hi everyone, I maintain a couple of linux servers in an academic environment. Having upgraded most of them to 2.6.10-ac12, one of them showed a linear growth of used memory over the last 7 days, after the first 2.6.10-ac12 boot. It came to a point that it started swapping and the swap usage too started to grow linearly.
Most of the userspace memory was occupied by postfix and spamassassin processes, which after killed didn't stop the memory growth, so I'm left with the feeling of a kernel memory leak. This is mostly an e-mail server: * smtp for about 300 hosts (postfix) * 6 local e-mail accounts for in-house administrators ** spamassassin for the local accounts ** courier-imap-ssl for the local accounts Running on a 2.0GHz P4 with 512Mb of ram. kernel version is 2.6.10-ac12 [1] kernel config: [2] Since this is a production machine, I can't test it very thouroughly (lots of reboots, etc), but I'd like to know more about this. I had to reboot it, so it's all normal now. If the behavior maintains, how can I infer if there is really a memory leak? What kind of tests could I perform? best regards, pedro venda. ---------------------------------------------------------------------- [1]: ver_linux output Linux admin 2.6.10-ac12 #1 Wed Feb 9 01:53:22 WET 2005 i686 Intel(R) Pentium(R) 4 CPU 2.00GHz GenuineIntel GNU/Linux Gnu C 3.3.5 Gnu make 3.80 binutils 2.15.92.0.2 util-linux 2.12i mount 2.12i module-init-tools 3.0 e2fsprogs 1.35 reiserfsprogs 3.6.19 reiser4progs line Linux C Library 2.3.4 Dynamic linker (ldd) 2.3.4 Procps 3.2.4 Net-tools 1.60 Kbd 1.12 Sh-utils 5.2.1 Modules Loaded ipt_state ip_conntrack iptable_filter ip_tables eepro100 i2c_i801 i2c_core 8139too crc32 [2]: kernel config CONFIG_X86=y CONFIG_MMU=y CONFIG_UID16=y CONFIG_GENERIC_ISA_DMA=y CONFIG_GENERIC_IOMAP=y CONFIG_EXPERIMENTAL=y CONFIG_CLEAN_COMPILE=y CONFIG_BROKEN_ON_SMP=y CONFIG_LOCALVERSION="" CONFIG_SWAP=y CONFIG_SYSVIPC=y CONFIG_POSIX_MQUEUE=y CONFIG_BSD_PROCESS_ACCT=y CONFIG_BSD_PROCESS_ACCT_V3=y CONFIG_SYSCTL=y CONFIG_AUDIT=y CONFIG_AUDITSYSCALL=y CONFIG_LOG_BUF_SHIFT=14 CONFIG_KOBJECT_UEVENT=y CONFIG_IKCONFIG=y CONFIG_IKCONFIG_PROC=y CONFIG_KALLSYMS=y CONFIG_FUTEX=y CONFIG_EPOLL=y CONFIG_SHMEM=y CONFIG_CC_ALIGN_FUNCTIONS=0 CONFIG_CC_ALIGN_LABELS=0 CONFIG_CC_ALIGN_LOOPS=0 CONFIG_CC_ALIGN_JUMPS=0 CONFIG_MODULES=y CONFIG_MODULE_UNLOAD=y