V0.18.08

stress-ng V0.18.08 "systematic system smasher"

New Stressors

• regex - POSIX regular expression stressor
• cachehammer - cache flush/prefetch/read/write stressor
• veccmp - integer vector comparison stressor

New Options

• --vm-numa - bind pages to randomly selected NUMA nodes
• --mmap-numa - bind pages to randomly selected NUMA nodes
• --poll-random-us - specify ppoll/pselect timeout

Detailed Changelog:

Dominik Steinberger:

• Fix return type of numa core dummy functions

Colin Ian King:

• Makefile: bump version
• stress-fma: just offset array to get add/sub flavours of fma funcs
• stress-veccmp: add compiler version checks for older compilers
• core-helper: re-order signals
• stress-signest: add in missing signals SIGCONT, SIGTSTP and SIGUNUSED
• core-helper: add WSL file system magic to file magic ids
• stress-acl: inform number of ACLs tested vs number of valid ACLs
• stress-cachehammer: make local_buffer and local_page non-clobberable
• Update copyright year
• kernel-coverage: add a handful of missing options for more coverage
• stress-mmap: make help and mmap-numa messages easier to comprehend
• stress-vm : add --vm-numa option to bind pages to randomly selected NUMA nodes
• stress-mmap: add --mmap-numa option to bind pages to randomly selected NUMA nodes
• stress-bitops: add two more bitop methods, power of 2 check and zero byte check
• Manual: add line space before tables
• stress-lsm: use uint8_t * pointer math
• test/test-mq-posix.c: include <fcntl.h>
• core*, stress*: cast char to unsigned char for ctype.h functions
• stress-ptr-chase: remove extraneous tab
• README.md: add another research paper link
• core-numa: fix for builds with partial NUMA support
• stress-cachehammer: remove unused variable masked_flags
• stress-regex: make function stress_regex_rate static
• stress-regex: disable lazy numbers, some regcomps fail on this */
• stress-cachehammer: make variable ret non-clobberable
• stress-regex: add some simple regex compilation error checking
• stress-regex: add some more regex patterns and strings to match
• stress-regex: remove html tag regex and reduce devious regexes
• stress-cachehammer: randomize local cache mappings across NUMA nodes
• stress-cachehammer: add 1 page shared page and 64 byte read/write hammering
• stress-cachehammer: dup cache ops for ppc
• stress-lockbus: rename HAVE_MISALIGNED_LOCKBUS to HAVE_NUMA_LOCKBUS
• stress-regex: fix missing , after literal string
• stress-regex: add a POSIX regular expressions stressor
• README.md: update contributors list
• stress-cachehammer: fix RISC-V built, fix missing {
• stress-cachehammer: add ppc64 specifif cache operations
• stress-ng: ensure stress_pid_t reaped flag is initialized on fork
• stress-mutex: add tab to align fields
• core*, stress*: replace memcmp to shim_memcmp
• core*, stress*: replace memcpy to shim_memcpy
• core*, stress*: replace memset to shim_memset
• stress-mutex: re-order mutex checks on success/failures
• stress-gendent: simplify j wrap to zero logic
• stress-lockbus: make numa_mask nonclobberable and fix free
• stress-lsm: add parentheses around expression
• stress-prio-inv: remove early return statement
• stress-cachehammer: add new stressor to exercise prefetch/flush cache ops
• stress-aio: cache align info struct for minor performance improvement
• stress-aiol: report async I/O event rate as an extra metric
• stress-aiol: move random aiol allocations and ctx_id into a struct
• core-ignite-cpu: make freq_delta and limit number of retries
• stress-aiol: inline shim wrappers for io_* system calls
• stress-tlb-shootdown: add space in while(..)
• stress-access: add space in while(..)
• stress-nop: add LIKELY hints on while loops
• stress-ng: re-work aggressive pid waiting to use stress_wait_pid
• stress-ng: also check for ECHILD on waitpid failure
• stress-nop: fix 14 and 15 byte no-ops for x86
• core-opts.h: sort short options
• Manual: add missing -M short option for --metrics
• stress-ng: make -w a short option for --with
