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Operating Systems AIX ISCSI poor performance 1.5MB/s fresh install AIX7.1 Post 302977114 by frenchy59 on Tuesday 12th of July 2016 08:11:56 PM
Old 07-12-2016
Thanks for your help Scrutinizer.

"dd if=/dev/hdisk1 of=/dev/null bs=1024k" doesn't change anything ( also tried with 256k 512k)

running two dd command simultaneously give the same result :

---
one dd command :
Code:
Network    BPS  I-Pkts  O-Pkts    B-In   B-Out
Total    8.34M   5.94K   3.96K   8.05M    302K

two dd command simultaneously :
Code:
Network    BPS  I-Pkts  O-Pkts    B-In   B-Out
Total    8.36M   5.95K   3.97K   8.06M    302K

---

For info, a ftp from the linux iscsi target to AIX:
Code:
226 Transfer complete.
2310809600 bytes sent in 37.3 secs (61991.35 Kbytes/sec)
ftp>

the other way around gives the same result.

any other idea ?

---------- Post updated at 07:11 PM ---------- Previous update was at 06:22 PM ----------

For information, if I now setup the AIX as iSCSI target, and a linux as initiator :

--on linux iSCSI initiator :
Code:
dd if=/dev/sdb of=/dev/null
^C62697+0 records in
62696+0 records out
32100352 bytes (32 MB) copied, 16.6651 s, 1.9 MB/s


--topas on AIX iSCSI target :

Code:
Network    BPS  I-Pkts  O-Pkts    B-In   B-Out 
Total    1.66M   606.5   74.00   27.8K   1.63M

Note that my disk access on the AIX is pretty good, as I have 3 SAS disk on RAID 0, I hit pretty easily the 180MB/s, so that is not the issue here ...

Last edited by Scrutinizer; 07-13-2016 at 02:30 AM..
 

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IRSEND(1)							   User Commands							 IRSEND(1)

NAME
irsend - basic LIRC program to send infra-red commands SYNOPSIS
irsend [options] DIRECTIVE REMOTE CODE [CODE...] DESCRIPTION
Asks the lircd daemon to send one or more CIR (Consumer Infra-Red) commands. This is intended for remote control of electronic devices such as TV boxes, HiFi sets, etc. DIRECTIVE can be: SEND_ONCE - send CODE [CODE ...] once SEND_START - start repeating CODE SEND_STOP - stop repeating CODE LIST - list configured remote items SET_TRANSMITTERS - set transmitters NUM [NUM ...] SIMULATE - simulate IR event REMOTE is the name of a remote, as described in the lircd configuration file. CODE is the name of a remote control key of REMOTE, as it appears in the lircd configuration file. NUM is the transmitter number of the hardware device. For the LIST DIRECTIVE, REMOTE and/or CODE can be empty: LIST "" "" - list all configured remote names LIST REMOTE "" - list all codes of REMOTE LIST REMOTE CODE - list only CODE of REMOTE The SIMULATE command only works if it has been explicitly enabled in lircd. -h --help display usage summary -v --version display version -d --device use given lircd socket [/var/run/lirc/lircd] -a --address=host[:port] connect to lircd at this address -# --count=n send command n times EXAMPLES
irsend LIST DenonTuner "" irsend SEND_ONCE DenonTuner PROG-SCAN irsend SEND_ONCE OnkyoAmpli VOL-UP VOL-UP VOL-UP VOL-UP irsend SEND_START OnkyoAmpli VOL-DOWN ; sleep 3 irsend SEND_STOP OnkyoAmpli VOL-DOWN irsend SET_TRANSMITTERS 1 irsend SET_TRANSMITTERS 1 3 4 irsend SIMULATE "0000000000000476 00 OK TECHNISAT_ST3004S" FILES
/etc/lirc/lircd.conf Default lircd configuration file. It should contain all the remotes, their infra-red codes and the corresponding timing and wave- form details. DIAGNOSTICS
If lircd is not running (or /var/run/lirc/lircd lacks write permissions) irsend aborts with the following diagnostics: "irsend: could not connect to socket" "irsend: Connection refused" (or "Permission denied"). SEE ALSO
The documentation for lirc is maintained as html pages. They are located under html/ in the documentation directory. lircd(8), mode2(1), smode2(1), xmode2(1), irrecord(1), irw(1), http://www.lirc.org. irsend 0.9.0-pre1 October 2010 IRSEND(1)
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