problem se sitovou kartou AR8131

Dobry den, mam problem s integrovanou sitovou kartou Atheros AR8131. Linuxovy pocitac pouzivam jako domaci server/router - 2 sitovky jsou v bridgi (domaci sit) a jedna sitovka je pripojena k modemu(internet). Nejdrive jsem mel integrovanou sitovku pripojenou v bridgi, ale dochazelo k podivnym stavum, kdy vetsina sluzeb nemohla odpovidat na dotazy klientu (bind, dhcpd, dnsmasq, postfix, dovecot, ..). Po restartu danych sluzeb to ale zase chvili fungovalo. Tento stav nastaval velmi casto pri zvysene aktivite na siti (kazdych 5min - 30min). Puvodne jsem to zkusil resit skriptem, ktery vzdy restartoval dane sluzby (to ale neni zadne reseni, pri zatizeni site byval casto dns server nedostupny, navic je to takove reseni z nouze..). Pak jsem zkusil prohodit kabely - prehodil jsem integrovanou (problemovou) sitovku se sitovkou pripojenou k internetu. Veskere problemy s nedostupnosti sluzeb zmizely (z netu jsou dostupne vsechny sluzby, nevypadavaji). Bohuzel to stale neni idealni, obcas dochazi k divnym lagum (trvaji vetsinou 0.5-2s), v log souborech se objevuji veci, u kterych netusim, co znamenaji. Proto sem pisi, rad bych znal vas nazor.

root@server:~# lsb_release -a
No LSB modules are available.
Distributor ID: Debian
Description:    Debian GNU/Linux 6.0.2 (squeeze)
Release:        6.0.2
Codename:       squeeze
root@server:~# uname -a
Linux server 2.6.32-5-686 #1 SMP Mon Jun 13 04:13:06 UTC 2011 i686 GNU/Linux

                description: Ethernet interface
                product: AR8131 Gigabit Ethernet
                vendor: Atheros Communications
                physical id: 0
                bus info: pci@0000:01:00.0
                logical name: eth1
                version: c0
                serial: [REMOVED]
                size: 100MB/s
                capacity: 1GB/s
                width: 64 bits
                clock: 33MHz
                capabilities: pm msi pciexpress vpd bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
                configuration: autonegotiation=on broadcast=yes driver=atl1c driverversion=1.0.0.2-NAPI duplex=full firmware=N/A ip=[REMOVED] latency=0 link=yes multicast=yes port=twisted pair speed=100MB/s
                resources: irq:27 memory:feac0000-feafffff ioport:dc00(size=128)

root@server:~# dmesg |grep atl1c
[    0.897025] atl1c 0000:01:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
[    0.897034] atl1c 0000:01:00.0: setting latency timer to 64
[    0.980395] atl1c 0000:01:00.0: version 1.0.0.2-NAPI
[    7.431101] atl1c 0000:01:00.0: irq 27 for MSI/MSI-X
[    7.431187] atl1c 0000:01:00.0: atl1c: eth1 NIC Link is Up<100 Mbps Full Duplex>
[ 1925.000023] NETDEV WATCHDOG: eth1 (atl1c): transmit queue 0 timed out
[ 1925.000026] Modules linked in: tcp_lp nfnetlink_queue tun sha256_generic cbc ppdev lp vboxnetadp vboxnetflt vboxdrv nfsd lockd nfs_acl auth_rpcgss sunrpc exportfs acpi_cpufreq cpufreq_conservative cpufreq_stats cpufreq_powersave cpufreq_userspace ip6_queue ip6t_LOG ip6table_raw ip6t_REJECT ip6table_mangle nf_conntrack_ipv6 nf_conntrack_proto_udplite xt_TCPMSS xt_sctp ip6table_filter ip6_tables act_mirred ifb act_police cls_flow cls_fw cls_u32 sch_htb sch_hfsc sch_ingress sch_sfq xt_time xt_connlimit xt_realm iptable_raw xt_comment xt_recent xt_policy ipt_ULOG ipt_REJECT ipt_REDIRECT ipt_NETMAP ipt_MASQUERADE ipt_ECN ipt_ecn ipt_CLUSTERIP ipt_ah ipt_addrtype nf_nat_tftp nf_nat_snmp_basic nf_nat_sip nf_nat_pptp nf_nat_proto_gre nf_nat_irc nf_nat_h323 nf_nat_ftp nf_nat_amanda ts_kmp nf_conntrack_amanda nf_conntrack_sane nf_conntrack_tftp nf_conntrack_sip nf_conntrack_proto_sctp nf_conntrack_pptp nf_conntrack_proto_gre nf_conntrack_netlink nf_conntrack_netbios_ns nf_conntrack_irc nf_conntrack_h323 nf_conntrack_ftp xt_TPROXY nf_tproxy_core xt_tcpmss xt_pkttype xt_physdev xt_owner xt_NFQUEUE xt_NFLOG nfnetlink_log xt_multiport xt_MARK xt_mark xt_mac xt_limit xt_length xt_iprange xt_helper xt_hashlimit xt_DSCP xt_dscp xt_dccp xt_conntrack xt_CONNMARK xt_connmark xt_CLASSIFY ipt_LOG xt_tcpudp xt_state iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack iptable_mangle nfnetlink bridge stp iptable_filter ip_tables x_tables fuse k8temp xts gf128mul aes_i586 aes_generic dm_crypt dm_mod hwmon_vid eeprom i2c_viapro loop i915 drm_kms_helper drm i2c_algo_bit i2c_core video output rng_core pcspkr evdev psmouse parport_pc asus_atk0110 button parport processor serio_raw usbhid hid ext3 jbd mbcache sd_mod crc_t10dif ata_generic uhci_hcd ata_piix r8169 mii thermal thermal_sys atl1c libata ehci_hcd scsi_mod usbcore nls_base [last unloaded: scsi_wait_scan]
[ 1925.029867] atl1c 0000:01:00.0: irq 27 for MSI/MSI-X
[ 1925.029947] atl1c 0000:01:00.0: atl1c: eth1 NIC Link is Up<100 Mbps Full Duplex>
[ 2355.029975] atl1c 0000:01:00.0: irq 27 for MSI/MSI-X
[ 2355.030055] atl1c 0000:01:00.0: atl1c: eth1 NIC Link is Up<100 Mbps Full Duplex>
[ 2730.032217] atl1c 0000:01:00.0: irq 27 for MSI/MSI-X
[ 2730.032297] atl1c 0000:01:00.0: atl1c: eth1 NIC Link is Up<100 Mbps Full Duplex>
[ 3060.025830] atl1c 0000:01:00.0: irq 27 for MSI/MSI-X
...
[20225.025929] atl1c 0000:01:00.0: atl1c: eth1 NIC Link is Up<100 Mbps Full Duplex>
[20905.025889] atl1c 0000:01:00.0: irq 27 for MSI/MSI-X
[20905.025969] atl1c 0000:01:00.0: atl1c: eth1 NIC Link is Up<100 Mbps Full Duplex>
[21515.025880] atl1c 0000:01:00.0: irq 27 for MSI/MSI-X
[21515.025960] atl1c 0000:01:00.0: atl1c: eth1 NIC Link is Up<100 Mbps Full Duplex>

