Serena Williams is unfazed by the prospect of playing on four successive days in order to defend her French Open title.

After her fourth-round tie with Elina Svitolina was pushed back from Monday to Wednesday due to rain, Williams faces a hectic schedule in week two of the year's second grand slam.

The world number one thumped Svitolina 6-1 6-1 to set up a quarter-final tie against the unseeded Yulia Putintseva. That match will take place on Thursday, with the winner due to be in semi-final action 24 hours later ahead of Saturday's final.

"You know, when we play regular tournaments you play four, five matches in a row," said Williams.

"It's what happens. In Rome I played four in a row? Five? I don't know.

"In Miami and Indian Wells you just play every day. It's something you just get used to. It's totally fine, I think, for me and for everyone.

"I'm sure it was really tricky [on Tuesday] and must have been really difficult to keep warming up and keep going, going, going. I was really fortunate to get my match in and out today, so that worked out well."

Williams delivered a commanding performance against 18th seed Svitolina, racing into a 4-0 lead inside 12 minutes to set the tone for a one-sided encounter.

"I feel it was a better match for me," said the reigning champion, who had been below her brilliant best against Kristina Mladenovic in round three.

"She [Svitolina] is a really good player. She gets a lot of balls back."