[lvs-users] Are LVS / ldirectord Multithreaded?

Robinson, Eric eric.robinson at psmnv.com
Fri Oct 31 21:57:06 GMT 2008


> this is in the HOWTO. LVS doesn't benefit from multiple 
> CPUs (or it didn't last we looked) 

Oops, it's been a few years since I read it. Sorry about that.

> What sort of packet throughput are you getting? 

How would you like that measured?

> Are you using LVS-DR or LVS-NAT? 

LVS-NAT

> Is the director doing anything else as well? 

Aside from running heartbeat and ldirectord with 100+ virtual servers,
not too much. Here's the output from top:

top - 13:43:47 up 81 days,  9:12,  1 user,  load average: 1.40, 1.42,
1.38
Tasks:  60 total,   1 running,  59 sleeping,   0 stopped,   0 zombie
Cpu(s): 46.8% us,  3.0% sy,  0.0% ni, 48.8% id,  0.0% wa,  1.3% hi,
0.0% si
Mem:    516304k total,   506348k used,     9956k free,    45448k buffers
Swap:  1048568k total,        4k used,  1048564k free,   369656k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
 2762 root      17   0 13708 9884 1744 S 50.4  1.9  13386:29 ldirectord
28957 root      15   0  7108 2320 1848 S  0.3  0.4   0:00.03 sshd
28993 root      16   0  1956  948  756 R  0.3  0.2   0:00.06 top
    1 root      15   0  1688  568  488 S  0.0  0.1   0:00.95 init
    2 root      34  19     0    0    0 S  0.0  0.0   0:01.00 ksoftirqd/0
    3 root      RT   0     0    0    0 S  0.0  0.0   0:00.00 watchdog/0
    4 root      10  -5     0    0    0 S  0.0  0.0   0:01.54 events/0
    5 root      10  -5     0    0    0 S  0.0  0.0   0:00.78 khelper
    6 root      10  -5     0    0    0 S  0.0  0.0   0:00.00 kthread
    8 root      10  -5     0    0    0 S  0.0  0.0   0:00.02 kblockd/0
    9 root      20  -5     0    0    0 S  0.0  0.0   0:00.00 kacpid
   97 root      10  -5     0    0    0 S  0.0  0.0   0:00.00 khubd
   99 root      10  -5     0    0    0 S  0.0  0.0   0:00.00 kseriod
  146 root      20   0     0    0    0 S  0.0  0.0   0:00.00 pdflush
  147 root      15   0     0    0    0 S  0.0  0.0   0:00.17 pdflush
  148 root      15   0     0    0    0 S  0.0  0.0   0:00.08 kswapd0
  149 root      20  -5     0    0    0 S  0.0  0.0   0:00.00 aio/0
  303 root      11  -5     0    0    0 S  0.0  0.0   0:00.00 kpsmoused
  322 root      11  -5     0    0    0 S  0.0  0.0   0:00.00 kmirrord
  335 root      10  -5     0    0    0 S  0.0  0.0   2:02.22 kjournald
 1164 root      11  -5  1588  468  384 S  0.0  0.1   0:00.01 udevd
 1550 root      11  -5     0    0    0 S  0.0  0.0   0:00.00 shpchpd
 2064 root      11  -5     0    0    0 S  0.0  0.0   0:00.00 kauditd
 2180 root      11  -5     0    0    0 S  0.0  0.0   0:00.00 kjournald
 3017 root      15   0  1596  592  500 S  0.0  0.1   0:48.74 syslogd
 3021 root      15   0  1548  384  312 S  0.0  0.1   0:00.00 klogd
 3031 root      25   0  1544  440  368 S  0.0  0.1   0:00.00 acpid
 3043 root      15   0  4068 1144  836 S  0.0  0.2   1:44.23 sshd
 3105 ntp       15   0  4456 4456 3432 S  0.0  0.9   0:00.19 ntpd
 3117 root      16   0  4524  944  536 S  0.0  0.2   0:47.57 crond
 3140 xfs       15   0  3288 1572  796 S  0.0  0.3   0:00.01 xfs
 3159 dbus      15   0  2440  812  672 S  0.0  0.2   0:00.07
dbus-daemon-1
 3184 root      15   0  2648  972  804 S  0.0  0.2   0:00.16 ha_logd
 3192 root      15   0  2648  556  392 S  0.0  0.1   0:00.15 ha_logd
 3376 root      -2   0 10812  10m 2492 S  0.0  2.1   4:11.26 heartbeat
 3434 root      15   0     0    0    0 D  0.0  0.0   0:00.09
ipvs_syncmaster
 3450 root      -2   0  4216 4216 2492 S  0.0  0.8   0:00.00 heartbeat
 3451 root      -2   0  4212 4212 2492 S  0.0  0.8   0:06.50 heartbeat
 3452 root      -2   0  4392 4216 2492 S  0.0  0.8   0:08.15 heartbeat
 3453 root      -2   0  4212 4212 2492 S  0.0  0.8   0:05.60 heartbeat
 3454 root      -2   0  4212 4212 2492 S  0.0  0.8   4:17.47 heartbeat
 3455 root      -2   0  4212 4212 2492 S  0.0  0.8   0:05.64 heartbeat
 3456 root      -2   0  4212 4212 2492 S  0.0  0.8   4:26.11 heartbeat
 3457 root      -2   0  4212 4212 2492 S  0.0  0.8   0:09.36 heartbeat
 3458 root      -2   0  4212 4212 2492 S  0.0  0.8   2:47.11 heartbeat
 3459 root      -2   0  4344 4344 2492 S  0.0  0.8   0:50.39 heartbeat
 3460 root      -2   0  4344 4344 2492 S  0.0  0.8  10:51.33 heartbeat
 3463 root      18   0  1532  412  356 S  0.0  0.1   0:00.00 mingetty
 3520 root      18   0  1532  412  356 S  0.0  0.1   0:00.00 mingetty
 3521 root      18   0  1532  412  356 S  0.0  0.1   0:00.00 mingetty
 3522 root      18   0  1532  412  356 S  0.0  0.1   0:00.00 mingetty
 3523 root      18   0  1532  412  356 S  0.0  0.1   0:00.00 mingetty
 3545 root      18   0  1536  412  356 S  0.0  0.1   0:00.00 mingetty
 3546 root      15   0 10824 2352 1932 S  0.0  0.5   0:00.04 gdm-binary
 3782 hacluste  15   0  2648 1196 1000 S  0.0  0.2   0:10.95 ipfail
 3908 root      16   0 11340 2192 1656 S  0.0  0.4   0:00.02 gdm-binary
 3931 root      15   0 19100 8872 2468 S  0.0  1.7   0:07.02 X
 3983 gdm       15   0 21368  11m 6512 S  0.0  2.3   0:06.26 gdmgreeter
 4019 root      15   0  4456 1364  340 S  0.0  0.3   0:00.00 ntpd
28961 root      15   0  4428 1464 1188 S  0.0  0.3   0:00.02 bash

> Some nics are better at handling the packets on-board, but 
> I don't know what they are. Have you looked into getting 
> the best nics? From postings on this list you should avoid 
> Broadcom. Some people like Intel.

They are all Intel. Two are on the motherboard and 1 is an add-in. I
have realservers on two different internal subnets.

--Eric


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