Jul 27 17:01:01 server kernel: [16500.025920] atl1c 0000:01:00.0: irq 27 for MSI/MSI-X
Jul 27 17:01:01 server kernel: [16500.026000] atl1c 0000:01:00.0: atl1c: eth1 NIC Link is Up<100 Mbps Full Duplex>
Jul 27 17:09:11 server kernel: [16990.029845] atl1c 0000:01:00.0: irq 27 for MSI/MSI-X
Jul 27 17:09:11 server kernel: [16990.029925] atl1c 0000:01:00.0: atl1c: eth1 NIC Link is Up<100 Mbps Full Duplex>
Jul 27 17:16:31 server kernel: [17430.025891] atl1c 0000:01:00.0: irq 27 for MSI/MSI-X
Jul 27 17:16:31 server kernel: [17430.025971] atl1c 0000:01:00.0: atl1c: eth1 NIC Link is Up<100 Mbps Full Duplex>
Jul 27 17:22:56 server kernel: [17815.025869] atl1c 0000:01:00.0: irq 27 for MSI/MSI-X
Jul 27 17:22:56 server kernel: [17815.025949] atl1c 0000:01:00.0: atl1c: eth1 NIC Link is Up<100 Mbps Full Duplex>
Jul 27 17:30:07 server kernel: [18245.026467] atl1c 0000:01:00.0: irq 27 for MSI/MSI-X
Jul 27 17:30:07 server kernel: [18245.026547] atl1c 0000:01:00.0: atl1c: eth1 NIC Link is Up<100 Mbps Full Duplex>
Jul 27 17:38:17 server kernel: [18735.025887] atl1c 0000:01:00.0: irq 27 for MSI/MSI-X
Jul 27 17:38:17 server kernel: [18735.025967] atl1c 0000:01:00.0: atl1c: eth1 NIC Link is Up<100 Mbps Full Duplex>
Jul 27 17:46:17 server kernel: [19215.025870] atl1c 0000:01:00.0: irq 27 for MSI/MSI-X
Jul 27 17:46:17 server kernel: [19215.025950] atl1c 0000:01:00.0: atl1c: eth1 NIC Link is Up<100 Mbps Full Duplex>
Jul 27 17:53:01 server kernel: [19620.025875] atl1c 0000:01:00.0: irq 27 for MSI/MSI-X
Jul 27 17:53:01 server kernel: [19620.025955] atl1c 0000:01:00.0: atl1c: eth1 NIC Link is Up<100 Mbps Full Duplex>
Jul 27 18:03:07 server kernel: [20225.025849] atl1c 0000:01:00.0: irq 27 for MSI/MSI-X
Jul 27 18:03:07 server kernel: [20225.025929] atl1c 0000:01:00.0: atl1c: eth1 NIC Link is Up<100 Mbps Full Duplex>
Jul 27 18:14:27 server kernel: [20905.025889] atl1c 0000:01:00.0: irq 27 for MSI/MSI-X
Jul 27 18:14:27 server kernel: [20905.025969] atl1c 0000:01:00.0: atl1c: eth1 NIC Link is Up<100 Mbps Full Duplex>
Jul 27 18:24:37 server kernel: [21515.025880] atl1c 0000:01:00.0: irq 27 for MSI/MSI-X
Jul 27 18:24:37 server kernel: [21515.025960] atl1c 0000:01:00.0: atl1c: eth1 NIC Link is Up<100 Mbps Full Duplex>

Pada modul nebo snad nejaky problem v modemu, ze by vypadavala linka? Taky moc nechapu, ze jednou je preruseni 17 a podruhe 27 (asi problem ve me, moc se v techto nizkourovnovych vecech nevyznam).

Budu rad za kazdou radu :)

Dotaz: problem se sitovou kartou AR8131

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