search for: nr_run

Displaying 7 results from an estimated 7 matches for "nr_run".

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2012 Sep 12
2
Deadlock in btrfs-cleaner, related to snapshot deletion
...nularity : 2.000000 [ 386.319917] .sysctl_sched_child_runs_first : 0 [ 386.319920] .sysctl_sched_features : 24119 [ 386.319924] .sysctl_sched_tunable_scaling : 1 (logaritmic) [ 386.319929] [ 386.319929] cpu#0, 3013.515 MHz [ 386.319933] .nr_running : 2 [ 386.319936] .load : 2048 [ 386.319939] .nr_switches : 437801 [ 386.319942] .nr_load_updates : 22334 [ 386.319945] .nr_uninterruptible : 3 [ 386.319948] .next_balance : 42...
2010 Nov 18
9
Interesting problem with write data.
Hi, Recently, I made a btrfs to use. And I met slowness problem. Trying to diag it. I found this: 1. dd if=/dev/zero of=test count=1024 bs=1MB This is fast, at about 25MB/s, and reasonable iowait. 2. dd if=/dev/zero of=test count=1 bs=1GB This is pretty slow, at about 1.5MB/s, and 90%+ iowait, constantly. May I know why it works like this? Thanks. -- To unsubscribe from this list: send the
2017 Oct 18
2
Null deference panic in CentOS-6.5
...ffffffff8100c20a The [cbd] is a module developed by us, I think this bug has nothing to do with it. And the contents of rq in pick_next_task(struct rq *rq) is (see attachement for full contents of struct rq): struct rq { lock = { raw_lock = { slock = 67109881 } }, nr_running = 2, cpu_load = {0, 5923, 14993, 13888, 9115}, last_load_update_tick = 4365159236, nohz_balance_kick = 0 '\000', skip_clock_update = 0, load = { weight = 2, inv_weight = 0 }, nr_load_updates = 21530842, nr_switches = 148355748, cfs = {...
2013 Jun 10
1
btrfs-cleaner Blocked on xfstests 068
...ched_wakeup_granularity : 2.000000 [ 413.409157] .sysctl_sched_child_runs_first : 0 [ 413.409157] .sysctl_sched_features : 11899 [ 413.409157] .sysctl_sched_tunable_scaling : 1 (logaritmic) [ 413.409157] cpu#0, 3389.233 MHz [ 413.409157] .nr_running : 0 [ 413.409157] .load : 0 [ 413.409157] .nr_switches : 56682 [ 413.409157] .nr_load_updates : 19627 [ 413.409157] .nr_uninterruptible : -100 [ 413.409157] .next_balance : 429...
2012 Jul 31
2
Btrfs Intermittent ENOSPC Issues
I''ve been working on running down intermittent ENOSPC issues. I can only seem to replicate ENOSPC errors when running zlib compression. However, I have been seeing similar ENOSPC errors to a lesser extent when playing with the LZ4HC patches. I apologize for not following up on this sooner, but I had drifted away from using zlib, and didn''t notice there was still an issue. My
2012 Aug 01
7
[PATCH] Btrfs: barrier before waitqueue_active
We need an smb_mb() before waitqueue_active to avoid missing wakeups. Before Mitch was hitting a deadlock between the ordered flushers and the transaction commit because the ordered flushers were waiting for more refs and were never woken up, so those smp_mb()''s are the most important. Everything else I added for correctness sake and to avoid getting bitten by this again somewhere else.
2012 Oct 17
28
Xen PVM: Strange lockups when running PostgreSQL load
...of a coincidence. Oh and the spinners count in the lock was 2 as one would expect. struct rq { lock = { raw_lock = { { head_tail = 512, tickets = { head = 0 ''\000'', tail = 2 ''\002'' } } } }, nr_running = 1, ... } I really don''t know how this happens. Especially cpu#0 seems at least past the wakeup and should have removed itself from the spinners list... -Stefan [1] http://bugs.launchpad.net/bugs/1011792 From 635a4e101ccbc9a324c8000f7e264ed4e646592c Mon Sep 17 00:00:00 2001 Fro...