse strings * core-cpuidle: use sscanf to parse strings * core-cpu-cache: use sscanf to parse strings * core-cpu-cache: use atol instead of atoi for int scans * stress-x86syscall: use shim_strlcat instead of unsafe strcat * core-cpu-cache: use atol instead of atoi for 32 bit int scans * stress-vdso: use shim_strlcat instead of unsafe strcat * stress-mmaprandom: cast addresses to uintptr_t for 32 bit portability * stress-mmaprandom: only test for MAP_HUGETLB if MAP_HUGETLB is defined * stress-mmaprandom: fix MAP_32BIT setting * stress-chyperbolic: complex hyperbolic math function stressor * Manual: fix missing .RE after ctrig section * stress-ctrig: fix missing , * stress-ctrig: reduce accuracy of csinf and ccosf for m68k * stress-ctrig: complex trig stressor * stress-hrtimers: don't set hrtimer in hrtimer signal handler * stress-timer: don't set timer in timer signal handler * stress-iomix: fix --iomix-bytes option to allow % sizes * stress-signest: periodically shuffle signal order * stress-mmaprandom: exercise procmap query ioctls on /proc/self/maps * stress-schedmix: enable SCHED_FLAG_DL_OVERRUN if it is defined * stress-schedpolicy: enable SCHED_FLAG_DL_OVERRUN if it is defined * stress-schedpolicy: enable SCHED_FLAG_DL_OVERRUN sched flag * stress-schedmix: enable SCHED_FLAG_DL_OVERRUN sched flag * core-shared-cache: used shared anon mmap abstractions for cache mapping * stress-fractal: don't use atomic builtins for Fiwix * core-mmap: add shared anon mmap abstractions * stress-mmaprandom: add non O_EXCL shm_open flags to mix * core-limit add some struct field comments * core-limit: remove commented out pasted code * stress-ng: add --limit-as, --limit-data, --limit-stack options * stress-mmaprandom: add mseal calls to private mappings * stress-procfs: exercise /proc/mtrr with some invalid ioctls * stress-ng: make --aggressive cpu affinity switching less frequent * Manual: update description of --aggressive option * kernel-coverage: add more coverage stressor options * stress-mmaprandom: relax need for backing for remap_file_pages calls * stress-mmaprandom: use same flags for splitting, fix flags for shm_posix * stress-mmaprandom: rename SysV -> System V, remove debug * stress-mmaprandom: add posix shm * stress-mmaprandom: exercise System V shared memory * README.md: Update contributor list * Manual: update mmaprandom description * stress-mmaprandom: exercise remap_file_pages * stress-mmaprandom: throttle /proc reading to 10Hz * stress-mmaprandom: read various /proc files that are memory related * stress-ng: write-only page should be PROT_WRITE * stress-memthrash: use different localities for prefetch * stress-mmaprandom: add randomized invalud mmap calls * stress-filename: add explicit utf8 and utf8-like filename options * stress-udp: only declare so_reuseaddr when it is required * stress-sockmany: only declare so_reuseaddr when it is required * stress-sockabuse: only declare so_reuseaddr when it is required * stress-sock: only declare variable i when it is required * stress-bitops: use correct format specifiers for integer and bool types * stress-ng: use PRId32 format specifier for started_instances * stress-bitops: use correct format specifiers for integer and bool types * stress-cpu: print int value using %d * stress-filename: use PRIu32 for uint32_t value * stress-shm-sysv: use PRIu32 for uint32_t value * stress-ng: use PRId32 for int32_t type * core-shared-cache: use PRIu32 format specifier for uint32_t field ways * core-out-of-memory: use PRIu32 specifier for uint32_t values * core-helper: cast info fields to match format specifier * CITATIONS.md: add another link to some research * Manual: fix up some style formatting for examples * stress-mmaprandom: remove empty lines and whitespaces * stress-mmaprandom: set the mmapmax default to the correct value * stress-mmaprandom: add cloned chile thay umappings random mappings * stress-mmapremap: limit to 65536 