~carstengrohmann/OOMAnalyser

c8a6f74d0365581971e503e4177612f2de938470 — Carsten Grohmann a month ago c1a5ed3
Move more configuration to class BaseKernelConfig
2 files changed, 116 insertions(+), 115 deletions(-)

M OOMAnalyser.py
M test.py
M OOMAnalyser.py => OOMAnalyser.py +114 -113
@@ 153,6 153,111 @@ class BaseKernelConfig:
    name = 'Base configuration for all kernels'
    """Name/description of this kernel configuration"""

    EXTRACT_PATTERN = {
        'invoked oom-killer': (
            r'^(?P<trigger_proc_name>[\S ]+) invoked oom-killer: '
            r'gfp_mask=(?P<trigger_proc_gfp_mask>0x[a-z0-9]+)(\((?P<trigger_proc_gfp_flags>[A-Z_|]+)\))?, '
            r'(nodemask=(?P<trigger_proc_nodemask>([\d,-]+|\(null\))), )?'
            r'order=(?P<trigger_proc_order>-?\d+), '
            r'oom_score_adj=(?P<trigger_proc_oomscore>\d+)',
            True,
        ),
        'Trigger process and kernel version': (
            r'^CPU: \d+ PID: (?P<trigger_proc_pid>\d+) '
            r'Comm: .* (Not tainted|Tainted:.*) '
            r'(?P<kernel_version>\d[\w.-]+) #\d',
            True,
        ),

        # split caused by a limited number of iterations during converting PY regex into JS regex
        'Mem-Info (part 1)': (
            r'^Mem-Info:.*'
            r'(?:\n)'

            # first line (starting w/o a space)
            r'^active_anon:(?P<active_anon_pages>\d+) inactive_anon:(?P<inactive_anon_pages>\d+) '
            r'isolated_anon:(?P<isolated_anon_pages>\d+)'
            r'(?:\n)'

            # remaining lines (w/ leading space)
            r'^ active_file:(?P<active_file_pages>\d+) inactive_file:(?P<inactive_file_pages>\d+) '
            r'isolated_file:(?P<isolated_file_pages>\d+)'
            r'(?:\n)'

            r'^ unevictable:(?P<unevictable_pages>\d+) dirty:(?P<dirty_pages>\d+) writeback:(?P<writeback_pages>\d+) '
            r'unstable:(?P<unstable_pages>\d+)',
            True,
        ),
        'Mem-Info (part 2)': (
            r'^ slab_reclaimable:(?P<slab_reclaimable_pages>\d+) slab_unreclaimable:(?P<slab_unreclaimable_pages>\d+)'
            r'(?:\n)'
            r'^ mapped:(?P<mapped_pages>\d+) shmem:(?P<shmem_pages>\d+) pagetables:(?P<pagetables_pages>\d+) '
            r'bounce:(?P<bounce_pages>\d+)'
            r'(?:\n)'
            r'^ free:(?P<free_pages>\d+) free_pcp:(?P<free_pcp_pages>\d+) free_cma:(?P<free_cma_pages>\d+)',
            True,
        ),
        'Memory node information': (
            r'(^Node \d+ (DMA|Normal|hugepages).*(:?\n))+',
            False,
        ),
        'Page cache': (
            r'^(?P<pagecache_total_pages>\d+) total pagecache pages.*$',
            True,
        ),
        'Swap usage information': (
            r'^(?P<swap_cache_pages>\d+) pages in swap cache'
            r'(?:\n)'
            r'^Swap cache stats: add \d+, delete \d+, find \d+\/\d+'
            r'(?:\n)'
            r'^Free swap  = (?P<swap_free_kb>\d+)kB'
            r'(?:\n)'
            r'^Total swap = (?P<swap_total_kb>\d+)kB',
            False,
        ),
        'Page information': (
            r'^(?P<ram_pages>\d+) pages RAM'
            r'('
            r'(?:\n)'
            r'^(?P<highmem_pages>\d+) pages HighMem/MovableOnly'
            r')?'
            r'(?:\n)'
            r'^(?P<reserved_pages>\d+) pages reserved'
            r'('
            r'(?:\n)'
            r'^(?P<cma_pages>\d+) pages cma reserved'
            r')?'
            r'('
            r'(?:\n)'
            r'^(?P<pagetablecache_pages>\d+) pages in pagetable cache'
            r')?'
            r'('
            r'(?:\n)'
            r'^(?P<hwpoisoned_pages>\d+) pages hwpoisoned'
            r')?',
            True,
        ),
        'Process killed by OOM': (
            r'^Out of memory: Kill process (?P<killed_proc_pid>\d+) \((?P<killed_proc_name>[\S ]+)\) '
            r'score (?P<killed_proc_score>\d+) or sacrifice child',
            True,
        ),
        'Details of process killed by OOM': (
            r'^Killed process \d+ \(.*\)'
            r'(, UID \d+,)?'
            r' total-vm:(?P<killed_proc_total_vm_kb>\d+)kB, anon-rss:(?P<killed_proc_anon_rss_kb>\d+)kB, '
            r'file-rss:(?P<killed_proc_file_rss_kb>\d+)kB, shmem-rss:(?P<killed_proc_shmem_rss_kb>\d+)kB.*',
            True,
        ),
    }
    """
    RE pattern to extract information from OOM.
    
