| 2016-05-16 11:04:52 |
Alexandru Avadanii |
bug |
|
|
added bug |
| 2016-05-16 11:04:52 |
Alexandru Avadanii |
attachment added |
|
AArch64-cpuinfo-Remove-redundant-cpu-caps-loop.patch https://bugs.launchpad.net/bugs/1582181/+attachment/4663771/+files/AArch64-cpuinfo-Remove-redundant-cpu-caps-loop.patch |
|
| 2016-05-16 12:34:09 |
Ubuntu Foundations Team Bug Bot |
tags |
|
patch |
|
| 2016-05-16 12:34:16 |
Ubuntu Foundations Team Bug Bot |
bug |
|
|
added subscriber Ubuntu Review Team |
| 2017-09-08 18:45:48 |
Launchpad Janitor |
lshw (Ubuntu): status |
New |
Confirmed |
|
| 2018-02-27 13:00:05 |
Alexandru Avadanii |
bug |
|
|
added subscriber dann frazier |
| 2018-02-27 15:05:07 |
dann frazier |
bug |
|
|
added subscriber Ike Panhc |
| 2018-03-21 06:05:35 |
Ike Panhc |
lshw (Ubuntu): status |
Confirmed |
In Progress |
|
| 2018-03-21 06:05:38 |
Ike Panhc |
lshw (Ubuntu): assignee |
|
Ike Panhc (ikepanhc) |
|
| 2018-03-21 06:06:30 |
Ike Panhc |
nominated for series |
|
Ubuntu Bionic |
|
| 2018-03-21 06:06:30 |
Ike Panhc |
nominated for series |
|
Ubuntu Artful |
|
| 2018-03-21 06:06:30 |
Ike Panhc |
nominated for series |
|
Ubuntu Xenial |
|
| 2018-03-21 08:19:07 |
Ike Panhc |
description |
lshw on AArch64 hardware is painfully slow.
This affects both lshw in current Ubuntu releases and vanilla upstream.
For a 48 core node, cpuinfo parsing added up to 30 seconds (8 lines
per core in /proc/cpuinfo add up to 384 lines to parse).
For a 96 core node, parsing took up to 5 minutes (!).
I think the problem was introduced by [1], and can be summarized as:
- CPU capabilities should be added only to the current CPU core,
and NOT to all previous CPU cores parsed.
My suggestion is dropping the loop in [1], thus calling the <addHint>
and <describeCapability> only for currentcpu.
I put together a small patch (basically removing the for loop in question)
at [2] (or see attachement), which should be applied on top of version
"02.16-2ubuntu1.3" from Ubuntu Trusty 14.04.
After applying the patch at [2], parsing for the above system (48 cores)
takes less than 1 second (instead of 30s), with the exact same results ...
[1] https://github.com/lyonel/lshw/commit/beb89de5a3c10449fe73f1c77b2486d868e5bc9a#diff-f4010714738fa4cdd5999499579da2b3R217
[2] http://paste.ubuntu.com/16456620/
# lsb_release -rd
Description: Ubuntu 14.04.4 LTS
Release: 14.04
BR,
Alex |
lshw on AArch64 hardware is painfully slow.
This affects both lshw in current Ubuntu releases and vanilla upstream.
For a 48 core node, cpuinfo parsing added up to 30 seconds (8 lines
per core in /proc/cpuinfo add up to 384 lines to parse).
For a 96 core node, parsing took up to 5 minutes (!).
I think the problem was introduced by [1], and can be summarized as:
- CPU capabilities should be added only to the current CPU core,
and NOT to all previous CPU cores parsed.
My suggestion is dropping the loop in [1], thus calling the <addHint>
and <describeCapability> only for currentcpu.
I put together a small patch (basically removing the for loop in question)
at [2] (or see attachement), which should be applied on top of version
"02.16-2ubuntu1.3" from Ubuntu Trusty 14.04.
After applying the patch at [2], parsing for the above system (48 cores)
takes less than 1 second (instead of 30s), with the exact same results ...
[1] https://github.com/lyonel/lshw/commit/beb89de5a3c10449fe73f1c77b2486d868e5bc9a#diff-f4010714738fa4cdd5999499579da2b3R217
[2] http://paste.ubuntu.com/16456620/
# lsb_release -rd
Description: Ubuntu 14.04.4 LTS
Release: 14.04
BR,
Alex
[Impact]
lshw takes too long time on parsing /proc/cpuinfo on aarch64 system
It takes minutes on 96cores and almost 10min on 224cores system.