mappongs, fix rnd map masking * stress-mmaprandom: add RB tree for randomized node selection * core-ops: add OPT_mmaprandom_maxpages * stress-mmaprandom: add new --mmaprandom-maxpages option * stress-mmaprandom: add /dev/zero as file backed mapping file * README.md: fix formating for bullet point * stress-mmaprandom: inline stress_mmaprandom_get_random_size * stress-mmaprandom: remove TARGET_CLONES from stress_mmaprandom_read * stress-mmaprandom: if page is read+write perform atomic op on page * stress-mmaprandom: twiddle file rw hints for file based mmaps * stress-mmaprandom: twiddle random file flags on file based mmaps * stress-mmaprandom: remove empty lines * stress-mmaprandom: use different fallocate strategy for 4K pages * stress-mmaprandom: madvise using process_madvise * README.md: add kernel commit of issue found by stress-ng * stress-mmaprandom: add MAP_DROPPABLE flag * stress-loop: exercise fallocate and ftruncate on loop device * stress-mmaprandom: don't allow madvise to poison pages * stress-mmaprandom: replace advise -> advice * stress-mmaprandom: don't allow madvise to poison pages * core-memory: fix build issues when HUGETLB macros are not defined * core-memory: return 0 bytes rather than false * core-memory: remove some residual debug messages * core-memory: replace stress_munmap_retry_enomem with stress_munmap_force * core-memory: voidify arg pid * stress-mmaprandom: move #ifdef, fixes DragonFlyBSD build * stress-mmaprandom: fix spelling mistake "inmplemented" -> "implemented" * stress-mmaprandom: voidify page_size arg * stress-mmaprandom: move #endif to fix BSD builds * core-memory: check for failed file open * stress-mmaprandom: check for low memory before forking * Manual: add --mmaprandom-numa option * stress-mmaprandom: add --mmaprandom-numa option * core-madvise: move common madvise_options to core-madvise * stress-mmaprandom: add comments, code cleanup * stress-mmaprandom: provide 0 for madvise_unmap_options * stress-mmaprandom: use fallocate where possible to allocate file backed data * stress-mmaprandom: add MWC_RND_ELEMENT to get random element from array * stress-mmaprandom: add O3 hint on various functions * stress-mmaprandom: optimize stress_mmaprandom_get_random_used * stress-mmaprandom: add page prefetch into L2 cache * stress-mmaprandom: force CoW page faults on random unmaps on child exit * stress-mmaprandom: replace builtin_memset with shim version * stress-mmaprandom: add forking to duplicate and unmap mappings * stress-mmaprandom: set anonymous name of mmapping via prctl * stress-mmapregion: apply munmap friendly madvise when unmapping regions * stress-mmaprandom: try to perform fixed address mmaps * stress-mmaprandom: unmap regions in address order * stress-mmaprandom: reduce scope for variable count * stress-mmaprandom: use shim_mincore instead of mincore * stress-mmaprandom: add build time checks for MAP_NORESERVE * stress-mmaprandom: relax __APPLE bsd checks * stress-tree: relax APPLE bsd checks * stress-mmaprandom: add some LIKELY/UNLIKELY branch hints * stress-mmaprandom: update some comments * stress-mmaprandom: munmap by pages or by whole region * stress-mmaprandom: don't msync on PROT_NONE mappings * stress-mmaprandom: rename mra -> mr_node * stress-mmaprandom: fix spacing -> tabs * stress-mmaprandom: add no-hole mapping splitting * stress-mmaprandom: don't insert page between joins, add some optimizations * stress-mmaprandom: optimize memory read/write ops * stress-mmaprandom: check for null mras * stress-mmaprandom: clean up error return path resource free'ing * stress-mmaprandom: move rb tree to start of node * stress-mmaprandom: fill pages with less randomized data * stress-mmaprandom: reduce joining scans * stress-mmaprandom: allow huge pages * stress-mmaprandom: open file with NO_ATIME where possible * stress-mmaprandom: add more page umapping, splitting and joining * stress-mmaprandom: perform randomized mapping operations