Load avg constantly high

segmentation_fault · 02-13-2014, 03:24 PM

After upgrading kernel to 3.13.x I get a load avg of 1 when the system is totally idle. 3.12.7 idles at about 0.10
My pc is an acer aspire one netbook with intel atom n270 (single core - hyper threading). This happens with kernel 3.13.0 through 3.13.2
The tower pc with amd64 3500+ works fine (I mean load avg is where it is supposed to be). I have tried turning hyper threading and smp off but nothing changed. I am attaching config for kernels 3.12.7 and 3.13.2
Any ideas / suggestions?

syg00 · 02-14-2014, 02:11 AM

Run this, post the output

Code:

top -b -n 1 | awk '{if (NR <=7) print; else if ($8 == "D") {print; count++} } END {print "Total status D: "count}'

segmentation_fault · 02-17-2014, 08:46 AM

Sorry for the delay, I was out of town for the weekend. Here it is for 3.13.2

Code:

# top -b -n 1 | awk '{if (NR <=7) print; else if ($8 == "D") {print; count++} } END {print "Total status D: "count}'
top - 16:45:10 up 10 min,  2 users,  load average: 1.11, 1.01, 0.59
Tasks:  82 total,   1 running,  81 sleeping,   0 stopped,   0 zombie
%Cpu(s):  2.3 us,  0.9 sy,  0.0 ni, 94.0 id,  2.7 wa,  0.0 hi,  0.0 si,  0.0 st
KiB Mem:   1016748 total,   347216 used,   669532 free,    67184 buffers
KiB Swap:  1052252 total,        0 used,  1052252 free,   156096 cached

  PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND
 2134 root      20   0       0      0      0 D   0.0  0.0   0:00.82 kworker/0:4
Total status D: 1

i92guboj · 02-18-2014, 02:40 AM

Code:

--- 1.txt	2014-02-18 09:37:33.499195791 +0100
+++ 2.txt	2014-02-18 09:37:40.329196185 +0100
@@ -1,6 +1,6 @@
 #
 # Automatically generated file; DO NOT EDIT.
-# Linux/x86 3.12.7-gentoo Kernel Configuration
+# Linux/x86 3.13.2-gentoo Kernel Configuration
 #
 
 #
@@ -79,12 +79,8 @@
 CONFIG_SYSVIPC_SYSCTL=y
 CONFIG_POSIX_MQUEUE=y
 CONFIG_POSIX_MQUEUE_SYSCTL=y
-CONFIG_FHANDLE=y
-CONFIG_AUDIT=y
-CONFIG_AUDITSYSCALL=y
-CONFIG_AUDIT_WATCH=y
-CONFIG_AUDIT_TREE=y
-# CONFIG_AUDIT_LOGINUID_IMMUTABLE is not set
+# CONFIG_FHANDLE is not set
+# CONFIG_AUDIT is not set
 
 #
 # IRQ subsystem
@@ -121,10 +117,7 @@
 # CONFIG_IRQ_TIME_ACCOUNTING is not set
 CONFIG_BSD_PROCESS_ACCT=y
 # CONFIG_BSD_PROCESS_ACCT_V3 is not set
-CONFIG_TASKSTATS=y
-CONFIG_TASK_DELAY_ACCT=y
-CONFIG_TASK_XACCT=y
-CONFIG_TASK_IO_ACCOUNTING=y
+# CONFIG_TASKSTATS is not set
 
