MySQL Forums
Forum List  »  Backup

Re: Painfully slow import
Posted by: George Develekos
Date: July 19, 2020 07:10AM

I have now inserted all these settings at the top of the decompressed .sql file, which is 556GB.

The import is running slightly "faster". Looking at the .ibd files, 45MB are written per FIVE MINUTES!! Utterly ridiculous.

The IOTOP utility reports mysqld writing 7-15MB/sec.

IO wait time is at 1.6%.

LSOF reports that msyqld writes on all the expected files, i.e. my DB files plus ibdata1 plus a bit of activity in the mysql DB, i.e. nothing peculiar.

So where is all this writing activity going into????

This is one of the greatest mysteries I've seen in my 25+ years of professional life.

Has anyone seen a mysql import run so slow, I wonder....

Options: ReplyQuote


Subject
Views
Written By
Posted
873
July 17, 2020 03:37AM
336
July 17, 2020 11:36AM
370
July 17, 2020 11:53AM
312
July 17, 2020 12:18PM
324
July 17, 2020 12:26PM
294
July 17, 2020 03:35PM
Re: Painfully slow import
308
July 19, 2020 07:10AM
292
July 19, 2020 11:57AM
313
July 19, 2020 01:00PM
331
July 19, 2020 01:48PM
301
July 19, 2020 02:48PM


Sorry, you can't reply to this topic. It has been closed.

Content reproduced on this site is the property of the respective copyright holders. It is not reviewed in advance by Oracle and does not necessarily represent the opinion of Oracle or any other party.