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 Topic: time to restart |
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sailor
Joined: 17 Apr 2015
Posts: 82
Location: US
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 Posted: Wed 10 Mar '21 12:38 Post subject: time to restart |
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| I often find that the time to restart seems "long". It takes about a minute. I do use cronolog and can see some instances using 4 gigs of RAM. Most of mine are VMWare with two or four cpus on Windows 2012R2 to 2016. Most are only 1 host with local MySQL and Wordpress. IS that normal? |
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James Blond
Moderator
Joined: 19 Jan 2006
Posts: 7371
Location: Germany, Next to Hamburg
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| Posted: Wed 10 Mar '21 13:36 Post subject: |
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| The restart time of apache? Your VM? If it is apache how do you restart it? |
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tangent
Moderator
Joined: 16 Aug 2020
Posts: 348
Location: UK
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| Posted: Thu 11 Mar '21 0:42 Post subject: |
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Are you performing a hard or graceful restart? The latter will wait for existing connections to complete and close before restarting, which will take time. Although faster, a hard restart will sever user connections.
The kernel will also need to flush pending output from Cronolog, as much as any other Apache logging method, when the processes are being terminated. |
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sailor
Joined: 17 Apr 2015
Posts: 82
Location: US
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| Posted: Fri 12 Mar '21 16:22 Post subject: |
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I'm referring to restarting via the Apache service.
So, if it's a busy server, it may take a while? |
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tangent
Moderator
Joined: 16 Aug 2020
Posts: 348
Location: UK
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| Posted: Fri 12 Mar '21 20:55 Post subject: |
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On Windows, the Apache service restart process currently entails a graceful shutdown. There are a number of posts on the net that suggest this is the case, but the safest way to verify this is to look at the Apache code.
If you look in server\mpm\winnt\mpm_winnt.c we find the following comment in the ap_signal_parent() function..
| Code: | | /* This MPM supports only graceful restarts right now */ |
So this explains your lengthy, controlled restarts. |
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