From: Mounir STAMBOULI (mounir.stambouli@LAPOSTE.NET)
Date: Wed Feb 19 2003 - 15:37:21 EST
We recently upgraded the microcode and get now approx 17.5 MBps per adapter
with low wait-io. Is that a "normal" value for a direct attachment to a
2105-F20 ?
Mounir
----- Original Message -----
From: <Holger.VanKoll@SWISSCOM.COM>
Newsgroups: bit.listserv.aix-l
To: <aix-l@Princeton.EDU>
Sent: Thursday, February 13, 2003 4:41 PM
Subject: Re: disk I/O throughput
> r u sure you produce more load than 8mbps?
>
> try
>
> dd </dev/rvpath-some-number >/dev/null bs=64k
>
> and have a look at topas, iostat or nmon
>
>
> -----Original Message-----
> From: mounir.stambouli [mailto:mounir.stambouli@LAPOSTE.NET]
> Sent: Thursday, February 13, 2003 4:32 PM
> To: aix-l@Princeton.EDU
> Subject: disk I/O throughput
>
>
> Hello,
>
> We've got an AIX 5.1 box with FC adapters directly connected
> to ESS FC ports (no SAN). The theoretical throughput is 100+ MBPS but nmon
reports that we're getting no more than 8 MBPS !!! I have paste the output
of lsattr of various devices. ESS volumes are configured as RAID5 seen
through 2 paths for each vpath.
>
> Is there any additional config to be done ?
> Where should I look on the ESS ?
>
> Thanks in advance,
> Mounir
>
>
>
> U62CTSM001:/ lsattr -El fcs0
> bus_intr_lvl 51 Bus interrupt
> level False
> intr_priority 3 Interrupt
> priority False
> bus_io_addr 0xec00 Bus I/O
> address False
> bus_mem_addr 0xe0020000 Bus memory
> address False
> lg_term_dma 0x200000
> N/A True
> max_xfer_size 0x1000000 Maximum Transfer
> Size True
> num_cmd_elems 1024 Maximum number of COMMANDS to queue
> to the adapter True
> pref_alpa 0x1 Preferred
> AL_PA True
> sw_fc_class 2 FC Class for
> Fabric True
> init_link al INIT Link
> flags True
> U62CTSM001:/ lsattr -El fscsi0
> scsi_id 0x1 Adapter SCSI ID False
> attach al How this adapter is CONNECTED False
> sw_fc_class 3 FC Class for Fabric True
> U62CTSM001:/ lsattr -El hdisk13
> scsi_id 0xef N/A
> True
> lun_id 0x5029000000000000 N/A
> True
> location N/A
> True
> ww_name 0x5005076300c68efe N/A
> False
> pvid none Physical volume identifier
> False
> q_type simple Queuing TYPE
> True
> queue_depth 20 Queue DEPTH
> True
> start_timeout 180
> eout 60 READ/WRITE time out value
> True
>
>
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