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Steven Rostedt

Is it just me, or is it harder to find motherboards, CPUs, and memory that are all compatible. I started looking for parts to build a new server and ended up just buying a refurbished Dell that had basically everything I was looking for and $500 cheaper than if I built it from parts.
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Steven Rostedt

Mastodon has made the NY Times.
https://nyti.ms/3hQbebV
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Steven Rostedt

My electric supplier notified me that my home usage is 200kwh over the average house of its size. This probably has to do with my ChromeOS build server that idles at 150w!
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Steven Rostedt

I'm trying to connect my mastodon android app to this account, but it's giving me an "Expired token" error. Anyone know how to fix it?
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Steven Rostedt

Created a new tool (WIP) That gives the output of something like this:

Total: 0.410332
  Max: 0.117048
  Min: 0.015632
  Avg: 0.041033
Count: 10
State: D
==> trace_event_raw_event_sched_switch+0xec
==> __traceiter_sched_switch+0x41
==> __schedule+0x4d3
==> schedule+0x5d
==> io_schedule+0x42
==> bit_wait_io+0xd
==> __wait_on_bit+0x4b
==> out_of_line_wait_on_bit+0x81
==> jbd2_journal_commit_transaction+0x15f1
==> kjournald2+0xa3
==> kthread+0xe9
==> ret_from_fork+0x22
Wakeup:
        ==> trace_event_raw_event_sched_wakeup_template+0x5f
        ==> try_to_wake_up+0x2e8
        ==> wake_bit_function+0x39
        ==> __wake_up_common+0x76
        ==> __wake_up_common_lock+0x6a
        ==> wake_up_bit+0x71
        ==> end_bio_bh_io_sync+0x26
        ==> clone_endio+0x103
        ==> blk_update_request+0x110
        ==> blk_mq_end_request+0x1a
        ==> blk_flush_complete_seq+0x15a
        ==> flush_end_io+0x1cf
        ==> scsi_end_request+0xdd
        ==> scsi_io_completion+0x46
        ==> blk_complete_reqs+0x40
        ==> __do_softirq+0x135

That shows the stack traces of all the places that were scheduled out in a S or D state and where it was woken up. Giving the total time of all instances of this location, as well as max, min, and average. And the number of times it was hit. There’s a surprising little number of these stacks.

Here’s the code. It depends on libtracefs 1.6.1.

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Steven Rostedt

[ANNOUNCE] libtracefs-1.6.0
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libtracefs-1.6.0 has been released, with lots of cool APIs that lets you record from the raw trace files and even read it too! With examples, in the man pages.

https://git.kernel.org/pub/scm/libs/libtrace/libtracefs.git/tag/?h=libtracefs-1.6.0
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Steven Rostedt

I guess my posts are going out. Currently working on new API for libtracefs. Hopefully it will be released by the end of the week.
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Steven Rostedt

Chirp chirp!
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Steven Rostedt

Chirp!
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