 #
 # RCU Subsystem
@@ -146,34 +139,26 @@
 CONFIG_ARCH_WANTS_PROT_NUMA_PROT_NONE=y
 CONFIG_CGROUPS=y
 # CONFIG_CGROUP_DEBUG is not set
-CONFIG_CGROUP_FREEZER=y
+# CONFIG_CGROUP_FREEZER is not set
 # CONFIG_CGROUP_DEVICE is not set
-CONFIG_CPUSETS=y
-CONFIG_PROC_PID_CPUSET=y
-CONFIG_CGROUP_CPUACCT=y
-CONFIG_RESOURCE_COUNTERS=y
-CONFIG_MEMCG=y
-CONFIG_MEMCG_SWAP=y
-CONFIG_MEMCG_SWAP_ENABLED=y
-CONFIG_MEMCG_KMEM=y
-# CONFIG_CGROUP_HUGETLB is not set
+# CONFIG_CPUSETS is not set
+# CONFIG_CGROUP_CPUACCT is not set
+# CONFIG_RESOURCE_COUNTERS is not set
 # CONFIG_CGROUP_PERF is not set
 CONFIG_CGROUP_SCHED=y
 CONFIG_FAIR_GROUP_SCHED=y
 # CONFIG_CFS_BANDWIDTH is not set
 # CONFIG_RT_GROUP_SCHED is not set
-CONFIG_BLK_CGROUP=y
-# CONFIG_DEBUG_BLK_CGROUP is not set
+# CONFIG_BLK_CGROUP is not set
 # CONFIG_CHECKPOINT_RESTORE is not set
 CONFIG_NAMESPACES=y
-CONFIG_UTS_NS=y
-CONFIG_IPC_NS=y
+# CONFIG_UTS_NS is not set
+# CONFIG_IPC_NS is not set
 # CONFIG_USER_NS is not set
-CONFIG_PID_NS=y
-CONFIG_NET_NS=y
+# CONFIG_PID_NS is not set
+# CONFIG_NET_NS is not set
 # CONFIG_UIDGID_STRICT_TYPE_CHECKS is not set
 CONFIG_SCHED_AUTOGROUP=y
-CONFIG_MM_OWNER=y
 # CONFIG_SYSFS_DEPRECATED is not set
 CONFIG_RELAY=y
 CONFIG_BLK_DEV_INITRD=y
@@ -220,9 +205,8 @@
 # CONFIG_SLAB is not set
 CONFIG_SLUB=y
 CONFIG_SLUB_CPU_PARTIAL=y
-CONFIG_PROFILING=y
+# CONFIG_PROFILING is not set
 CONFIG_TRACEPOINTS=y
-# CONFIG_OPROFILE is not set
 CONFIG_HAVE_OPROFILE=y
 CONFIG_OPROFILE_NMI_TIMER=y
 # CONFIG_KPROBES is not set
@@ -238,7 +222,6 @@
 CONFIG_HAVE_ARCH_TRACEHOOK=y
 CONFIG_HAVE_DMA_ATTRS=y
 CONFIG_HAVE_DMA_CONTIGUOUS=y
-CONFIG_USE_GENERIC_SMP_HELPERS=y
 CONFIG_GENERIC_SMP_IDLE_THREAD=y
 CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
 CONFIG_HAVE_DMA_API_DEBUG=y
@@ -272,10 +255,11 @@
 CONFIG_SLABINFO=y
 CONFIG_RT_MUTEXES=y
 CONFIG_BASE_SMALL=0
+# CONFIG_SYSTEM_TRUSTED_KEYRING is not set
 CONFIG_MODULES=y
-CONFIG_MODULE_FORCE_LOAD=y
+# CONFIG_MODULE_FORCE_LOAD is not set
 CONFIG_MODULE_UNLOAD=y
-CONFIG_MODULE_FORCE_UNLOAD=y
+# CONFIG_MODULE_FORCE_UNLOAD is not set
 # CONFIG_MODVERSIONS is not set
 # CONFIG_MODULE_SRCVERSION_ALL is not set
 # CONFIG_MODULE_SIG is not set
@@ -285,7 +269,6 @@
 CONFIG_BLK_DEV_BSG=y
 # CONFIG_BLK_DEV_BSGLIB is not set
 # CONFIG_BLK_DEV_INTEGRITY is not set
-# CONFIG_BLK_DEV_THROTTLING is not set
 # CONFIG_BLK_CMDLINE_PARSER is not set
 
 #
@@ -319,7 +302,6 @@
 CONFIG_IOSCHED_NOOP=y
 CONFIG_IOSCHED_DEADLINE=y
 CONFIG_IOSCHED_CFQ=y
-CONFIG_CFQ_GROUP_IOSCHED=y
 # CONFIG_DEFAULT_DEADLINE is not set
 CONFIG_DEFAULT_CFQ=y
 # CONFIG_DEFAULT_NOOP is not set
@@ -330,7 +312,7 @@
 CONFIG_INLINE_WRITE_UNLOCK=y
 CONFIG_INLINE_WRITE_UNLOCK_IRQ=y
 CONFIG_MUTEX_SPIN_ON_OWNER=y
-CONFIG_FREEZER=y
+# CONFIG_FREEZER is not set
 
