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Date: Tue, 15 Mar 2016 13:42:18 +0800
From: Ye Xiaolong <xiaolong.ye@...el.com>
To: Ville Syrjälä <ville.syrjala@...ux.intel.com>
Cc: Jani Nikula <jani.nikula@...el.com>,
LKML <linux-kernel@...r.kernel.org>, lkp@...org
Subject: Re: [lkp] [drm/i915] 0bbca274a3: 3.6% piglit.time.elapsed_time
On Mon, Mar 14, 2016 at 03:37:51PM +0200, Ville Syrjälä wrote:
>On Mon, Mar 14, 2016 at 10:14:37AM +0800, kernel test robot wrote:
>> FYI, we noticed that piglit.time.elapsed_time 3.6% regression on
>>
>> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
>> commit 0bbca274a31c2366414d8d3f95e03d1c4674d93f ("drm/i915: Actually retry with bit-banging after GMBUS timeout")
>
>Increase in system time is somewhat expected, since we'll do more
>bit banging now. Any chance of comparison against bffce907d640^
>aka. 0aeb904888f5 ("drm/i915: simplify gmbus xfer error checks") ?
>I would hope that the result would be more or less the same as with
>0bbca274a31c ("drm/i915: Actually retry with bit-banging after GMBUS timeout")
Hi, ville
FYI, here is the piglit test result of eb904888f52f48 on "lkp-u410: Ivy Bridge 4G".
eb904888f52f48 0bbca274a31c2366414d8d3f95
---------------- --------------------------
%stddev %change %stddev
\ | \
59 ± 0% -73.1% 16 ± 0% piglit.time.percent_of_cpu_this_job_got
4640 ± 1% +209.6% 14363 ± 0% piglit.time.voluntary_context_switches
62.75 ± 0% +140.7% 151.03 ± 0% piglit.time.elapsed_time
62.75 ± 0% +140.7% 151.03 ± 0% piglit.time.elapsed_time.max
33.61 ± 0% -40.3% 20.05 ± 0% piglit.time.system_time
Thanks,
Xiaolong.
>
>>
>>
>> =========================================================================================
>> compiler/group/kconfig/rootfs/tbox_group/testcase:
>> gcc-4.9/igt-039/x86_64-rhel/debian-x86_64-2015-02-07.cgz/snb-black/piglit
>>
>> commit:
>> 2f791908a70e95768596f5bb9e6de4f441d7bf13
>> 0bbca274a31c2366414d8d3f95e03d1c4674d93f
>>
>> 2f791908a70e9576 0bbca274a31c2366414d8d3f95
>> ---------------- --------------------------
>> %stddev %change %stddev
>> \ | \
>> 188.79 ± 0% +3.6% 195.58 ± 0% piglit.time.elapsed_time
>> 188.79 ± 0% +3.6% 195.58 ± 0% piglit.time.elapsed_time.max
>> 5.00 ± 0% +60.0% 8.00 ± 0% piglit.time.percent_of_cpu_this_job_got
>> 7.86 ± 0% +83.5% 14.42 ± 0% piglit.time.system_time
>> 5.00 ± 0% +60.0% 8.00 ± 0% time.percent_of_cpu_this_job_got
>> 7.86 ± 0% +83.5% 14.42 ± 0% time.system_time
>>
>> =========================================================================================
>> compiler/group/kconfig/rootfs/tbox_group/testcase:
>> gcc-4.9/igt-036/x86_64-rhel/debian-x86_64-2015-02-07.cgz/lkp-u410/piglit