CONFIG_MODULE_FORCE_UNLOAD=y CONFIG_OBSOLETE_MODPARM=y CONFIG_KMOD=y CONFIG_X86_PC=y CONFIG_MPENTIUM4=y CONFIG_X86_HZ=1000 CONFIG_X86_GENERIC=y CONFIG_X86_CMPXCHG=y CONFIG_X86_XADD=y CONFIG_X86_L1_CACHE_SHIFT=7 CONFIG_RWSEM_XCHGADD_ALGORITHM=y CONFIG_X86_WP_WORKS_OK=y CONFIG_X86_INVLPG=y CONFIG_X86_BSWAP=y CONFIG_X86_POPAD_OK=y CONFIG_X86_GOOD_APIC=y CONFIG_X86_INTEL_USERCOPY=y CONFIG_X86_USE_PPRO_CHECKSUM=y CONFIG_HPET_TIMER=y CONFIG_X86_TSC=y CONFIG_X86_MCE=y CONFIG_X86_MCE_NONFATAL=m CONFIG_MICROCODE=m CONFIG_X86_MSR=m CONFIG_X86_CPUID=m CONFIG_NOHIGHMEM=y CONFIG_MTRR=y CONFIG_PM=y CONFIG_ACPI=y CONFIG_ACPI_BOOT=y CONFIG_ACPI_INTERPRETER=y CONFIG_ACPI_AC=m CONFIG_ACPI_BATTERY=m CONFIG_ACPI_BUTTON=m CONFIG_ACPI_VIDEO=m CONFIG_ACPI_FAN=m CONFIG_ACPI_PROCESSOR=m CONFIG_ACPI_THERMAL=m CONFIG_ACPI_IBM=m CONFIG_ACPI_BLACKLIST_YEAR=0 CONFIG_ACPI_BUS=y CONFIG_ACPI_EC=y CONFIG_ACPI_POWER=y CONFIG_ACPI_PCI=y CONFIG_ACPI_SYSTEM=y CONFIG_APM=m CONFIG_APM_DO_ENABLE=y CONFIG_APM_CPU_IDLE=y CONFIG_APM_DISPLAY_BLANK=y CONFIG_CPU_FREQ=y CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y CONFIG_CPU_FREQ_GOV_PERFORMANCE=y CONFIG_CPU_FREQ_GOV_POWERSAVE=m CONFIG_CPU_FREQ_GOV_USERSPACE=m CONFIG_CPU_FREQ_TABLE=y CONFIG_X86_ACPI_CPUFREQ=m CONFIG_X86_P4_CLOCKMOD=m CONFIG_X86_SPEEDSTEP_LIB=m CONFIG_PCI=y CONFIG_PCI_GOANY=y CONFIG_PCI_BIOS=y CONFIG_PCI_DIRECT=y CONFIG_PCI_MMCONFIG=y CONFIG_PCI_LEGACY_PROC=y CONFIG_PCI_NAMES=y CONFIG_ISA=y CONFIG_BINFMT_ELF=y CONFIG_BINFMT_AOUT=m CONFIG_BINFMT_MISC=m CONFIG_STANDALONE=y CONFIG_PREVENT_FIRMWARE_BUILD=y CONFIG_PARPORT=y CONFIG_PARPORT_PC=y CONFIG_PARPORT_PC_CML1=y CONFIG_PARPORT_PC_FIFO=y CONFIG_PARPORT_PC_SUPERIO=y CONFIG_PARPORT_OTHER=y CONFIG_PARPORT_1284=y CONFIG_PNP=y CONFIG_ISAPNP=y CONFIG_PNPBIOS=y CONFIG_PNPBIOS_PROC_FS=y CONFIG_PNPACPI=y CONFIG_BLK_DEV_FD=y CONFIG_BLK_DEV_LOOP=m CONFIG_BLK_DEV_CRYPTOLOOP=m CONFIG_BLK_DEV_RAM_COUNT=16 CONFIG_INITRAMFS_SOURCE="" CONFIG_IOSCHED_NOOP=y CONFIG_IOSCHED_AS=y CONFIG_IOSCHED_DEADLINE=y CONFIG_IOSCHED_CFQ=y CONFIG_IDE=y CONFIG_BLK_DEV_IDE=y CONFIG_BLK_DEV_IDEDISK=y CONFIG_BLK_DEV_IDECD=y CONFIG_IDE_TASK_IOCTL=y CONFIG_IDE_GENERIC=y CONFIG_BLK_DEV_IDEPCI=y CONFIG_IDEPCI_SHARE_IRQ=y CONFIG_BLK_DEV_GENERIC=y CONFIG_BLK_DEV_IDEDMA_PCI=y CONFIG_IDEDMA_PCI_AUTO=y CONFIG_BLK_DEV_PIIX=y CONFIG_BLK_DEV_IDEDMA=y CONFIG_IDEDMA_AUTO=y CONFIG_SCSI=y