Hello, AIX-gurus! We have some AIX networking (?) issue, for test I created 2 LPARs (AIX 6.1) on 2 different blade IBM power servers (p702 with POWER7 on board), located in same BladeCenter H.
Networking bandwith between them is 1Gbit/s
But when I copy files with scp, even with fastest available cipher arcfour, it shows about 30 Mb/s (about 240 MBit/s bandwidth),
I even tried rsync-daemon, which is not using encryption, unlike regular rsync, it gives about 36 Mb/s (same bandwidth as scp)
I think it's AIX issue, because we have some x86_64 machines in this network, and when I use scp on them, with same cipher I recieve about 80 Mb/s-100Mb/s download speed.
ssh, scp et al have high CPU overhead from encryption and aren't representative of down-to-the-wire performance.
You also have your disks to consider. How fast would that happen if you wrote to /dev/null instead of ssh? Also, caching. Does it speed up when you run it twice?
Easiest utility I know to throw unencrypted content down the wire ASAP is udpcast. Of course, it's wide-open and limited to your local subnet. It can have more than one receiver with no bandwidth penalty however.
Hi,
I'm supposed to capture many performance stats on AIX 6 and stuck up with below:
Priority queue
Disk cache hit%
Page out rate
Swap out rate
Memory queue
I see vmstatis helpful for "page out" but not sure how to get the "rate".
Could anyone please let me know how to get these... (4 Replies)
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Hello,
I'm trying to set up an internet connection on an IBM RS/6000 7043-140 machine with AIX v 5.1. The problem is that no matter if it is setup to receive an IP address from another DHCP server or has a static IP set, it seems to act as a DHCP server that assigns a random IP address with a... (3 Replies)
Hi Guys,
This is the situation I am in. Provide your views and input where should I start?
I have one P7 test server and a p520 production server. the job is taking pretty long on the P7 test server when compared to the P5 production server. below is the full detail.
Informix... (5 Replies)
Gurus, i have process that runs 5 times a day.
it runs normally (takes about 1 hour) to complete in 3 runs
but it is takes about ( 3 hrs to complete) two times
So i need to figure out why it takes significanlty high time during
those 2 runs.
The process is a shell script that connect to... (2 Replies)
I am trying to analyze the performance of an AIX system. I think I may have a disk I/O issue, but I am asking for help to validate or invalidate this assumption. I ran the commands below during a period of peak load.
Please help me to find any performance bottlenecks. Thanks in advance for your... (15 Replies)
I'm doing performance testing for one application which works on AIX.
But I don't know which performance parameters of memory need to be collected. Now, I just know very few:
1. page in
2. page out
3. fre
They are all collected by "vmstat" command.
I want to know, except for above... (2 Replies)
Hi,
I am using AIX 5.2, and I want to copy some files from one server to a remote server using tar command. Can anybody tell me exact command?
Thanks.
Aqeel (2 Replies)
Hiya all,
I am a newbie sysadmin to AIX, i have worked on HPUX for 3 years.
I have started a new role with in an IBM house and because there is me and one other there are a couple of issues I cannot work out:
We havehad a production server slowing down processing batch jbs over the past... (6 Replies)