[Test Case]
`time sudo lshw` and it shall be less then 15sec
[Regression Potential]
This patch only affect code for aarch64. No regression possible on other aarch64 and has been tested on aarch64
[Other Info]
Patch has been merged into upstream branch.
https://github.com/lyonel/lshw/commit/20cda77239e8604e798b87a0441e694edb0214d1 |
|
| 2018-03-21 08:20:16 |
Ike Panhc |
description |
lshw on AArch64 hardware is painfully slow.
This affects both lshw in current Ubuntu releases and vanilla upstream.
For a 48 core node, cpuinfo parsing added up to 30 seconds (8 lines
per core in /proc/cpuinfo add up to 384 lines to parse).
For a 96 core node, parsing took up to 5 minutes (!).
I think the problem was introduced by [1], and can be summarized as:
- CPU capabilities should be added only to the current CPU core,
and NOT to all previous CPU cores parsed.
My suggestion is dropping the loop in [1], thus calling the <addHint>
and <describeCapability> only for currentcpu.
I put together a small patch (basically removing the for loop in question)
at [2] (or see attachement), which should be applied on top of version
"02.16-2ubuntu1.3" from Ubuntu Trusty 14.04.
After applying the patch at [2], parsing for the above system (48 cores)
takes less than 1 second (instead of 30s), with the exact same results ...
[1] https://github.com/lyonel/lshw/commit/beb89de5a3c10449fe73f1c77b2486d868e5bc9a#diff-f4010714738fa4cdd5999499579da2b3R217
[2] http://paste.ubuntu.com/16456620/
# lsb_release -rd
Description: Ubuntu 14.04.4 LTS
Release: 14.04
BR,
Alex
[Impact]
lshw takes too long time on parsing /proc/cpuinfo on aarch64 system
It takes minutes on 96cores and almost 10min on 224cores system.
[Test Case]
`time sudo lshw` and it shall be less then 15sec
[Regression Potential]
This patch only affect code for aarch64. No regression possible on other aarch64 and has been tested on aarch64
[Other Info]
Patch has been merged into upstream branch.
https://github.com/lyonel/lshw/commit/20cda77239e8604e798b87a0441e694edb0214d1 |
lshw on AArch64 hardware is painfully slow.
This affects both lshw in current Ubuntu releases and vanilla upstream.
For a 48 core node, cpuinfo parsing added up to 30 seconds (8 lines
per core in /proc/cpuinfo add up to 384 lines to parse).
For a 96 core node, parsing took up to 5 minutes (!).
I think the problem was introduced by [1], and can be summarized as:
- CPU capabilities should be added only to the current CPU core,
and NOT to all previous CPU cores parsed.
My suggestion is dropping the loop in [1], thus calling the <addHint>
and <describeCapability> only for currentcpu.
I put together a small patch (basically removing the for loop in question)
at [2] (or see attachement), which should be applied on top of version
"02.16-2ubuntu1.3" from Ubuntu Trusty 14.04.
After applying the patch at [2], parsing for the above system (48 cores)
takes less than 1 second (instead of 30s), with the exact same results ...
[1] https://github.com/lyonel/lshw/commit/beb89de5a3c10449fe73f1c77b2486d868e5bc9a#diff-f4010714738fa4cdd5999499579da2b3R217
[2] http://paste.ubuntu.com/16456620/
# lsb_release -rd
Description: Ubuntu 14.04.4 LTS
Release: 14.04
BR,
Alex
[Impact]
lshw takes too long time on parsing /proc/cpuinfo on aarch64 system
It takes minutes on 96cores and almost 10min on 224cores system.
[Test Case]
`time sudo lshw` and it shall be less then 15sec
[Regression Potential]
This patch only affect code for aarch64. Lowest regression rick on other arch and has been tested on aarch64
[Other Info]
Patch has been merged into upstream branch.
https://github.com/lyonel/lshw/commit/20cda77239e8604e798b87a0441e694edb0214d1 |
|
| 2018-03-21 08:21:05 |
Ike Panhc |
description |
lshw on AArch64 hardware is painfully slow.
This affects both lshw in current Ubuntu releases and vanilla upstream.
For a 48 core node, cpuinfo parsing added up to 30 seconds (8 lines
per core in /proc/cpuinfo add up to 384 lines to parse).
For a 96 core node, parsing took up to 5 minutes (!).
I think the problem was introduced by [1], and can be summarized as:
- CPU capabilities should be added only to the current CPU core,
and NOT to all previous CPU cores parsed.