CONFIG_SCSI_QLA2XXX=y CONFIG_MD=y CONFIG_BLK_DEV_MD=y CONFIG_MD_RAID1=y CONFIG_IEEE1394=m CONFIG_IEEE1394_EXTRA_CONFIG_ROMS=y CONFIG_IEEE1394_CONFIG_ROM_IP1394=y CONFIG_IEEE1394_OHCI1394=m CONFIG_IEEE1394_VIDEO1394=m CONFIG_IEEE1394_SBP2=m CONFIG_IEEE1394_ETH1394=m CONFIG_IEEE1394_DV1394=m CONFIG_IEEE1394_RAWIO=m CONFIG_IEEE1394_CMP=m CONFIG_NET=y CONFIG_PACKET=y CONFIG_PACKET_MMAP=y CONFIG_UNIX=y CONFIG_NET_KEY=y CONFIG_INET=y CONFIG_IP_MULTICAST=y CONFIG_INET_AH=m CONFIG_INET_ESP=m CONFIG_INET_IPCOMP=m CONFIG_INET_TUNNEL=m CONFIG_IP_TCPDIAG=y CONFIG_IP_TCPDIAG_IPV6=y CONFIG_IPV6=y CONFIG_IPV6_PRIVACY=y CONFIG_INET6_AH=y CONFIG_INET6_ESP=y CONFIG_INET6_IPCOMP=y CONFIG_INET6_TUNNEL=y CONFIG_IPV6_TUNNEL=y CONFIG_NETFILTER=y CONFIG_IP_NF_CONNTRACK=m CONFIG_IP_NF_FTP=m CONFIG_IP_NF_IRC=m CONFIG_IP_NF_TFTP=m CONFIG_IP_NF_AMANDA=m CONFIG_IP_NF_QUEUE=m CONFIG_IP_NF_IPTABLES=m CONFIG_IP_NF_MATCH_LIMIT=m CONFIG_IP_NF_MATCH_IPRANGE=m CONFIG_IP_NF_MATCH_MAC=m CONFIG_IP_NF_MATCH_PKTTYPE=m CONFIG_IP_NF_MATCH_MARK=m CONFIG_IP_NF_MATCH_MULTIPORT=m CONFIG_IP_NF_MATCH_TOS=m CONFIG_IP_NF_MATCH_RECENT=m CONFIG_IP_NF_MATCH_ECN=m CONFIG_IP_NF_MATCH_DSCP=m CONFIG_IP_NF_MATCH_AH_ESP=m CONFIG_IP_NF_MATCH_LENGTH=m CONFIG_IP_NF_MATCH_TTL=m CONFIG_IP_NF_MATCH_TCPMSS=m CONFIG_IP_NF_MATCH_HELPER=m CONFIG_IP_NF_MATCH_STATE=m CONFIG_IP_NF_MATCH_CONNTRACK=m CONFIG_IP_NF_MATCH_OWNER=m CONFIG_IP_NF_MATCH_ADDRTYPE=m CONFIG_IP_NF_MATCH_REALM=m CONFIG_IP_NF_FILTER=m CONFIG_IP_NF_TARGET_REJECT=m CONFIG_IP_NF_TARGET_LOG=m CONFIG_IP_NF_TARGET_ULOG=m CONFIG_IP_NF_TARGET_TCPMSS=m CONFIG_IP_NF_NAT=m CONFIG_IP_NF_NAT_NEEDED=y CONFIG_IP_NF_TARGET_MASQUERADE=m CONFIG_IP_NF_TARGET_REDIRECT=m CONFIG_IP_NF_TARGET_NETMAP=m CONFIG_IP_NF_TARGET_SAME=m CONFIG_IP_NF_NAT_LOCAL=y CONFIG_IP_NF_NAT_SNMP_BASIC=m CONFIG_IP_NF_NAT_IRC=m CONFIG_IP_NF_NAT_FTP=m CONFIG_IP_NF_NAT_TFTP=m CONFIG_IP_NF_NAT_AMANDA=m CONFIG_IP_NF_MANGLE=m CONFIG_IP_NF_TARGET_TOS=m CONFIG_IP_NF_TARGET_ECN=m CONFIG_IP_NF_TARGET_DSCP=m CONFIG_IP_NF_TARGET_MARK=m CONFIG_IP_NF_TARGET_CLASSIFY=m CONFIG_IP_NF_RAW=m CONFIG_IP_NF_TARGET_NOTRACK=m CONFIG_IP_NF_ARPTABLES=y CONFIG_IP_NF_ARPFILTER=y CONFIG_IP_NF_ARP_MANGLE=y CONFIG_IP6_NF_QUEUE=m CONFIG_IP6_NF_IPTABLES=m CONFIG_IP6_NF_MATCH_LIMIT=m CONFIG_IP6_NF_MATCH_MAC=m CONFIG_IP6_NF_MATCH_RT=m CONFIG_IP6_NF_MATCH_OPTS=m CONFIG_IP6_NF_MATCH_FRAG=m CONFIG_IP6_NF_MATCH_HL=m