Examples with DiskStats com.emc.vipr.model.sys.healthmonitor.DiskStats used on opensource projects

Example 1 with DiskStats

use of com.emc.vipr.model.sys.healthmonitor.DiskStats in project coprhd-controller by CoprHD.

the class ProcStats method getDiskStats.

/**
 * Reads the /proc/diskstats data and builds a map using the desired counters.
 *
 * @return Map with disk id as key.
 */
public static Map<String, DiskStats> getDiskStats() throws IOException, SyssvcInternalException {
    Map<String, DiskStats> diskStatsMap = new HashMap<String, DiskStats>();
    String[] fileData = FileReadUtil.readLines(DISK_STATS);
    for (String line : fileData) {
        String[] diskStatArray = line.trim().split(SPACE_VALUE);
        if (!ACCEPTABLE_DISK_IDS.contains(diskStatArray[2])) {
            continue;
        }
        // verify if disk stats array has 13 elements
        if (diskStatArray.length < 13) {
            throw SyssvcException.syssvcExceptions.syssvcInternalError("Disk stats file is invalid.");
        }
        DiskStats diskStats = new DiskStats(diskStatArray[2], Long.parseLong(diskStatArray[3]), Long.parseLong(diskStatArray[5]), Long.parseLong(diskStatArray[6]), Long.parseLong(diskStatArray[7]), Long.parseLong(diskStatArray[9]), Long.parseLong(diskStatArray[10]), Long.parseLong(diskStatArray[12]));
        diskStatsMap.put(diskStats.getDiskId(), diskStats);
    }
    return diskStatsMap;
}

Example 2 with DiskStats

use of com.emc.vipr.model.sys.healthmonitor.DiskStats in project coprhd-controller by CoprHD.

the class NodeStatsExtractor method getDiskStats.

/**
 * Get /proc/diskstats data. If "interval" value is > 0 this will get stats again
 * after sleep for interval seconds.
 *
 * @param intervalInSecs interval value in seconds
 * @return List of disk stats
 */
public static List<DiskStats> getDiskStats(int intervalInSecs) {
    // Getting disk/cpu stats
    try {
        Map<String, DiskStats> oldDiskDataMap = ProcStats.getDiskStats();
        CPUStats oldCPUStats = ProcStats.getCPUStats();
        // sleep if needed
        Map<String, DiskStats> newDiskDataMap = null;
        CPUStats newCPUStats = null;
        if (intervalInSecs > 0) {
            try {
                Thread.sleep(intervalInSecs * 1000);
            } catch (InterruptedException e) {
                _log.error("Thread Sleep InterrupdtedExcepion: {}", e);
                return null;
            }
            // Getting disk/cpu stats after sleep
            newDiskDataMap = ProcStats.getDiskStats();
            newCPUStats = ProcStats.getCPUStats();
        }
        // perform method that will actually perform the calucations.
        return getDifferentialDiskStats(oldDiskDataMap, newDiskDataMap, getCPUTimeDeltaMS(oldCPUStats, newCPUStats));
    } catch (Exception e) {
        _log.error("Error occurred while getting disk stats: {}", e);
    }
    return null;
}

Example 3 with DiskStats

use of com.emc.vipr.model.sys.healthmonitor.DiskStats in project coprhd-controller by CoprHD.

the class NodeStatsExtractor method getDifferentialDiskStats.

/**
 * This methods does the work of calculating the diskstats.
 * calculated values: read/sec, write/sec, read_sec/sec, write_sec/sec
 * avg_wait, svc_time, %util.
 *
 * @param oldDiskDataMap disk data values collected during initial run
 * @param newDiskDataMap disk data values collected after 2s
 */
private static List<DiskStats> getDifferentialDiskStats(Map<String, DiskStats> oldDiskDataMap, Map<String, DiskStats> newDiskDataMap, double deltaMS) {
    List<DiskStats> diskStatsList = new ArrayList<DiskStats>();
    // iterate though initial map as driver for getting data from the
    // compare map and determining the average per second;
    DecimalFormat decimalFormat = new DecimalFormat("#####0.00");
    for (Map.Entry<String, DiskStats> entry : oldDiskDataMap.entrySet()) {
        String diskId = entry.getKey();
        DiskStats oldStats = entry.getValue();
        DiskStats newStats = null;
        if (newDiskDataMap != null && newDiskDataMap.get(diskId) != null) {
            newStats = newDiskDataMap.get(diskId);
        }
        DiskStats diffStats = getDifference(oldStats, newStats);
        // number of requests
        double numOfIOs = diffStats.getNumberOfReads() + diffStats.getNumberOfWrites();
        // await
        double wait = numOfIOs > 0 ? (diffStats.getReadTicks() + diffStats.getWriteTicks()) / numOfIOs : 0;
        // svctm
        double svcTime = numOfIOs > 0 ? diffStats.getNumberOfIOInMs() / numOfIOs : 0;
        // %util
        double busy = 0;
        if (deltaMS > 0) {
            busy = 100 * diffStats.getNumberOfIOInMs() / deltaMS;
            busy = busy > 100 ? 100 : busy;
        }
        diskStatsList.add(new DiskStats(diskId, Double.parseDouble(decimalFormat.format(getRate(diffStats.getNumberOfReads(), deltaMS))), Double.parseDouble(decimalFormat.format(getRate(diffStats.getSectorsRead(), deltaMS))), Double.parseDouble(decimalFormat.format(getRate(diffStats.getNumberOfWrites(), deltaMS))), Double.parseDouble(decimalFormat.format(getRate(diffStats.getSectorsWrite(), deltaMS))), Double.parseDouble(decimalFormat.format(wait)), Double.parseDouble(decimalFormat.format(svcTime)), Double.parseDouble(decimalFormat.format(busy))));
    }
    return diskStatsList;
}