>>
>> commit:
>> 2f791908a70e95768596f5bb9e6de4f441d7bf13
>> 0bbca274a31c2366414d8d3f95e03d1c4674d93f
>>
>> 2f791908a70e9576 0bbca274a31c2366414d8d3f95
>> ---------------- --------------------------
>> %stddev %change %stddev
>> \ | \
>> 141.15 ± 0% +6.9% 150.94 ± 0% piglit.time.elapsed_time
>> 141.15 ± 0% +6.9% 150.94 ± 0% piglit.time.elapsed_time.max
>> 10.00 ± 0% +60.0% 16.00 ± 0% piglit.time.percent_of_cpu_this_job_got
>> 10.61 ± 0% +88.8% 20.04 ± 0% piglit.time.system_time
>> 10.00 ± 0% +60.0% 16.00 ± 0% time.percent_of_cpu_this_job_got
>> 10.61 ± 0% +88.8% 20.04 ± 0% time.system_time
>>
>>
>> snb-black: Sandy Bridge
>> Memory: 8G
>>
>> lkp-u410: Ivy Bridge
>> Memory: 4G
>>
>>
>>
>> piglit.time.system_time
>>
>> 21 ++---------------------------------------------------------------------+
>> 20 O+ O O O O O O O O O O O O O O O O O O O O O O |
>> | |
>> 19 ++ |
>> 18 ++ |
>> 17 ++ |
>> 16 ++ |
>> | |
>> 15 ++ |
>> 14 ++ |
>> 13 ++ |
>> 12 ++ |
>> | |
>> 11 *+.*..*..*..*..*..*..*..*..*..*..*..*.*..*..*..*..*..*..*..*..*..*..*..*
>> 10 ++---------------------------------------------------------------------+
>>
>>
>> piglit.time.percent_of_cpu_this_job_got
>>
>> 16 O+-O--O--O--O--O--O--O--O--O--O--O--O-O--O--O--O--O--O--O--O--O--O-----+
>> | |
>> 15 ++ |
>> | |
>> | |
>> 14 ++ |
>> | |
>> 13 ++ |
>> | |
>> 12 ++ |
>> | |
>> | |
>> 11 *+. *.. *.. *.. |
>> | .. .. .. |
>> 10 ++-*--*--*--*--*--*-----*--*--*-----*-*--*--*-----*--*--*--*--*--*--*--*
>>
>>
>> piglit.time.elapsed_time
>>
>> 152 ++--------------------------------------------------------------------+
>> | O O O O O O O O O O O O O O O O O O O O O O |
>> 150 O+ |
>> | |
>> | |
>> 148 ++ |
>> | |
>> 146 ++ |
>> | |
>> 144 ++ |
>> | |
>> | |
>> 142 ++ .*.. |
>> *.. .*..*..*..* *..*..*..*.. .*..*..*.. .*..*..*..*..*..*
>> 140 ++-*--*----------------------------*--*-----------*--*----------------+
>>
>>
>> piglit.time.elapsed_time.max
>>
>> 152 ++--------------------------------------------------------------------+
>> | O O O O O O O O O O O O O O O O O O O O O O |
>> 150 O+ |
>> | |
>> | |
>> 148 ++ |
>> | |
>> 146 ++ |
>> | |
>> 144 ++ |
>> | |
>> | |
>> 142 ++ .*.. |
>> *.. .*..*..*..* *..*..*..*.. .*..*..*.. .*..*..*..*..*..*
>> 140 ++-*--*----------------------------*--*-----------*--*----------------+
>>
>>
>> time.system_time
>>
>> 21 ++---------------------------------------------------------------------+
>> 20 O+ O O O O O O O O O O O O O O O O O O O O O O |
>> | |
>> 19 ++ |
>> 18 ++ |
>> 17 ++ |
>> 16 ++ |
>> | |
>> 15 ++ |
>> 14 ++ |
>> 13 ++ |
>> 12 ++ |
>> | |
