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Date:      Sun, 8 Jan 2012 17:25:02 +0200
From:      =?windows-1251?B?yu7t/Oru4iDF4uPl7ejp?= <kes-kes@yandex.ru>
To:        =?windows-1251?B?yu7t/Oru4iDF4uPl7ejp?= <kes-kes@yandex.ru>
Cc:        freebsd-bugs@FreeBSD.org, freebsd-questions@freebsd.org
Subject:   Re[10]: high load system do not take all CPU time
Message-ID:  <819444292.20120108172502@yandex.ru>
In-Reply-To: <1332691712.20120108165534@yandex.ru>
References:  <9110154891.20111226214424@yandex.ru> <201112262154.pBQLsxJt038471@mail.r-bonomi.com> <1863129064.20120105223118@yandex.ru> <1332691712.20120108165534@yandex.ru>

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ÊÅ> Also I notice next:
ÊÅ>  in case of overload  'ping localhost' or any IP this router has get
ÊÅ>  timeouts about 50-100ms, pinging any external host on LAN or Internet
ÊÅ>  get normal results: 5ms LAN, 40ms Internet.

ÊÅ> I do not think this issue related to re0 interface or its driver.
ÊÅ> This is related to kernel and its structures.

details:

which system queues or buffers can cause such bad results for
localhost pinging?


# ping 127.0.0.1
PING 127.0.0.1 (127.0.0.1): 56 data bytes
64 bytes from 127.0.0.1: icmp_seq=0 ttl=64 time=122.377 ms
64 bytes from 127.0.0.1: icmp_seq=1 ttl=64 time=53.025 ms
64 bytes from 127.0.0.1: icmp_seq=2 ttl=64 time=36.214 ms
64 bytes from 127.0.0.1: icmp_seq=3 ttl=64 time=85.151 ms
64 bytes from 127.0.0.1: icmp_seq=4 ttl=64 time=105.704 ms
64 bytes from 127.0.0.1: icmp_seq=5 ttl=64 time=1.145 ms
64 bytes from 127.0.0.1: icmp_seq=6 ttl=64 time=26.240 ms
64 bytes from 127.0.0.1: icmp_seq=7 ttl=64 time=37.532 ms
64 bytes from 127.0.0.1: icmp_seq=8 ttl=64 time=20.161 ms
64 bytes from 127.0.0.1: icmp_seq=9 ttl=64 time=7.876 ms
64 bytes from 127.0.0.1: icmp_seq=10 ttl=64 time=36.441 ms
64 bytes from 127.0.0.1: icmp_seq=11 ttl=64 time=0.840 ms
64 bytes from 127.0.0.1: icmp_seq=12 ttl=64 time=45.483 ms
64 bytes from 127.0.0.1: icmp_seq=13 ttl=64 time=29.629 ms
64 bytes from 127.0.0.1: icmp_seq=14 ttl=64 time=0.025 ms
64 bytes from 127.0.0.1: icmp_seq=15 ttl=64 time=86.228 ms
64 bytes from 127.0.0.1: icmp_seq=16 ttl=64 time=141.489 ms
64 bytes from 127.0.0.1: icmp_seq=17 ttl=64 time=118.011 ms
64 bytes from 127.0.0.1: icmp_seq=18 ttl=64 time=14.077 ms
64 bytes from 127.0.0.1: icmp_seq=19 ttl=64 time=0.599 ms
64 bytes from 127.0.0.1: icmp_seq=20 ttl=64 time=0.041 ms
64 bytes from 127.0.0.1: icmp_seq=21 ttl=64 time=59.191 ms
64 bytes from 127.0.0.1: icmp_seq=22 ttl=64 time=36.222 ms
64 bytes from 127.0.0.1: icmp_seq=23 ttl=64 time=3.278 ms
64 bytes from 127.0.0.1: icmp_seq=24 ttl=64 time=153.970 ms
64 bytes from 127.0.0.1: icmp_seq=25 ttl=64 time=71.832 ms
64 bytes from 127.0.0.1: icmp_seq=26 ttl=64 time=0.740 ms
64 bytes from 127.0.0.1: icmp_seq=27 ttl=64 time=22.389 ms
64 bytes from 127.0.0.1: icmp_seq=28 ttl=64 time=6.637 ms
64 bytes from 127.0.0.1: icmp_seq=29 ttl=64 time=2.888 ms
64 bytes from 127.0.0.1: icmp_seq=30 ttl=64 time=27.595 ms
64 bytes from 127.0.0.1: icmp_seq=31 ttl=64 time=59.914 ms
64 bytes from 127.0.0.1: icmp_seq=32 ttl=64 time=8.892 ms
^C
--- 127.0.0.1 ping statistics ---
33 packets transmitted, 33 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 0.025/43.086/153.970/43.818 ms