    The first item is the RE pattern and the second is whether it is mandatory to find this pattern.
    
    :type: dict(tuple(str, bool))
    """

    GFP_FLAGS = {
        'GFP_ATOMIC':           {'value': '__GFP_HIGH | __GFP_ATOMIC | __GFP_KSWAPD_RECLAIM'},
        'GFP_KERNEL':           {'value': '__GFP_RECLAIM | __GFP_IO | __GFP_FS'},


@@ 212,6 317,11 @@ class BaseKernelConfig:
                      'oom_score_adj']
    """Elements of the process table"""

    REC_PROCESS_LINE = re.compile(
        r'^\[(?P<pid>[ \d]+)\]\s+(?P<uid>\d+)\s+(?P<tgid>\d+)\s+(?P<total_vm_pages>\d+)\s+(?P<rss_pages>\d+)\s+'
        r'(?P<nr_ptes_pages>\d+)\s+(?P<swapents_pages>\d+)\s+(?P<oom_score_adj>-?\d+)\s+(?P<name>.+)\s*')
    """Match content of process table"""

    rec_version4kconfig = re.compile('.+')
    """RE to match kernel version to kernel configuration"""



@@ 478,115 588,6 @@ class OOMResult:
class OOMAnalyser:
    """Analyse an OOM object and calculate additional values"""

    EXTRACT_PATTERN = {
        'invoked oom-killer': (
            r'^(?P<trigger_proc_name>[\S ]+) invoked oom-killer: '
            r'gfp_mask=(?P<trigger_proc_gfp_mask>0x[a-z0-9]+)(\((?P<trigger_proc_gfp_flags>[A-Z_|]+)\))?, '
            r'(nodemask=(?P<trigger_proc_nodemask>([\d,-]+|\(null\))), )?'
            r'order=(?P<trigger_proc_order>-?\d+), '
            r'oom_score_adj=(?P<trigger_proc_oomscore>\d+)',
            True,
        ),
        'Trigger process and kernel version': (
            r'^CPU: \d+ PID: (?P<trigger_proc_pid>\d+) '
            r'Comm: .* (Not tainted|Tainted:.*) '
            r'(?P<kernel_version>\d[\w.-]+) #\d',
            True,
        ),

        # split caused by a limited number of iterations during converting PY regex into JS regex
        'Mem-Info (part 1)': (
            r'^Mem-Info:.*'
            r'(?:\n)'

            # first line (starting w/o a space)
            r'^active_anon:(?P<active_anon_pages>\d+) inactive_anon:(?P<inactive_anon_pages>\d+) '
            r'isolated_anon:(?P<isolated_anon_pages>\d+)'
            r'(?:\n)'

            # remaining lines (w/ leading space)
            r'^ active_file:(?P<active_file_pages>\d+) inactive_file:(?P<inactive_file_pages>\d+) '
            r'isolated_file:(?P<isolated_file_pages>\d+)'
            r'(?:\n)'

