Yesterday i faced strange behaviour of 2.6.11 on one of my Dual PIII Gentoo servers. ( 2xPIII 1400, 2G RAM, Mylex 352, 2x Ethernet Pro 100, DL2k Gigabit Ethernet CONFIG_NFS_FS=y CONFIG_NFSD=y but actually only used as nfs server ) Description: At some moment i've found out that kernel spend ~2/3 (60-70% actually, accoring to vmstat&top) time in miragtion/1, and most of other time in idle ( although it have tasks to run [ps out attached] ) kerneltop shows get_stats and poll_idle on the top permanently: Linux s3.ir.ru 2.6.11 #1 SMP Sat Mar 5 16:22:27 MSK 2005 i686 GNU/Linux Sampling_step: 4 | Address range: 0xc0100294 - 0xc02db797 address function ...... 2005-03-24/20:28:44 ...... ticks ( 1916) c0266530 get_stats 953 c01006c0 poll_idle 674 c0265ba0 rio_interrupt 68 c0202b00 __copy_user_intel 5 c013a010 __mod_page_state 2 c0114a40 sub_preempt_count 1 c0139620 buffered_rmqueue 1 c013da40 kmem_cache_free 1 c013db00 kfree 1 c01446f0 do_anonymous_page 1 c016d2e0 lookup_mnt 1 c0202c60 __copy_to_user_ll 1 c0202cd0 __copy_from_user_ll 1 c028d350 ip_route_output_slow 1 c02921d0 ip_queue_xmit 1 c02a2250 tcp_transmit_skb 1 s3:/var/tmp/kerneltop-0.8# Sorry, but at that time i've had no idea what get_stats related to and i have no interfaces status now, only two pieces of "SysRq-t" ( dmesg too long to 32k buffer and i couldn't get more then ~10k by netconsole, [both attached] ) Another thing, for a long time i observe sun/rpc messages in the kernel log: svc: unknown version (0) svc: unknown version (0) svc: unknown version (0) svc: unknown version (0) svc: unknown version (0) ....................... but i've no problem with nfsd up to now. -- Best regards. Alexander Y. Fomichev Public PGP key: http://sysadminday.org.ru/gluk.asc