My suggestion is dropping the loop in [1], thus calling the <addHint>
and <describeCapability> only for currentcpu.
I put together a small patch (basically removing the for loop in question)
at [2] (or see attachement), which should be applied on top of version
"02.16-2ubuntu1.3" from Ubuntu Trusty 14.04.
After applying the patch at [2], parsing for the above system (48 cores)
takes less than 1 second (instead of 30s), with the exact same results ...
[1] https://github.com/lyonel/lshw/commit/beb89de5a3c10449fe73f1c77b2486d868e5bc9a#diff-f4010714738fa4cdd5999499579da2b3R217
[2] http://paste.ubuntu.com/16456620/
# lsb_release -rd
Description: Ubuntu 14.04.4 LTS
Release: 14.04
BR,
Alex
[Impact]
lshw takes too long time on parsing /proc/cpuinfo on aarch64 system
It takes minutes on 96cores and almost 10min on 224cores system.
[Test Case]
`time sudo lshw` and it shall be less then 15sec
[Regression Potential]
This patch only affect code for aarch64. Lowest regression rick on other arch and has been tested on aarch64
[Other Info]
Patch has been merged into upstream branch.
https://github.com/lyonel/lshw/commit/20cda77239e8604e798b87a0441e694edb0214d1 |
lshw on AArch64 hardware is painfully slow.
This affects both lshw in current Ubuntu releases and vanilla upstream.
For a 48 core node, cpuinfo parsing added up to 30 seconds (8 lines
per core in /proc/cpuinfo add up to 384 lines to parse).
For a 96 core node, parsing took up to 5 minutes (!).
I think the problem was introduced by [1], and can be summarized as:
- CPU capabilities should be added only to the current CPU core,
and NOT to all previous CPU cores parsed.
My suggestion is dropping the loop in [1], thus calling the <addHint>
and <describeCapability> only for currentcpu.
I put together a small patch (basically removing the for loop in question)
at [2] (or see attachement), which should be applied on top of version
"02.16-2ubuntu1.3" from Ubuntu Trusty 14.04.
After applying the patch at [2], parsing for the above system (48 cores)
takes less than 1 second (instead of 30s), with the exact same results ...
[1] https://github.com/lyonel/lshw/commit/beb89de5a3c10449fe73f1c77b2486d868e5bc9a#diff-f4010714738fa4cdd5999499579da2b3R217
[2] http://paste.ubuntu.com/16456620/
# lsb_release -rd
Description: Ubuntu 14.04.4 LTS
Release: 14.04
BR,
Alex
[Impact]
lshw takes too long time on parsing /proc/cpuinfo on aarch64 system
It takes minutes on 96cores and almost 10min on 224cores system.
[Test Case]
`time sudo lshw` and it shall be less then 15sec
[Regression Potential]
This patch only modifies codes for aarch64. Lowest regression rick on other arch and has been tested on aarch64
[Other Info]
Patch has been merged into upstream branch.
https://github.com/lyonel/lshw/commit/20cda77239e8604e798b87a0441e694edb0214d1 |
|
| 2018-03-21 17:58:43 |
dann frazier |
bug task added |
|
lshw (Ubuntu Artful) |
|
| 2018-03-21 17:59:01 |
dann frazier |
bug task added |
|
lshw (Ubuntu Xenial) |
|
| 2018-03-21 17:59:07 |
dann frazier |
bug task added |
|
lshw (Ubuntu Bionic) |
|
| 2018-03-21 17:59:57 |
dann frazier |
description |
lshw on AArch64 hardware is painfully slow.
This affects both lshw in current Ubuntu releases and vanilla upstream.
For a 48 core node, cpuinfo parsing added up to 30 seconds (8 lines
per core in /proc/cpuinfo add up to 384 lines to parse).
For a 96 core node, parsing took up to 5 minutes (!).
I think the problem was introduced by [1], and can be summarized as:
- CPU capabilities should be added only to the current CPU core,
and NOT to all previous CPU cores parsed.
My suggestion is dropping the loop in [1], thus calling the <addHint>
and <describeCapability> only for currentcpu.
I put together a small patch (basically removing the for loop in question)
at [2] (or see attachement), which should be applied on top of version
"02.16-2ubuntu1.3" from Ubuntu Trusty 14.04.
After applying the patch at [2], parsing for the above system (48 cores)
takes less than 1 second (instead of 30s), with the exact same results ...
