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Posted to dev@tomcat.apache.org by Christopher Schultz <ch...@christopherschultz.net> on 2019/04/25 19:08:09 UTC
Re: [OT] Finally getting around to switching to Git
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Igal,
On 4/25/19 14:42, Igal Sapir wrote:
> On 4/25/2019 11:30 AM, Coty Sutherland wrote:
>> If you clone a single branch with no references such as `git
>> clone apache/tomcat -b master --single-branch` then you get just
>> the references/history for the master branch which results in
>> about a 70M .git directory.
>
> So one needs to consider whether that added layer of complexity is
> worth the savings of 30M disk space, even when multiplied over 3
> branches. Imagine the reclaimed space after deleting the local SVN
> directories ;)
For Tomcat 8.5.x @ r1852558:
$ du -hs .svn/
41M .svn/
- -chris
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Re: [OT] Finally getting around to switching to Git
Posted by Igal Sapir <is...@apache.org>.
Chris,
On 4/29/2019 12:18 PM, Christopher Schultz wrote:
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> Hash: SHA256
>
> Igal,
>
> On 4/29/19 14:52, Igal Sapir wrote:
>> Chris,
>>
>> On Thu, Apr 25, 2019 at 12:08 PM Christopher Schultz <
>> chris@christopherschultz.net> wrote:
>>
>>> -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256
>>>
>>> Igal,
>>>
>>> On 4/25/19 14:42, Igal Sapir wrote:
>>>> On 4/25/2019 11:30 AM, Coty Sutherland wrote:
>>>>> If you clone a single branch with no references such as `git
>>>>> clone apache/tomcat -b master --single-branch` then you get
>>>>> just the references/history for the master branch which
>>>>> results in about a 70M .git directory.
>>>> So one needs to consider whether that added layer of complexity
>>>> is worth the savings of 30M disk space, even when multiplied
>>>> over 3 branches. Imagine the reclaimed space after deleting the
>>>> local SVN directories ;)
>>> For Tomcat 8.5.x @ r1852558:
>>>
>>> $ du -hs .svn/ 41M .svn/
>> Are you sure that you have the whole history there? I am working
>> ATM on my Ubuntu workstation where I have a copy of the Tomcat 8.5
>> SVN. The disk usage is mostly in the tags directory and not in the
>> .svn:
>>
>> ux@u18:/workspace/src/tc8.5.x$ du -sh tags 1.2G tags
>> ux@u18:/workspace/src/tc8.5.x$ du -sh .svn 231M .svn
>> ux@u18:/workspace/src/tc8.5.x$ du -sh . 1.5G .
> Oh, heavens no. Checking-out the root of a project in svn is almost
> never a good idea. I've literally never checked-out /svn/[project]. I
> always check-out /svn/[project]/trunk or /svn/[project]/tags/[branch].
> Never even in private repositories, for the same reason: there is no
> reason ever to grab every tag and branch ever onto your own disk.
>
> Subversion is efficient on the server-side, but the client is dumb and
> will happily duplicate everything.
>
>> Each "tag" takes about 35MB:
>>
>> ux@u18:/workspace/src/tc8.5.x$ du -sh tags/TOMCAT_8_5_25 35M
>> tags/TOMCAT_8_5_25 ux@u18:/workspace/src/tc8.5.x$ du -sh
>> tags/TOMCAT_8_5_24 35M tags/TOMCAT_8_5_24
>> ux@u18:/workspace/src/tc8.5.x$ du -sh tags/TOMCAT_8_5_23 34M
>> tags/TOMCAT_8_5_23
> Yeah, you should never have grabbed those. It was a waste of time and
> disk space (and back-up time and disk space).
And now I know ;) I was actually banned from the apache.org network at
some point because downloading the whole Tomcat SVN repo used too many
requests per day.
But this was exactly my point when comparing SVN to Git. Your Git
repository of 80MB includes all of the history with all of the branches
and tags, so it's tiny compared to the gigabytes that SVN uses (1.5GB
for only tc8.5).
We are using Lightweight Tags [1] in Git so they barely take any disk space.
Igal
[1] https://git-scm.com/book/en/v2/Git-Basics-Tagging#_lightweight_tags
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Re: [OT] Finally getting around to switching to Git
Posted by Christopher Schultz <ch...@christopherschultz.net>.
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Igal,
On 4/29/19 14:52, Igal Sapir wrote:
> Chris,
>
> On Thu, Apr 25, 2019 at 12:08 PM Christopher Schultz <
> chris@christopherschultz.net> wrote:
>
>> -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256
>>
>> Igal,
>>
>> On 4/25/19 14:42, Igal Sapir wrote:
>>> On 4/25/2019 11:30 AM, Coty Sutherland wrote:
>>>> If you clone a single branch with no references such as `git
>>>> clone apache/tomcat -b master --single-branch` then you get
>>>> just the references/history for the master branch which
>>>> results in about a 70M .git directory.