CONFIG_IP6_NF_MATCH_MULTIPORT=m CONFIG_IP6_NF_MATCH_OWNER=m CONFIG_IP6_NF_MATCH_MARK=m CONFIG_IP6_NF_MATCH_IPV6HEADER=m CONFIG_IP6_NF_MATCH_AHESP=m CONFIG_IP6_NF_MATCH_LENGTH=m CONFIG_IP6_NF_MATCH_EUI64=m CONFIG_IP6_NF_FILTER=m CONFIG_IP6_NF_TARGET_LOG=m CONFIG_IP6_NF_MANGLE=m CONFIG_IP6_NF_TARGET_MARK=m CONFIG_IP6_NF_RAW=m CONFIG_XFRM=y CONFIG_NET_CLS_ROUTE=y CONFIG_NETDEVICES=y CONFIG_DUMMY=m CONFIG_NET_ETHERNET=y CONFIG_MII=y CONFIG_NET_VENDOR_3COM=y CONFIG_EL3=m CONFIG_VORTEX=m CONFIG_NET_TULIP=y CONFIG_DE2104X=m CONFIG_TULIP=m CONFIG_DE4X5=m CONFIG_WINBOND_840=m CONFIG_DM9102=m CONFIG_NET_PCI=y CONFIG_EEPRO100=m CONFIG_8139CP=m CONFIG_8139TOO=m CONFIG_8139TOO_PIO=y CONFIG_8139TOO_TUNE_TWISTER=y CONFIG_8139TOO_8129=y CONFIG_INPUT=y CONFIG_INPUT_MOUSEDEV=y CONFIG_INPUT_MOUSEDEV_PSAUX=y CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024 CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768 CONFIG_SOUND_GAMEPORT=y CONFIG_SERIO=y CONFIG_SERIO_I8042=y CONFIG_INPUT_KEYBOARD=y CONFIG_KEYBOARD_ATKBD=y CONFIG_INPUT_MOUSE=y CONFIG_MOUSE_PS2=y CONFIG_VT=y CONFIG_VT_CONSOLE=y CONFIG_HW_CONSOLE=y CONFIG_SERIAL_8250=y CONFIG_SERIAL_8250_CONSOLE=y CONFIG_SERIAL_8250_ACPI=y CONFIG_SERIAL_8250_NR_UARTS=4 CONFIG_SERIAL_CORE=y CONFIG_SERIAL_CORE_CONSOLE=y CONFIG_UNIX98_PTYS=y CONFIG_LEGACY_PTYS=y CONFIG_LEGACY_PTY_COUNT=256 CONFIG_PRINTER=y CONFIG_HW_RANDOM=y CONFIG_NVRAM=y CONFIG_RTC=y CONFIG_HPET=y CONFIG_HPET_RTC_IRQ=y CONFIG_HPET_MMAP=y CONFIG_HANGCHECK_TIMER=y CONFIG_I2C=m CONFIG_I2C_CHARDEV=m CONFIG_I2C_ALGOBIT=m CONFIG_I2C_ALGOPCF=m CONFIG_I2C_ALI1535=m CONFIG_I2C_ALI1563=m CONFIG_I2C_ALI15X3=m CONFIG_I2C_AMD756=m CONFIG_I2C_AMD8111=m CONFIG_I2C_ELEKTOR=m CONFIG_I2C_I801=m CONFIG_I2C_I810=m CONFIG_I2C_ISA=m CONFIG_I2C_NFORCE2=m CONFIG_I2C_PARPORT=m CONFIG_I2C_PARPORT_LIGHT=m CONFIG_I2C_PIIX4=m CONFIG_I2C_PROSAVAGE=m CONFIG_I2C_SAVAGE4=m CONFIG_SCx200_ACB=m CONFIG_I2C_SIS5595=m CONFIG_I2C_SIS630=m CONFIG_I2C_SIS96X=m CONFIG_I2C_VIA=m CONFIG_I2C_VIAPRO=m CONFIG_I2C_VOODOO3=m CONFIG_I2C_SENSOR=m CONFIG_SENSORS_ADM1021=m CONFIG_SENSORS_ADM1025=m CONFIG_SENSORS_ADM1031=m CONFIG_SENSORS_ASB100=m CONFIG_SENSORS_DS1621=m CONFIG_SENSORS_FSCHER=m CONFIG_SENSORS_GL518SM=m CONFIG_SENSORS_IT87=m CONFIG_SENSORS_LM75=m CONFIG_SENSORS_LM77=m CONFIG_SENSORS_LM78=m CONFIG_SENSORS_LM80=m CONFIG_SENSORS_LM83=m