• stress-ng: add -K to option parsing
• stress-ng: make -K short hand for --klog-check
• stress-bitops: fix short help, remove -c option
• stress-mcontent: enforce read/write order
• stress-memthrash: add loop unrolling to stress_memthrash_memset64
• stress-memrate: remove init arg from macros
• stress-cache: only add prefetchw to help if it exists
• stress-cache: add write prefetchw option
• Manual: fix missing - on memhotplug-mmap option
• stress-bad-ioct: allow to run as root and write ioctls using PROT_NONE pages
• Manual: update lockbus description for NUMA page randomization
• stress-lockbus: split buffer across NUMA pages
• stress-misaligned: use stress_numa_randomize_pages
• core-numa: add stress_numa_randomize_pages to randomize pages
• core-helper: keep file system magic in sync with linux
• stress-vm-addr: unroll loops, minor performance improvement
• stress-sigtrap: make t, duration static, aligned variable raised
• stress-sigill: remove a few empty lines
• stress-shm-sysv: unroll loops to improve throughput
• stress-shm: add UNLIKELY hint on loop break
• stress-set: reduce frequency of calls to stress_get_unused_uid
• stress-rotate: unroll loop 8 times, improves performance
• stress-dekker, stress-peterson: use memory barrier for ARM
• stress-prio-inv: when fifo/rr fails, retry with SCHED_OTHER policy
• core-mwc.h: fix missing #else .. #endif for mwc*modn decls
• stress-sigurg: ignore SIGPIPE failures
• stress-pseek: optimize bad data checking loop
• stress-poll: add LIKELY hint to check on max_fds as it's very likely
• stress-poll: add --poll-random-us option to specify ppoll/pselect timeout
• stress-mutex: rename mutex_exercise to stress_mutex_exercise
• stress-mtx: improve performance if unlikely metrics_count reset
• stress-msyncmany: add UNLIKELY to if statement that almost never try
• stress-workload: add vecfp double precision vector math workload
• stress-mmapfixed: use 64 bit vec array to improve non-zero check speed
• stress-mmap: use mwc*modn instead of using %, fix 64 bit version
• stress-memfd: remove more of the NT store function selection
• stress-memfd: remove NT stores, they weren't beneficial
• stress-malloc: correct bogo-ops accounting and fix up man page
• stress-ng: use pointer info to avoid multiple triple derefs
• stress-jpeg: replace modulo with compare and set
• stress-hash: don't allocate fixed sized hash bucket and buffer on heap
• stress-fma: align double/float arrays, improve performance on SNB
• core-mwc: inline modulo mwc functions with HAVE_FAST_MODULO_REDUCTION support
• core-time: add unlikely hints on if statements that are not likely to be true
• stress-aiol: improve fill and check buffer helpers
• core-lock: add LIKELY/UNLIKELY hints on various if statements
• stress-acl: use acl_cmp() where is is available, fallback to naive version if not
• stress-af-alg: don't fail with EINVAL on bind calls
• stress-af-alg: check for zero crypto items before allocate and sort
• stress-far-branch: map pages in as shared and not private
• core*: Remove NONNULL attribute macro
• core-mwc: improve modulo mwc variants using modulo reduction trick
• core-rapl: remove NONNULL attributes
• stress-vecmath: fix checksum checking for 128 unsigned int bit vector
• stress-veccmp: add a vector comparison op stressor
• stress-memthrash: use non-temporal load/stores in spinread/write loops
• stress-fma: alternatively perform subtraction in fma ops
• stress-memthrash: add randomized mbind move to the mbind mix
• stress-numa: use MPOL_MF_MOVE in mbind call
• stress-misaligned: use MPOL_MF_MOVE in mbind call
• stress-misaligned: randomized misaligned buffer across NUMA nodes
• core-numa: add new stress_numa_mask_t type for NUMA mask handling
• stress-unlink: ensure all fds[] are initialized before main loop
• stress-sctp: pass int64_t types for SCTP_MAXSEG and SCTP_MAX_BURST sock opts
• core-klog: replace \0xa escape string with space
• stress*: Fix typos: stess* -> stress*
• stress-ng: continue loops if run should be ignored