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Re: System perforamance 4.x vs. 5.x and 6.x



At 05:27 PM 2/14/2008, Brett Bump wrote:

stat doesn't show as much as gstat and iostat.  Gstat alwasy shows my
drive with /var/mail being 97-100% busy and iostat will always show hi
tps rates, but never anything above 8MB/s (4.10 gave me 30MB/s+).

If a lot of users are checking mail at once, the disk might be busying seeking around the disk.



Kernel is generic with ipfirewall quota and smp (no ipfw rules yet).

I would change to pf instead of ipf as its better supported. Or just use ipfw.

On Thu, 14 Feb 2008, Bill Moran wrote:

> What _is_ the hardware?

Dell PowerEdge 1750 1U, 146Gig U320s.  The Broadcoms seem to be a change
from the earlier 1550s with intel pro/100s (I prefer the intel's).

So this is not the same hardware as before that was running releng_4 ?


I was suspicious that maybe we needed more memory but swap has barely even
been touched (232k used...with 1400meg inactive).

Stiill, it might help by allowing more caching... Also I would still increase dirhash as you are getting close to the limit. Also, if you have a large master.passwd file (e.g. > 1000), try changing nsswitch.conf as instructed in

http://www.freebsd.org/cgi/query-pr.cgi?pr=75855

We had to do this on our pop server otherwise just doing an ls in /var/mail would take several minutes.


> what does
> netstat -ni
> give

-bash-2.05b$ netstat -ni
Name Mtu Network Address Ipkts Ierrs Opkts Oerrs Coll bge0 1500 <Link#1> 00:0f:1f:66:0e:e6 12511748 902 12025487 0 0 bge0 1500 208.107.160/2 208.107.161.82 17011211 - 16533277 - - bge1 1500 <Link#2> 00:0f:1f:66:0e:e8 3523091 586 4089056 0 0 bge1 1500 10.1.1/24 10.1.1.1 3516790 - 4087415 - - lo0 16384 <Link#3> 4659734 0 4659733 0 0 lo0 16384 fe80:3::1/64 fe80:3::1 0 - 0 - - lo0 16384 ::1/128 ::1 2772 - 2772 - - lo0 16384 127 127.0.0.1 147255 - 147255 - -

> and what options do you have on ifconfig ?  Are the errors seen on
> your switch port as well or just in netstat -ni ?

ifconfig_bge0="inet 208.107.161.82 netmask 255.255.254.0 media 100baseTX mediaopt full-duplex" ifconfig_bge1="inet 10.1.1.1 netmask 255.255.255.0 media 100baseTX mediaopt full-duplex"

No, the switch shows clear, they only show up as input errors on this box.
The box sitting under this one has an uptime of 621 days with 1 Oerr.


I seem to recall people having issues with the media selection using bge based nics. e.g.
http://www.freebsd.org/cgi/query-pr.cgi?pr=112570

I would try using autoneg instead. There are other options that might not be getting set right (e.g. FC). autoneg might take care of it for you, but as I said before there have been a number of bug fixes to the driver since 6.2. Similarly, the ports you are using have known security issues from 6.2 so you are better off to start from 6.3 and its port as you will have less patching to do.

---Mike
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