 #
 # Processor type and features
@@ -491,7 +473,6 @@
 # CONFIG_PM_RUNTIME is not set
 CONFIG_ACPI=y
 CONFIG_ACPI_PROCFS=y
-CONFIG_ACPI_PROCFS_POWER=y
 # CONFIG_ACPI_EC_DEBUGFS is not set
 CONFIG_ACPI_AC=y
 CONFIG_ACPI_BATTERY=y
@@ -504,7 +485,6 @@
 CONFIG_ACPI_THERMAL=y
 # CONFIG_ACPI_CUSTOM_DSDT is not set
 CONFIG_ACPI_INITRD_TABLE_OVERRIDE=y
-CONFIG_ACPI_BLACKLIST_YEAR=0
 # CONFIG_ACPI_DEBUG is not set
 # CONFIG_ACPI_PCI_SLOT is not set
 CONFIG_X86_PM_TIMER=y
@@ -513,13 +493,13 @@
 # CONFIG_ACPI_HED is not set
 # CONFIG_ACPI_CUSTOM_METHOD is not set
 # CONFIG_ACPI_APEI is not set
+# CONFIG_ACPI_EXTLOG is not set
 # CONFIG_SFI is not set
 
 #
 # CPU Frequency scaling
 #
 CONFIG_CPU_FREQ=y
-CONFIG_CPU_FREQ_TABLE=y
 CONFIG_CPU_FREQ_GOV_COMMON=y
 # CONFIG_CPU_FREQ_STAT is not set
 # CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
@@ -731,6 +711,7 @@
 CONFIG_NF_NAT_IRC=m
 CONFIG_NF_NAT_SIP=m
 # CONFIG_NF_NAT_TFTP is not set
+# CONFIG_NF_TABLES is not set
 CONFIG_NETFILTER_XTABLES=y
 
 #
@@ -870,6 +851,7 @@
 # CONFIG_NET_CLS_RSVP6 is not set
 # CONFIG_NET_CLS_FLOW is not set
 CONFIG_NET_CLS_CGROUP=m
+# CONFIG_NET_CLS_BPF is not set
 CONFIG_NET_EMATCH=y
 CONFIG_NET_EMATCH_STACK=32
 # CONFIG_NET_EMATCH_CMP is not set
@@ -896,6 +878,7 @@
 # CONFIG_NETLINK_MMAP is not set
 # CONFIG_NETLINK_DIAG is not set
 # CONFIG_NET_MPLS_GSO is not set
+# CONFIG_HSR is not set
 CONFIG_RPS=y
 CONFIG_RFS_ACCEL=y
 CONFIG_XPS=y
@@ -972,6 +955,7 @@
 CONFIG_PROC_EVENTS=y
 # CONFIG_MTD is not set
 # CONFIG_PARPORT is not set
+CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y
 CONFIG_PNP=y
 CONFIG_PNP_DEBUG_MESSAGES=y
 
@@ -980,9 +964,9 @@
 #
 CONFIG_PNPACPI=y
 CONFIG_BLK_DEV=y
+# CONFIG_BLK_DEV_NULL_BLK is not set
 # CONFIG_BLK_DEV_FD is not set
 # CONFIG_BLK_DEV_PCIESSD_MTIP32XX is not set
-# CONFIG_BLK_CPQ_DA is not set
 # CONFIG_BLK_CPQ_CISS_DA is not set
 # CONFIG_BLK_DEV_DAC960 is not set
 # CONFIG_BLK_DEV_UMEM is not set
@@ -1057,6 +1041,14 @@
 #
 # CONFIG_ALTERA_STAPL is not set
 # CONFIG_VMWARE_VMCI is not set
+
+#
+# Intel MIC Host Driver
+#
+
+#
+# Intel MIC Card Driver
+#
 CONFIG_HAVE_IDE=y
 # CONFIG_IDE is not set
 
@@ -1386,6 +1378,7 @@
 # CONFIG_AR5523 is not set
 # CONFIG_WIL6210 is not set
 # CONFIG_ATH10K is not set
+# CONFIG_WCN36XX is not set
 # CONFIG_B43 is not set
 # CONFIG_B43LEGACY is not set
 # CONFIG_BRCMFMAC is not set
@@ -1558,7 +1551,6 @@
 # CONFIG_SERIAL_ARC is not set
 # CONFIG_SERIAL_RP2 is not set
 # CONFIG_SERIAL_FSL_LPUART is not set
-# CONFIG_SERIAL_ST_ASC is not set
 # CONFIG_IPMI_HANDLER is not set
 CONFIG_HW_RANDOM=y
 # CONFIG_HW_RANDOM_TIMERIOMEM is not set
@@ -1665,7 +1657,6 @@
 #
 # CONFIG_PTP_1588_CLOCK_PCH is not set
 CONFIG_ARCH_WANT_OPTIONAL_GPIOLIB=y
-CONFIG_GPIO_DEVRES=y
 # CONFIG_GPIOLIB is not set
 # CONFIG_W1 is not set
 CONFIG_POWER_SUPPLY=y
@@ -2021,7 +2012,7 @@
 #
 