>>>
>>> So one needs to consider whether that added layer of complexity
>>> is worth the savings of 30M disk space, even when multiplied
>>> over 3 branches. Imagine the reclaimed space after deleting the
>>> local SVN directories ;)
>>
>> For Tomcat 8.5.x @ r1852558:
>>
>> $ du -hs .svn/ 41M .svn/
>>
>>
> Are you sure that you have the whole history there? I am working
> ATM on my Ubuntu workstation where I have a copy of the Tomcat 8.5
> SVN. The disk usage is mostly in the tags directory and not in the
> .svn:
>
> ux@u18:/workspace/src/tc8.5.x$ du -sh tags 1.2G tags
> ux@u18:/workspace/src/tc8.5.x$ du -sh .svn 231M .svn
> ux@u18:/workspace/src/tc8.5.x$ du -sh . 1.5G .
Oh, heavens no. Checking-out the root of a project in svn is almost
never a good idea. I've literally never checked-out /svn/[project]. I
always check-out /svn/[project]/trunk or /svn/[project]/tags/[branch].
Never even in private repositories, for the same reason: there is no
reason ever to grab every tag and branch ever onto your own disk.
Subversion is efficient on the server-side, but the client is dumb and
will happily duplicate everything.
> Each "tag" takes about 35MB:
>
> ux@u18:/workspace/src/tc8.5.x$ du -sh tags/TOMCAT_8_5_25 35M
> tags/TOMCAT_8_5_25 ux@u18:/workspace/src/tc8.5.x$ du -sh
> tags/TOMCAT_8_5_24 35M tags/TOMCAT_8_5_24
> ux@u18:/workspace/src/tc8.5.x$ du -sh tags/TOMCAT_8_5_23 34M
> tags/TOMCAT_8_5_23
Yeah, you should never have grabbed those. It was a waste of time and
disk space (and back-up time and disk space).
- -chris
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Re: [OT] Finally getting around to switching to Git
Posted by Igal Sapir <ig...@lucee.org>.
Chris,
On Thu, Apr 25, 2019 at 12:08 PM Christopher Schultz <
chris@christopherschultz.net> wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA256
>
> Igal,
>
> On 4/25/19 14:42, Igal Sapir wrote:
> > On 4/25/2019 11:30 AM, Coty Sutherland wrote:
> >> If you clone a single branch with no references such as `git
> >> clone apache/tomcat -b master --single-branch` then you get just
> >> the references/history for the master branch which results in
> >> about a 70M .git directory.
> >
> > So one needs to consider whether that added layer of complexity is
> > worth the savings of 30M disk space, even when multiplied over 3
> > branches. Imagine the reclaimed space after deleting the local SVN
> > directories ;)
>
> For Tomcat 8.5.x @ r1852558:
>
> $ du -hs .svn/
> 41M .svn/
>
>
Are you sure that you have the whole history there? I am working ATM on my
Ubuntu workstation where I have a copy of the Tomcat 8.5 SVN. The disk
usage is mostly in the tags directory and not in the .svn:
ux@u18:/workspace/src/tc8.5.x$ du -sh tags
1.2G tags
ux@u18:/workspace/src/tc8.5.x$ du -sh .svn
231M .svn
ux@u18:/workspace/src/tc8.5.x$ du -sh .
1.5G .
Each "tag" takes about 35MB:
ux@u18:/workspace/src/tc8.5.x$ du -sh tags/TOMCAT_8_5_25
35M tags/TOMCAT_8_5_25
ux@u18:/workspace/src/tc8.5.x$ du -sh tags/TOMCAT_8_5_24
35M tags/TOMCAT_8_5_24
ux@u18:/workspace/src/tc8.5.x$ du -sh tags/TOMCAT_8_5_23
34M tags/TOMCAT_8_5_23
Igal
Re: [OT] Finally getting around to switching to Git
Posted by Igal Sapir <is...@apache.org>.
Chris,
On 4/25/2019 12:08 PM, Christopher Schultz wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA256
>
> Igal,
>
> On 4/25/19 14:42, Igal Sapir wrote:
>> On 4/25/2019 11:30 AM, Coty Sutherland wrote:
>>> If you clone a single branch with no references such as `git
>>> clone apache/tomcat -b master --single-branch` then you get just
>>> the references/history for the master branch which results in
>>> about a 70M .git directory.
>> So one needs to consider whether that added layer of complexity is
>> worth the savings of 30M disk space, even when multiplied over 3
>> branches. Imagine the reclaimed space after deleting the local SVN
>> directories ;)
> For Tomcat 8.5.x @ r1852558:
>
> $ du -hs .svn/
> 41M .svn/
Interesting. Maybe the tomcat-site SVN repo threw me off. I didn't
bother to look at the breakdown of the project and the site:
E:\Workspace\svn\tomcat\tomcat
> du -sh .
85M
E:\Workspace\svn\tomcat\tomcat
> cd ../site
E:\Workspace\svn\tomcat\site
> du -sh .
1.4G
Anyway, good to know. Thanks,
Igal
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