Re: [GSoC] Git Blog 4

ZheNing Hu [off-list ref] 于2021年6月15日周二 下午4:59写道：

quoted

In the cover letter of your patch series you say:

"There is still an unresolved issue: performance overhead is very large, so
that when we use:

git cat-file --batch --batch-all-objects >/dev/null

on git.git, it may fail."

Is this the same issue? Is it only a memory issue, or is your patch
series also making things slower?

Yes, they are talking about the same thing, the memory usage is too large.
Of course I should check for memory leaks first. However, this is mainly
caused by changes in the strategy of cat-file printing object data.

In fact, it is indeed a problem caused by a memory leak: batch_object_write()
forget to free the ref_array_item->value. After solving the problem, although
the performance of `git cat-file --batch-all-objects --batch` is still poor, at
least there will be no triggering the oom killer.

--
ZheNing Hu