 #
-# Miscelaneous helper chips
+# Miscellaneous helper chips
 #
 
 #
@@ -2052,6 +2043,7 @@
 # CONFIG_VGA_SWITCHEROO is not set
 CONFIG_DRM=y
 CONFIG_DRM_KMS_HELPER=y
+CONFIG_DRM_KMS_FB_HELPER=y
 CONFIG_DRM_LOAD_EDID_FIRMWARE=y
 CONFIG_DRM_TTM=y
 
@@ -2068,6 +2060,7 @@
 CONFIG_DRM_I810=y
 CONFIG_DRM_I915=y
 CONFIG_DRM_I915_KMS=y
+CONFIG_DRM_I915_FBDEV=y
 # CONFIG_DRM_I915_PRELIMINARY_HW_SUPPORT is not set
 # CONFIG_DRM_MGA is not set
 # CONFIG_DRM_SIS is not set
@@ -2164,7 +2157,7 @@
 # CONFIG_BACKLIGHT_SAHARA is not set
 # CONFIG_BACKLIGHT_ADP8860 is not set
 # CONFIG_BACKLIGHT_ADP8870 is not set
-# CONFIG_BACKLIGHT_LM3630 is not set
+# CONFIG_BACKLIGHT_LM3630A is not set
 # CONFIG_BACKLIGHT_LM3639 is not set
 # CONFIG_BACKLIGHT_LP855X is not set
 # CONFIG_BACKLIGHT_LV5207LP is not set
@@ -2526,7 +2519,6 @@
 #
 # CONFIG_USB_PHY is not set
 # CONFIG_NOP_USB_XCEIV is not set
-# CONFIG_AM335X_PHY_USB is not set
 # CONFIG_SAMSUNG_USB2PHY is not set
 # CONFIG_SAMSUNG_USB3PHY is not set
 # CONFIG_USB_ISP1301 is not set
@@ -2620,6 +2612,7 @@
 # CONFIG_LEDS_CLEVO_MAIL is not set
 # CONFIG_LEDS_PCA955X is not set
 # CONFIG_LEDS_PCA963X is not set
+# CONFIG_LEDS_PCA9685 is not set
 # CONFIG_LEDS_BD2802 is not set
 # CONFIG_LEDS_INTEL_SS4200 is not set
 # CONFIG_LEDS_TCA6507 is not set
@@ -2824,7 +2817,6 @@
 CONFIG_X86_PLATFORM_DEVICES=y
 CONFIG_ACERHDF=y
 # CONFIG_ASUS_LAPTOP is not set
-# CONFIG_CHROMEOS_LAPTOP is not set
 # CONFIG_FUJITSU_LAPTOP is not set
 # CONFIG_FUJITSU_TABLET is not set
 # CONFIG_HP_ACCEL is not set
@@ -2846,6 +2838,7 @@
 # CONFIG_INTEL_RST is not set
 # CONFIG_INTEL_SMARTCONNECT is not set
 # CONFIG_PVPANIC is not set
+# CONFIG_CHROME_PLATFORMS is not set
 
 #
 # Hardware Spinlock drivers
@@ -2878,6 +2871,13 @@
 # CONFIG_FMC is not set
 
 #
+# PHY Subsystem
+#
+# CONFIG_GENERIC_PHY is not set
+# CONFIG_PHY_EXYNOS_MIPI_VIDEO is not set
+# CONFIG_POWERCAP is not set
+
+#
 # Firmware Drivers
 #
 # CONFIG_EDD is not set
@@ -2921,7 +2921,7 @@
 # CONFIG_BTRFS_FS is not set
 # CONFIG_NILFS2_FS is not set
 CONFIG_FS_POSIX_ACL=y
-CONFIG_EXPORTFS=y
+CONFIG_EXPORTFS=m
 CONFIG_FILE_LOCKING=y
 CONFIG_FSNOTIFY=y
 CONFIG_DNOTIFY=y
@@ -3121,6 +3121,7 @@
 CONFIG_ARCH_WANT_FRAME_POINTERS=y
 # CONFIG_FRAME_POINTER is not set
 CONFIG_MAGIC_SYSRQ=y
+CONFIG_MAGIC_SYSRQ_DEFAULT_ENABLE=0x1
 # CONFIG_DEBUG_KERNEL is not set
 