Example 4 with DiskStats

use of com.emc.vipr.model.sys.healthmonitor.DiskStats in project coprhd-controller by CoprHD.

the class HealthMonitorServiceTest method verifyNodeStats.

private void verifyNodeStats(NodeStats nodeStats) {
    Assert.assertTrue(nodeStats.getDiskStatsList() != null && !nodeStats.getDiskStatsList().isEmpty());
    Assert.assertTrue(nodeStats.getServiceStatsList() != null && !nodeStats.getServiceStatsList().isEmpty());
    // service stats
    for (ServiceStats serviceStats : nodeStats.getServiceStatsList()) {
        Assert.assertTrue(serviceStats.getServiceName() != null && !serviceStats.getServiceName().isEmpty());
        Assert.assertNotNull(serviceStats.getCommand());
        Assert.assertTrue(serviceStats.getFileDescriptors() >= 0);
        Assert.assertNotNull(serviceStats.getProcessStatus());
        Assert.assertNotNull(serviceStats.getProcessStatus().getStartTime());
        Assert.assertNotNull(serviceStats.getProcessStatus().getUpTime());
        Assert.assertTrue(serviceStats.getProcessStatus().getNumberOfThreads() >= 0);
        Assert.assertTrue(serviceStats.getProcessStatus().getResidentMem() >= 0);
        Assert.assertTrue(serviceStats.getProcessStatus().getVirtualMemSizeInBytes() >= 0);
    }
    // Node stats
    Assert.assertEquals(NODE_ID, nodeStats.getNodeId());
    Assert.assertEquals(NODE_NAME, nodeStats.getNodeName());
    Assert.assertEquals(NODE_IP, nodeStats.getIp());
    Assert.assertNotNull(nodeStats.getMemoryStats());
    Assert.assertNotNull(nodeStats.getMemoryStats().getMemFree());
    Assert.assertNotNull(nodeStats.getMemoryStats().getMemBuffers());
    Assert.assertNotNull(nodeStats.getMemoryStats().getMemTotal());
    Assert.assertNotNull(nodeStats.getLoadAvgStats());
    Assert.assertTrue(nodeStats.getLoadAvgStats().getLoadAvgTasksPastFifteenMinutes() >= 0);
    Assert.assertTrue(nodeStats.getLoadAvgStats().getLoadAvgTasksPastFiveMinutes() >= 0);
    Assert.assertTrue(nodeStats.getLoadAvgStats().getLoadAvgTasksPastMinute() >= 0);
    // disk stats
    for (DiskStats diskStats : nodeStats.getDiskStatsList()) {
        Assert.assertNotNull(diskStats.getDiskId());
        Assert.assertTrue(diskStats.getSectorsReadPerSec() >= 0);
        Assert.assertTrue(diskStats.getSectorsWritePerSec() >= 0);
        Assert.assertTrue(diskStats.getReadPerSec() >= 0);
        Assert.assertTrue(diskStats.getWritePerSec() >= 0);
        Assert.assertTrue(diskStats.getUtilPerc() >= 0);
        Assert.assertTrue(diskStats.getAvgSvcTime() >= 0);
        Assert.assertTrue(diskStats.getAvgWait() >= 0);
    }
    // Test service list order
    Assert.assertEquals(AVAILABLE_SERVICES.get(0), nodeStats.getServiceStatsList().get(0).getServiceName());
}

Example 5 with DiskStats

use of com.emc.vipr.model.sys.healthmonitor.DiskStats in project coprhd-controller by CoprHD.

the class HealthMonitorServiceTest method testNodeStatsWithNoAvailableServices.

@Test
public void testNodeStatsWithNoAvailableServices() {
    NodeStats nodeStats = getNodeStats(NODE_ID, NODE_NAME, NODE_IP, 0, null);
    Assert.assertTrue(nodeStats.getDiskStatsList() != null && !nodeStats.getDiskStatsList().isEmpty());
    Assert.assertTrue(nodeStats.getServiceStatsList() != null && !nodeStats.getServiceStatsList().isEmpty());
    // service stats
    for (ServiceStats serviceStats : nodeStats.getServiceStatsList()) {
        Assert.assertTrue(serviceStats.getServiceName() != null && !serviceStats.getServiceName().isEmpty());
    }
    // Node stats
    Assert.assertEquals(NODE_ID, nodeStats.getNodeId());
    Assert.assertEquals(NODE_NAME, nodeStats.getNodeName());
    Assert.assertEquals(NODE_IP, nodeStats.getIp());
    Assert.assertNotNull(nodeStats.getMemoryStats().getMemFree());
    // disk stats
    for (DiskStats diskStats : nodeStats.getDiskStatsList()) {
        Assert.assertNotNull(diskStats.getDiskId());
    }
}