Hi Dave,
Excellent test and bug report.
I wonder whether it may be related to this:
https://project.openfiler.com/tracker/ticket/435
Can you try to reproduce with a UP kernel pls.
Also I need the output of `uname -r`
Thx,
R.
FTR: this is running r58 from IET svn
Dave Watkins wrote:
Hi All
I think I've found a bug in the iscsi target software in my
benchmarking/testing.
Some background on the hardware first in case it may be related.
Dual core/dual opteron with 2GB of ram
3ware 8006 2 port raid card for OS drives
3ware 9550SX card for data drives
Dual GB Broadcom on-board NIC's teamed into bond0 (management)
Quad port Intel PCI-E GB NIC with all 4 ports teamed into bond1 (main
iscsi data network)
4 x 250GB WD SATA HDD's in RAID5
Of note here is that I have had to replace the e1000 driver with the
latest from Intel to support the quad port card
I have made some volumes and mounted them on various windows servers and
have been using iobench to tune performance of the system. When using a
read only test pattern I see this
BUG: soft lockup detected on CPU#0!
Call Trace: <IRQ> <ffffffff8029f73c>{softlockup_tick+210}
<ffffffff80289151>{update_process_times+66}
<ffffffff802713fe>{smp_local_timer_interrupt+35}
<ffffffff80271463>{smp_apic_timer_interrupt+65}
<ffffffff8025f54c>{apic_timer_interrupt+132} <EOI>
<ffffffff88141486>{:iscsi_trgt:istd+83}
<ffffffff88141476>{:iscsi_trgt:istd+67}
<ffffffff80403ea6>{tcp_sendpage+0}
<ffffffff8027fef6>{__wake_up_common+67}
<ffffffff8029131c>{keventd_create_kthread+0}
<ffffffff88141433>{:iscsi_trgt:istd+0}
<ffffffff8029131c>{keventd_create_kthread+0}
<ffffffff80231a7d>{kthread+200}
<ffffffff8025f8a2>{child_rip+8}
<ffffffff8029131c>{keventd_create_kthread+0}
<ffffffff802319b5>{kthread+0} <ffffffff8025f89a>{child_rip+0}
BUG: soft lockup detected on CPU#0!
Call Trace: <IRQ> <ffffffff8029f73c>{softlockup_tick+210}
<ffffffff80289151>{update_process_times+66}
<ffffffff802713fe>{smp_local_timer_interrupt+35}
<ffffffff80271463>{smp_apic_timer_interrupt+65}
<ffffffff8025f54c>{apic_timer_interrupt+132} <EOI>
<ffffffff802631ec>{_spin_unlock_irqrestore+8}
<ffffffff80246a25>{try_to_wake_up+955}
<ffffffff881411cc>{:iscsi_trgt:nthread_wakeup+47}
<ffffffff8814219a>{:iscsi_trgt:istd+3431}
<ffffffff80403ea6>{tcp_sendpage+0}
<ffffffff8027fef6>{__wake_up_common+67}
<ffffffff8029131c>{keventd_create_kthread+0}
<ffffffff88141433>{:iscsi_trgt:istd+0}
<ffffffff8029131c>{keventd_create_kthread+0}
<ffffffff80231a7d>{kthread+200}
<ffffffff8025f8a2>{child_rip+8}
<ffffffff8029131c>{keventd_create_kthread+0}
<ffffffff802319b5>{kthread+0} <ffffffff8025f89a>{child_rip+0}
Doing write only based patterns this doesn't come up. After this
performance of the system dives (from about 110MB/sec of iscsi
performance to about 10MB/sec).
This is fairly reproducible here so if you need anymore information just
ask.
Dave
------------------------------------------------------------------------
_______________________________________________
Openfiler-users mailing list
[email protected]
https://lists.openfiler.com/mailman/listinfo/openfiler-users
_______________________________________________
Openfiler-users mailing list
[email protected]
https://lists.openfiler.com/mailman/listinfo/openfiler-users