 #
@@ -3221,6 +3222,8 @@
 # Security options
 #
 CONFIG_KEYS=y
+# CONFIG_PERSISTENT_KEYRINGS is not set
+# CONFIG_BIG_KEYS is not set
 # CONFIG_ENCRYPTED_KEYS is not set
 CONFIG_KEYS_DEBUG_PROC_KEYS=y
 # CONFIG_SECURITY_DMESG_RESTRICT is not set
@@ -3229,24 +3232,14 @@
 CONFIG_SECURITY_NETWORK=y
 # CONFIG_SECURITY_NETWORK_XFRM is not set
 # CONFIG_SECURITY_PATH is not set
-CONFIG_LSM_MMAP_MIN_ADDR=65536
-CONFIG_SECURITY_SELINUX=y
-CONFIG_SECURITY_SELINUX_BOOTPARAM=y
-CONFIG_SECURITY_SELINUX_BOOTPARAM_VALUE=1
-CONFIG_SECURITY_SELINUX_DISABLE=y
-CONFIG_SECURITY_SELINUX_DEVELOP=y
-CONFIG_SECURITY_SELINUX_AVC_STATS=y
-CONFIG_SECURITY_SELINUX_CHECKREQPROT_VALUE=1
-# CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX is not set
 # CONFIG_SECURITY_SMACK is not set
 # CONFIG_SECURITY_TOMOYO is not set
 # CONFIG_SECURITY_APPARMOR is not set
 # CONFIG_SECURITY_YAMA is not set
 # CONFIG_IMA is not set
 # CONFIG_EVM is not set
-CONFIG_DEFAULT_SECURITY_SELINUX=y
-# CONFIG_DEFAULT_SECURITY_DAC is not set
-CONFIG_DEFAULT_SECURITY="selinux"
+CONFIG_DEFAULT_SECURITY_DAC=y
+CONFIG_DEFAULT_SECURITY=""
 CONFIG_CRYPTO=y
 
 #
@@ -3260,7 +3253,7 @@
 CONFIG_CRYPTO_BLKCIPHER2=y
 CONFIG_CRYPTO_HASH=y
 CONFIG_CRYPTO_HASH2=y
-CONFIG_CRYPTO_RNG=m
+CONFIG_CRYPTO_RNG=y
 CONFIG_CRYPTO_RNG2=y
 CONFIG_CRYPTO_PCOMP2=y
 CONFIG_CRYPTO_MANAGER=y
@@ -3278,15 +3271,15 @@
 #
 # Authenticated Encryption with Associated Data
 #
-# CONFIG_CRYPTO_CCM is not set
+CONFIG_CRYPTO_CCM=y
 # CONFIG_CRYPTO_GCM is not set
-# CONFIG_CRYPTO_SEQIV is not set
+CONFIG_CRYPTO_SEQIV=y
 
 #
 # Block modes
 #
 CONFIG_CRYPTO_CBC=y
-# CONFIG_CRYPTO_CTR is not set
+CONFIG_CRYPTO_CTR=y
 # CONFIG_CRYPTO_CTS is not set
 CONFIG_CRYPTO_ECB=y
 # CONFIG_CRYPTO_LRW is not set
@@ -3398,7 +3391,7 @@
 # CONFIG_CRC7 is not set
 CONFIG_LIBCRC32C=y
 # CONFIG_CRC8 is not set
-CONFIG_AUDIT_GENERIC=y
+# CONFIG_RANDOM32_SELFTEST is not set
 CONFIG_ZLIB_INFLATE=y
 CONFIG_ZLIB_DEFLATE=y
 CONFIG_LZO_COMPRESS=y
@@ -3419,6 +3412,7 @@
 CONFIG_DECOMPRESS_XZ=y
 CONFIG_DECOMPRESS_LZO=y
 CONFIG_DECOMPRESS_LZ4=y
+CONFIG_ASSOCIATIVE_ARRAY=y
 CONFIG_HAS_IOMEM=y
 CONFIG_HAS_IOPORT=y
 CONFIG_HAS_DMA=y

This is the diff between them, so, I'd start investigating from here. If I were you, I'd start with the CGROUP stuff.

syg00 · 02-18-2014, 03:17 AM

Loadavg is not just "running" (i.e. CPU using) tasks - anything in state "D" (uninterruptible sleep) also contributes. If that kworker (or anything else for that matter) is always in that state, would explain your loadavg. Note no CPU usage.

On this i7 laptop running Fedora 20 I have 36 kworker threads, none in "D" - no idea if you have another issue that causes this. Basically I say ignore loadavg unless it gets *way* out of whack.

segmentation_fault · 02-18-2014, 05:38 AM

On 3.12.7 nothing is in D state, and I have no idea what is that kworker doing. Also, I have tried with the cgroup staff enabled. It made no difference. I can't say if this situation is slowing down things, I have to do some tests. The sure thing is that load doesn't go below 1 ever.
Thanks for all the responses.