Displaying 6 results from an estimated 6 matches for "sync_request".
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async_request
2005 Oct 28
0
Xen and EVMS/Raid5 - Null pointer dereference
...nction+0x0/0x60
Oct 28 10:36:40 localhost kernel: [try_to_wake_up+177/208] try_to_wake_up+0xb1/0xd0
Oct 28 10:36:40 localhost kernel: [handle_stripe+2630/4048] handle_stripe+0xa46/0xfd0
Oct 28 10:36:40 localhost kernel: [schedule+745/1312] schedule+0x2e9/0x520
Oct 28 10:36:40 localhost kernel: [sync_request+210/304] sync_request+0xd2/0x130
Oct 28 10:36:40 localhost kernel: [md_do_sync+1571/2048] md_do_sync+0x623/0x800
Oct 28 10:36:40 localhost kernel: [recalc_task_prio+136/336] recalc_task_prio+0x88/0x150
Oct 28 10:36:40 localhost kernel: [activate_task+98/128] activate_task+0x62/0x80
Oct 28 10:36:...
2012 Feb 06
1
Unknown KERNEL Warning in boot messages
...lowpath_common+0x87/0xc0
[<ffffffff810699ea>] ? warn_slowpath_null+0x1a/0x20
[<ffffffff814eccc5>] ? thread_return+0x232/0x79d
[<ffffffffa0073654>] ? raise_barrier+0xb4/0x1e0 [raid10]
[<ffffffff8105e770>] ? default_wake_function+0x0/0x20
[<ffffffffa00747d1>] ? sync_request+0x541/0xa70 [raid10]
[<ffffffffa0073599>] ? raid10_unplug+0x29/0x30 [raid10]
[<ffffffff813ea428>] ? is_mddev_idle+0xc8/0x120
[<ffffffff813eab6d>] ? md_do_sync+0x6ad/0xbe0
[<ffffffff813eb336>] ? md_thread+0x116/0x150
[<ffffffff813eb220>] ? md_thread+0x0/0x150...
2016 Jun 13
1
Slow RAID Check/high %iowait during check after updgrade from CentOS 6.5 -> CentOS 7.2
...majchrzak at intel.com>
To: linux-raid at vger.kernel.org
Subject: [PATCH] raid1/raid10: slow down resync if there is non-resync activity pending
A performance drop of mkfs has been observed on RAID10 during resync
since commit 09314799e4f0 ("md: remove 'go_faster' option from
->sync_request()"). Resync sends so many IOs it slows down non-resync
IOs significantly (few times). Add a short delay to a resync. The
previous long sleep (1s) has proven unnecessary, even very short delay
brings performance right.
The change also applied to raid1. The problem has not been observed on
raid...
2016 Jun 01
2
Slow RAID Check/high %iowait during check after updgrade from CentOS 6.5 -> CentOS 7.2
Kelly Lesperance wrote:
> I did some additional testing - I stopped Kafka on the host, and kicked
> off a disk check, and it ran at the expected speed overnight. I started
> kafka this morning, and the raid check's speed immediately dropped down to
> ~2000K/Sec.
>
> I then enabled the write-back cache on the drives (hdparm -W1 /dev/sd*).
> The raid check is now running
2006 Mar 06
6
gmirror(8) and graid3(8) changes.
Hi.
Here you can find patches with changes to gmirror(8) and graid3(8):
http://people.freebsd.org/~pjd/patches/gmirror.7.patch
http://people.freebsd.org/~pjd/patches/graid3.patch
The patches does the following:
- Significant synchronization speed improvement. Now many parallel
synchronization I/O requests can be used instead of only one before.
Many people requested this.
- Close race
2006 Apr 12
1
powerd not behaving with an Asus A8V-MX and Athlon 64 X2 3800+
....cam.cd.changer.max_busy_seconds: 15
kern.cam.cd.0.minimum_cmd_size: 10
kern.cam.da.retry_count: 4
kern.cam.da.default_timeout: 60
kern.cam.da.0.minimum_cmd_size: 10
kern.cam.da.1.minimum_cmd_size: 10
kern.disks: da1 da0 cd0 ad6 ad4
kern.geom.debugflags: 0
kern.geom.collectstats: 1
kern.geom.mirror.sync_requests: 2
kern.geom.mirror.disconnect_on_failure: 1
kern.geom.mirror.idletime: 5
kern.geom.mirror.timeout: 4
kern.geom.mirror.debug: 0
kern.elf32.fallback_brand: -1
kern.init_path: /sbin/init:/sbin/oinit:/sbin/init.bak:/rescue/init:/stand/sysinstall
kern.init_shutdown_timeout: 120
kern.acct_suspend: 2
ke...