>> 11 *+.*..*..*..*..*..*..*..*..*..*..*..*.*..*..*..*..*..*..*..*..*..*..*..*
>> 10 ++---------------------------------------------------------------------+
>>
>>
>> time.percent_of_cpu_this_job_got
>>
>> 16 O+-O--O--O--O--O--O--O--O--O--O--O--O-O--O--O--O--O--O--O--O--O--O-----+
>> | |
>> 15 ++ |
>> | |
>> | |
>> 14 ++ |
>> | |
>> 13 ++ |
>> | |
>> 12 ++ |
>> | |
>> | |
>> 11 *+. *.. *.. *.. |
>> | .. .. .. |
>> 10 ++-*--*--*--*--*--*-----*--*--*-----*-*--*--*-----*--*--*--*--*--*--*--*
>>
>>
>>
>>
>> piglit.time.system_time
>>
>> 15 ++---------------------------------------------------------------------+
>> O O O O O O O O O O O O O O O O O O O O O O O O O |
>> 14 ++ |
>> 13 ++ |
>> | |
>> 12 ++ |
>> | |
>> 11 ++ |
>> | |
>> 10 ++ |
>> 9 ++ |
>> | |
>> 8 ++ .*..*.. .*.. .*..*. .*..*.*..*.. .*
>> *..*..*..* *..*. *.*..*..*..*. *..*..*..*. *. |
>> 7 ++---------------------------------------------------------------------+
>>
>>
>> piglit.time.elapsed_time
>>
>> 450 ++--------------------------------------------------------------------+
>> | |
>> 400 ++ O |
>> | |
>> | |
>> 350 ++ |
>> | |
>> 300 ++ |
>> | |
>> 250 ++ |
>> | |
>> | |
>> 200 O+.O..O.O..O..O..O..O.O..O..O..O..O.O..*..O..O..O.O..O..O..O..O.O..O..*
>> | |
>> 150 ++--------------------------------------------------------------------+
>>
>>
>> piglit.time.elapsed_time.max
>>
>> 450 ++--------------------------------------------------------------------+
>> | |
>> 400 ++ O |
>> | |
>> | |
>> 350 ++ |
>> | |
>> 300 ++ |
>> | |
>> 250 ++ |
>> | |
>> | |
>> 200 O+.O..O.O..O..O..O..O.O..O..O..O..O.O..*..O..O..O.O..O..O..O..O.O..O..*
>> | |
>> 150 ++--------------------------------------------------------------------+
>>
>>
>> time.system_time
>>
>> 15 ++---------------------------------------------------------------------+
>> O O O O O O O O O O O O O O O O O O O O O O O O O |
>> 14 ++ |
>> 13 ++ |
>> | |
>> 12 ++ |
>> | |
>> 11 ++ |
>> | |
>> 10 ++ |
>> 9 ++ |
>> | |
>> 8 ++ .*..*.. .*.. .*..*. .*..*.*..*.. .*
>> *..*..*..* *..*. *.*..*..*..*. *..*..*..*. *. |
>> 7 ++---------------------------------------------------------------------+
>>
>> [*] bisect-good sample
>> [O] bisect-bad sample
>>
>> To reproduce:
>>
>> git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
>> cd lkp-tests
>> bin/lkp install job.yaml # job file is attached in this email
>> bin/lkp run job.yaml
>>
>>
>> Disclaimer:
>> Results have been estimated based on internal Intel analysis and are provided
>> for informational purposes only. Any difference in system hardware or software
>> design or configuration may affect actual performance.