[1] https://github.com/lyonel/lshw/commit/beb89de5a3c10449fe73f1c77b2486d868e5bc9a#diff-f4010714738fa4cdd5999499579da2b3R217
[2] http://paste.ubuntu.com/16456620/
# lsb_release -rd
Description: Ubuntu 14.04.4 LTS
Release: 14.04
BR,
Alex
[Impact]
lshw takes too long time on parsing /proc/cpuinfo on aarch64 system
It takes minutes on 96cores and almost 10min on 224cores system.
[Test Case]
`time sudo lshw` and it shall be less then 15sec
[Regression Potential]
This patch only modifies codes for aarch64. Lowest regression rick on other arch and has been tested on aarch64
[Other Info]
Patch has been merged into upstream branch.
https://github.com/lyonel/lshw/commit/20cda77239e8604e798b87a0441e694edb0214d1 |
[Impact]
lshw takes too long time on parsing /proc/cpuinfo on aarch64 system
It takes minutes on 96cores and almost 10min on 224cores system.
[Test Case]
`time sudo lshw` and it shall be less then 15sec
[Regression Potential]
This patch only modifies codes for aarch64. Lowest regression rick on other arch and has been tested on aarch64
[Other Info]
Patch has been merged into upstream branch.
https://github.com/lyonel/lshw/commit/20cda77239e8604e798b87a0441e694edb0214d1 |
|
| 2018-03-21 19:58:24 |
Launchpad Janitor |
lshw (Ubuntu Bionic): status |
In Progress |
Fix Released |
|
| 2018-03-22 17:15:52 |
Ike Panhc |
description |
[Impact]
lshw takes too long time on parsing /proc/cpuinfo on aarch64 system
It takes minutes on 96cores and almost 10min on 224cores system.
[Test Case]
`time sudo lshw` and it shall be less then 15sec
[Regression Potential]
This patch only modifies codes for aarch64. Lowest regression rick on other arch and has been tested on aarch64
[Other Info]
Patch has been merged into upstream branch.
https://github.com/lyonel/lshw/commit/20cda77239e8604e798b87a0441e694edb0214d1 |
[Impact]
lshw takes too long time on parsing /proc/cpuinfo on aarch64 system
It takes minutes on 96cores and almost 10min on 224cores system.
[Test Case]
`time lshw` and it shall be less then 15sec
[Regression Potential]
This patch only modifies codes for aarch64. Lowest regression rick on other arch and has been tested on aarch64
[Other Info]
Patch has been merged into upstream branch.
https://github.com/lyonel/lshw/commit/20cda77239e8604e798b87a0441e694edb0214d1 |
|
| 2018-03-22 19:26:48 |
Brian Murray |
lshw (Ubuntu Artful): status |
New |
Fix Committed |
|
| 2018-03-22 19:26:52 |
Brian Murray |
bug |
|
|
added subscriber Ubuntu Stable Release Updates Team |
| 2018-03-22 19:26:55 |
Brian Murray |
bug |
|
|
added subscriber SRU Verification |
| 2018-03-22 19:27:00 |
Brian Murray |
tags |
patch |
patch verification-needed verification-needed-artful |
|
| 2018-03-22 19:29:02 |
Brian Murray |
lshw (Ubuntu Xenial): status |
New |
Fix Committed |
|
| 2018-03-22 19:29:08 |
Brian Murray |
tags |
patch verification-needed verification-needed-artful |
patch verification-needed verification-needed-artful verification-needed-xenial |
|
| 2018-03-26 03:33:24 |
Ike Panhc |
tags |
patch verification-needed verification-needed-artful verification-needed-xenial |
patch verification-done-xenial verification-needed verification-needed-artful |
|
| 2018-03-26 03:33:31 |
Ike Panhc |
lshw (Ubuntu Artful): assignee |
|
Ike Panhc (ikepanhc) |
|
| 2018-03-26 03:33:32 |
Ike Panhc |
lshw (Ubuntu Xenial): assignee |
|
Ike Panhc (ikepanhc) |
|
| 2018-03-26 04:12:36 |
Ike Panhc |
tags |
patch verification-done-xenial verification-needed verification-needed-artful |
patch verification-done verification-done-artful verification-done-xenial |
|
| 2018-03-29 21:43:53 |
Brian Murray |
removed subscriber Ubuntu Stable Release Updates Team |
|
|
|
| 2018-03-29 21:44:38 |
Launchpad Janitor |
lshw (Ubuntu Xenial): status |
Fix Committed |
Fix Released |
|
| 2018-03-29 21:53:54 |
Launchpad Janitor |
lshw (Ubuntu Artful): status |
Fix Committed |
Fix Released |
|