            r'^ unevictable:(?P<unevictable_pages>\d+) dirty:(?P<dirty_pages>\d+) writeback:(?P<writeback_pages>\d+) '
            r'unstable:(?P<unstable_pages>\d+)',
            True,
        ),
        'Mem-Info (part 2)': (
            r'^ slab_reclaimable:(?P<slab_reclaimable_pages>\d+) slab_unreclaimable:(?P<slab_unreclaimable_pages>\d+)'
            r'(?:\n)'
            r'^ mapped:(?P<mapped_pages>\d+) shmem:(?P<shmem_pages>\d+) pagetables:(?P<pagetables_pages>\d+) '
            r'bounce:(?P<bounce_pages>\d+)'
            r'(?:\n)'
            r'^ free:(?P<free_pages>\d+) free_pcp:(?P<free_pcp_pages>\d+) free_cma:(?P<free_cma_pages>\d+)',
            True,
        ),
        'Memory node information': (
             r'(^Node \d+ (DMA|Normal|hugepages).*(:?\n))+',
            False,
        ),
        'Page cache': (
            r'^(?P<pagecache_total_pages>\d+) total pagecache pages.*$',
            True,
        ),
        'Swap usage information': (
            r'^(?P<swap_cache_pages>\d+) pages in swap cache'
            r'(?:\n)'
            r'^Swap cache stats: add \d+, delete \d+, find \d+\/\d+'
            r'(?:\n)'
            r'^Free swap  = (?P<swap_free_kb>\d+)kB'
            r'(?:\n)'
            r'^Total swap = (?P<swap_total_kb>\d+)kB',
            False,
        ),
        'Page information': (
            r'^(?P<ram_pages>\d+) pages RAM'
            r'('
            r'(?:\n)'
            r'^(?P<highmem_pages>\d+) pages HighMem/MovableOnly'
            r')?'
            r'(?:\n)'
            r'^(?P<reserved_pages>\d+) pages reserved'
            r'('
            r'(?:\n)'
            r'^(?P<cma_pages>\d+) pages cma reserved'
            r')?'
            r'('
            r'(?:\n)'
            r'^(?P<pagetablecache_pages>\d+) pages in pagetable cache'
            r')?'
            r'('
            r'(?:\n)'
            r'^(?P<hwpoisoned_pages>\d+) pages hwpoisoned'
            r')?',
            True,
        ),
        'Process killed by OOM': (
            r'^Out of memory: Kill process (?P<killed_proc_pid>\d+) \((?P<killed_proc_name>[\S ]+)\) '
            r'score (?P<killed_proc_score>\d+) or sacrifice child',
            True,
        ),
        'Details of process killed by OOM': (
            r'^Killed process \d+ \(.*\)'
            r'(, UID \d+,)?'
            r' total-vm:(?P<killed_proc_total_vm_kb>\d+)kB, anon-rss:(?P<killed_proc_anon_rss_kb>\d+)kB, '
            r'file-rss:(?P<killed_proc_file_rss_kb>\d+)kB, shmem-rss:(?P<killed_proc_shmem_rss_kb>\d+)kB.*',
            True,
        ),
    }
    """
    RE pattern to extract information from OOM.
    
    The first item is the RE pattern and the second is whether it is mandatory to find this pattern.
    
    :type: dict(tuple(str, bool))
    """

    REC_PROCESS_LINE = re.compile(
        r'^\[(?P<pid>[ \d]+)\]\s+(?P<uid>\d+)\s+(?P<tgid>\d+)\s+(?P<total_vm_pages>\d+)\s+(?P<rss_pages>\d+)\s+'
        r'(?P<nr_ptes_pages>\d+)\s+(?P<swapents_pages>\d+)\s+(?P<oom_score_adj>-?\d+)\s+(?P<name>.+)\s*')

    oom_entity = None
    """
    State of this OOM (unknown, incomplete, ...)


@@ 594,7 595,7 @@ class OOMAnalyser:
    :type: OOMEntityState
    """

    oom_result = None
    oom_result = OOMResult()
    """
    Store details of OOM analysis
    


@@ 696,8 697,8 @@ class OOMAnalyser:

        self.oom_result.details = {}
        # __pragma__ ('jsiter')
        for k in self.EXTRACT_PATTERN:
            pattern, is_mandatory = self.EXTRACT_PATTERN[k]
        for k in self.oom_result.kconfig.EXTRACT_PATTERN:
            pattern, is_mandatory = self.oom_result.kconfig.EXTRACT_PATTERN[k]
            rec = re.compile(pattern, re.MULTILINE)
            match = rec.search(self.oom_entity.text)
            if match:


@@ 731,7 732,7 @@ class OOMAnalyser:
                break
            if line.startswith('[ pid ]'):
                continue
            match = self.REC_PROCESS_LINE.match(line)
            match = self.oom_result.kconfig.REC_PROCESS_LINE.match(line)
            if match:
                details = match.groupdict()
                details['notes'] = ''

M test.py => test.py +2 -2
@@ 340,7 340,7 @@ class TestPython(TestBase):
    def test_001_trigger_proc_space(self):
        """Test RE to find name of trigger process"""
        first = self.get_first_line(OOMAnalyser.OOMDisplay.example)
        pattern = OOMAnalyser.OOMAnalyser.EXTRACT_PATTERN['invoked oom-killer'][0]
        pattern = OOMAnalyser.OOMAnalyser.oom_result.kconfig.EXTRACT_PATTERN['invoked oom-killer'][0]
        rec = re.compile(pattern, re.MULTILINE)
        match = rec.search(first)
        self.assertTrue(match, "Error: re.search('invoked oom-killer') failed for simple process name")


@@ 352,7 352,7 @@ class TestPython(TestBase):
    def test_002_killed_proc_space(self):
        """Test RE to find name of killed process"""
        last = self.get_last_line(OOMAnalyser.OOMDisplay.example)
        pattern = OOMAnalyser.OOMAnalyser.EXTRACT_PATTERN['Process killed by OOM'][0]
        pattern = OOMAnalyser.OOMAnalyser.oom_result.kconfig.EXTRACT_PATTERN['Process killed by OOM'][0]
        rec = re.compile(pattern, re.MULTILINE)
        match = rec.search(last)
        self.assertTrue(match, "Error: re.search('Process killed by OOM') failed for simple process name")