>>
>>
>> Thanks,
>> Xiaolong Ye
>
>> ---
>> LKP_SERVER: inn
>> LKP_CGI_PORT: 80
>> LKP_CIFS_PORT: 139
>> testcase: piglit
>> default-monitors:
>> wait: activate-monitor
>> kmsg:
>> heartbeat:
>> interval: 10
>> default-watchdogs:
>> oom-killer:
>> watchdog:
>> commit: 0bbca274a31c2366414d8d3f95e03d1c4674d93f
>> model: Ivy Bridge
>> nr_cpu: 4
>> memory: 4G
>> nr_hdd_partitions: 0
>> hdd_partitions:
>> netconsole_port: 6674
>> category: functional
>> timeout: 30m
>> piglit:
>> group: igt-036
>> queue: bisect
>> testbox: lkp-u410
>> tbox_group: lkp-u410
>> kconfig: x86_64-rhel
>> enqueue_time: 2016-03-12 08:10:38.141424169 +08:00
>> compiler: gcc-4.9
>> rootfs: debian-x86_64-2015-02-07.cgz
>> id: 7ebc10fb2ac0e90fb2e346efbdcda69faf9f4c18
>> user: lkp
>> head_commit: 884dcd36fc68f78a12db2ae041eaeadb230b460b
>> base_commit: f6cede5b49e822ebc41a099fe41ab4989f64e2cb
>> branch: linux-devel/devel-hourly-2016031201
>> result_root: "/result/piglit/igt-036/lkp-u410/debian-x86_64-2015-02-07.cgz/x86_64-rhel/gcc-4.9/0bbca274a31c2366414d8d3f95e03d1c4674d93f/0"
>> job_file: "/lkp/scheduled/lkp-u410/bisect_piglit-igt-036-debian-x86_64-2015-02-07.cgz-x86_64-rhel-0bbca274a31c2366414d8d3f95e03d1c4674d93f-20160312-31710-1ckf79s-0.yaml"
>> max_uptime: 1800
>> initrd: "/osimage/debian/debian-x86_64-2015-02-07.cgz"
>> bootloader_append:
>> - root=/dev/ram0
>> - user=lkp
>> - job=/lkp/scheduled/lkp-u410/bisect_piglit-igt-036-debian-x86_64-2015-02-07.cgz-x86_64-rhel-0bbca274a31c2366414d8d3f95e03d1c4674d93f-20160312-31710-1ckf79s-0.yaml
>> - ARCH=x86_64
>> - kconfig=x86_64-rhel
>> - branch=linux-devel/devel-hourly-2016031201
>> - commit=0bbca274a31c2366414d8d3f95e03d1c4674d93f
>> - BOOT_IMAGE=/pkg/linux/x86_64-rhel/gcc-4.9/0bbca274a31c2366414d8d3f95e03d1c4674d93f/vmlinuz-4.5.0-rc7-00002-g0bbca27
>> - max_uptime=1800
>> - RESULT_ROOT=/result/piglit/igt-036/lkp-u410/debian-x86_64-2015-02-07.cgz/x86_64-rhel/gcc-4.9/0bbca274a31c2366414d8d3f95e03d1c4674d93f/0
>> - LKP_SERVER=inn
>> - |2-
>>
>>
>> earlyprintk=ttyS0,115200 systemd.log_level=err
>> debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100
>> panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic load_ramdisk=2 prompt_ramdisk=0
>> console=ttyS0,115200 console=tty0 vga=normal
>>
>> rw
>> lkp_initrd: "/lkp/lkp/lkp-x86_64.cgz"
>> modules_initrd: "/pkg/linux/x86_64-rhel/gcc-4.9/0bbca274a31c2366414d8d3f95e03d1c4674d93f/modules.cgz"
>> bm_initrd: "/osimage/deps/debian-x86_64-2015-02-07.cgz/lkp.cgz,/osimage/deps/debian-x86_64-2015-02-07.cgz/run-ipconfig.cgz,/osimage/deps/debian-x86_64-2015-02-07.cgz/piglit.cgz,/lkp/benchmarks/piglit.cgz"
>> linux_headers_initrd: "/pkg/linux/x86_64-rhel/gcc-4.9/0bbca274a31c2366414d8d3f95e03d1c4674d93f/linux-headers.cgz"
>> repeat_to: 2
>> kernel: "/pkg/linux/x86_64-rhel/gcc-4.9/0bbca274a31c2366414d8d3f95e03d1c4674d93f/vmlinuz-4.5.0-rc7-00002-g0bbca27"
>> dequeue_time: 2016-03-12 08:14:04.556438362 +08:00
>> job_state: finished
>> loadavg: 0.81 0.38 0.15 1/116 693
>> start_time: '1457741713'
>> end_time: '1457741864'
>> version: "/lkp/lkp/.src-20160311-183612"
>
>> 2016-03-12 08:15:13 piglit run igt -t igt/kms_cursor_crc/cursor-64-sliding /tmp/lkp/piglit-results
>> 2016-03-12 08:17:43 piglit summary console /tmp/lkp/piglit-results/results.json
>
>
>--
>Ville Syrjälä
>Intel OTC
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