CONFIG_SENSORS_LM85=m CONFIG_SENSORS_LM90=m CONFIG_SENSORS_MAX1619=m CONFIG_SENSORS_VIA686A=m CONFIG_SENSORS_W83781D=m CONFIG_SENSORS_W83L785TS=m CONFIG_SENSORS_W83627HF=m CONFIG_FB=y CONFIG_FB_VESA=y CONFIG_VGA_CONSOLE=y CONFIG_DUMMY_CONSOLE=y CONFIG_LOGO=y CONFIG_LOGO_LINUX_MONO=y CONFIG_LOGO_LINUX_VGA16=y CONFIG_LOGO_LINUX_CLUT224=y CONFIG_USB_ARCH_HAS_HCD=y CONFIG_USB_ARCH_HAS_OHCI=y CONFIG_EXT2_FS=y CONFIG_EXT2_FS_XATTR=y CONFIG_EXT2_FS_POSIX_ACL=y CONFIG_EXT2_FS_SECURITY=y CONFIG_EXT3_FS=y CONFIG_EXT3_FS_XATTR=y CONFIG_EXT3_FS_POSIX_ACL=y CONFIG_EXT3_FS_SECURITY=y CONFIG_JBD=y CONFIG_FS_MBCACHE=y CONFIG_REISERFS_FS=y CONFIG_REISERFS_PROC_INFO=y CONFIG_REISERFS_FS_XATTR=y CONFIG_REISERFS_FS_POSIX_ACL=y CONFIG_REISERFS_FS_SECURITY=y CONFIG_FS_POSIX_ACL=y CONFIG_QUOTA=y CONFIG_QFMT_V1=m CONFIG_QFMT_V2=m CONFIG_QUOTACTL=y CONFIG_DNOTIFY=y CONFIG_AUTOFS4_FS=y CONFIG_ISO9660_FS=y CONFIG_JOLIET=y CONFIG_ZISOFS=y CONFIG_ZISOFS_FS=y CONFIG_UDF_FS=y CONFIG_UDF_NLS=y CONFIG_FAT_FS=y CONFIG_MSDOS_FS=y CONFIG_VFAT_FS=y CONFIG_FAT_DEFAULT_CODEPAGE=860 CONFIG_FAT_DEFAULT_IOCHARSET="iso8859-15" CONFIG_NTFS_FS=y CONFIG_PROC_FS=y CONFIG_PROC_KCORE=y CONFIG_SYSFS=y CONFIG_DEVFS_FS=y CONFIG_DEVFS_MOUNT=y CONFIG_DEVPTS_FS_XATTR=y CONFIG_DEVPTS_FS_SECURITY=y CONFIG_TMPFS=y CONFIG_RAMFS=y CONFIG_SMB_FS=m CONFIG_MSDOS_PARTITION=y CONFIG_NLS=y CONFIG_NLS_DEFAULT="iso8859-15" CONFIG_NLS_CODEPAGE_437=y CONFIG_NLS_CODEPAGE_850=y CONFIG_NLS_CODEPAGE_860=y CONFIG_NLS_ISO8859_1=y CONFIG_NLS_ISO8859_15=y CONFIG_EARLY_PRINTK=y CONFIG_4KSTACKS=y CONFIG_CRYPTO=y CONFIG_CRYPTO_HMAC=y CONFIG_CRYPTO_NULL=m CONFIG_CRYPTO_MD4=m CONFIG_CRYPTO_MD5=y CONFIG_CRYPTO_SHA1=y CONFIG_CRYPTO_SHA256=m CONFIG_CRYPTO_SHA512=m CONFIG_CRYPTO_DES=y CONFIG_CRYPTO_BLOWFISH=m CONFIG_CRYPTO_TWOFISH=m CONFIG_CRYPTO_SERPENT=m CONFIG_CRYPTO_AES_586=m CONFIG_CRYPTO_CAST5=m CONFIG_CRYPTO_CAST6=m CONFIG_CRYPTO_TEA=m CONFIG_CRYPTO_ARC4=m CONFIG_CRYPTO_KHAZAD=m CONFIG_CRYPTO_DEFLATE=y CONFIG_CRYPTO_MICHAEL_MIC=m CONFIG_CRYPTO_CRC32C=m CONFIG_CRYPTO_TEST=m CONFIG_CRC_CCITT=m CONFIG_CRC32=m CONFIG_LIBCRC32C=m CONFIG_ZLIB_INFLATE=y CONFIG_ZLIB_DEFLATE=y CONFIG_GENERIC_HARDIRQS=y CONFIG_GENERIC_IRQ_PROBE=y CONFIG_X86_BIOS_REBOOT=y CONFIG_PC=y -- Pedro Joćo Lopes Venda email: pjvenda < at > arrakis.dhis.org http://arrakis.dhis.org - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