last pid: 34214;  load averages:  4.02,  4.13,  4.38          up 8+20:50:08  17:18:01
276 processes: 6 running, 251 sleeping, 16 waiting, 3 lock
CPU 0: 16.5% user,  0.0% nice, 12.2% system, 48.9% interrupt, 22.3% idle
CPU 1: 12.2% user,  0.0% nice, 13.7% system, 60.4% interrupt, 13.7% idle
CPU 2:  8.6% user,  0.0% nice,  8.6% system, 68.3% interrupt, 14.4% idle
CPU 3: 10.8% user,  0.0% nice,  4.3% system, 72.7% interrupt, 12.2% idle
Mem: 638M Active, 2804M Inact, 313M Wired, 135M Cache, 112M Buf, 8736K Free
Swap: 4096M Total, 16M Used, 4080M Free

  PID USERNAME   PRI NICE   SIZE    RES STATE   C   TIME   WCPU COMMAND
   12 root       -72    -     0K   160K *per-i  3  67.7H 95.26% {swi1: netisr 3}
   12 root       -72    -     0K   160K CPU1    1  46.5H 84.62% {swi1: netisr 1}
   12 root       -72    -     0K   160K *per-i  2  24.5H 36.57% {swi1: netisr 2}
   11 root       155 ki31     0K    32K RUN     0 139.3H 34.81% {idle: cpu0}
   12 root       -72    -     0K   160K *per-i  3  19.6H 32.57% {swi1: netisr 0}
   11 root       155 ki31     0K    32K RUN     1 141.2H 19.48% {idle: cpu1}
   11 root       155 ki31     0K    32K CPU2    2 140.2H 17.43% {idle: cpu2}
   11 root       155 ki31     0K    32K CPU3    3 141.5H 15.92% {idle: cpu3}
   12 root       -92    -     0K   160K WAIT    0  26.4H 13.09% {irq256: re0}
93929 root        24    0 15392K  5616K select  0  86:57  6.88% snmpd
   13 root       -16    -     0K    32K sleep   2 599:49  4.83% {ng_queue1}
   13 root       -16    -     0K    32K sleep   2 600:32  4.20% {ng_queue0}
   13 root       -16    -     0K    32K sleep   3 600:57  3.86% {ng_queue3}
   13 root       -16    -     0K    32K sleep   0 600:05  3.76% {ng_queue2}
34145 cacti       27    0 12000K  3096K select  0   0:00  1.22% snmpwalk
34185 cacti       52    0 32256K 16604K nanslp  2   0:00  0.93% php
86746 root        20    0   139M 57632K select  2  17:09  0.29% {mpd5}
86746 root        20    0   139M 57632K select  0   0:00  0.29% {mpd5}
86746 root        20    0   139M 57632K select  2   0:00  0.29% {mpd5}
32865 freeradius  20  -20   151M   123M usem    3   1:31  0.24% {radiusd}
32865 freeradius  20  -20   151M   123M usem    2   1:31  0.24% {radiusd}
32865 freeradius  20  -20   151M   123M usem    0   1:25  0.24% {radiusd}

    1 users    Load  4.88  4.34  4.45                  Jan  8 17:18

Mem:KB    REAL            VIRTUAL                       VN PAGER   SWAP PAGER
        Tot   Share      Tot    Share    Free           in   out     in   out
Act  883556   12112  3211480    38276  159236  count          24
All 1086936   19504  5456924    92620          pages          26
Proc:                                                            Interrupts
  r   p   d   s   w   Csw  Trp  Sys  Int  Sof  Flt    534 cow   36566 total
  1         199      126k 4667  12k  20k  13k 2280    765 zfod     43 ata0 14
                                                      157 ozfod     1 ehci0 16
 8.2%Sys  62.7%Intr  2.8%User  0.0%Nice 26.3%Idle      20%ozfod     2 ehci1 23
|    |    |    |    |    |    |    |    |    |    |       daefr  4127 cpu0:timer
====+++++++++++++++++++++++++++++++>>                 826 prcfr 20188 re0 256
                                       155 dtbuf     2434 totfr  4096 cpu1:timer
Namei     Name-cache   Dir-cache    142271 desvn          react  4032 cpu3:timer
   Calls    hits   %    hits   %     48240 numvn          pdwak  4077 cpu2:timer
   12498   12492 100                 34644 frevn          pdpgs
                                                          intrn
Disks   ad0   da0 pass0                            320468 wire
KB/t  16.85  0.00  0.00                            632440 act
tps      43     0     0                           2879156 inact
MB/s   0.70  0.00  0.00                            132996 cache
%busy     3     0     0                             26376 free
                                                   114976 buf


-- 
Ñ óâàæåíèåì,
 Êîíüêîâ                          mailto:kes-kes@yandex.ru




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