Seems that git receive-pack only takes 1 seconds. After that, git rev-list takes the most time, I don't know what is it doing -----Original Message----- From: Jeff King <peff@xxxxxxxx> Sent: Wednesday, October 13, 2021 5:39 AM To: 程洋 <chengyang@xxxxxxxxxx> Cc: git@xxxxxxxxxxxxxxx Subject: Re: [External Mail]Re: why git is so slow for a tiny git push? *This message originated from outside of XIAOMI. Please treat this email with caution* On Tue, Oct 12, 2021 at 09:08:08AM +0000, 程洋 wrote: > Jesus. It works for me. After disable writebitmap, time cost decrease > from 33 seconds to 0.9 seconds. > > But now it turns out that, remote side takes 13 seconds to receive the > pack, since git receive-pack is triggered automatically from remote > side, is there anyway to enable GIT_TRACE2_PERF on server side? For the environment variable, it depends on your protocol. If you can push over ssh (and the other side lets you execute arbitrary commands), then: git push --receive-pack='GIT_TRACE2_PERF=/tmp/foo.trace git-receive-pack' Otherwise, you can look at setting the trace2.perfTarget config option on the server side. I haven't played with it myself before. -Peff #/******本邮件及其附件含有小米公司的保密信息，仅限于发送给上面地址中列出的个人或群组。禁止任何其他人以任何形式使用（包括但不限于全部或部分地泄露、复制、或散发）本邮件中的信息。如果您错收了本邮件，请您立即电话或邮件通知发件人并删除本邮件！ This e-mail and its attachments contain confidential information from XIAOMI, which is intended only for the person or entity whose address is listed above. Any use of the information contained herein in any way (including, but not limited to, total or partial disclosure, reproduction, or dissemination) by persons other than the intended recipient(s) is prohibited. If you receive this e-mail in error, please notify the sender by phone or email immediately and delete it!******/#
