Good day. Recently, I started to have osTicket lags, the site simply did not open for a while. I didn't attach much importance to this, but this problem began to appear over and over again. I checked the logs and found Sql queries that take a long time to execute. Apparently the site lags because of this. I attach my logs, is there a possibility to somehow restore the system's performance?

SELECTidFROM ost_file A1 WHERE (A1.ft = 'T' AND A1.created < NOW() - INTERVAL 1 DAY) AND NOT EXISTS (SELECT id FROM ost_attachment A2 WHERE A1.id= A2.file_id`)
88227 a141427_support
localhost a141427_support

Query 00:14:57 DELETE ost_attachment.* FROM ost_attachment JOIN ost_draft A1 ON (ost_attachment.type = 'D' AND ost_attachment.object_id = A1.id) WHERE A1.namespace LIKE 'ticket.\%.16870%'
88235 a141427_support
localhost a141427_support

Query 00:13:29 SELECT A3.staff_id AS lock__staff_id, A1.staff_id AS staff_id, A1.isoverdue AS isoverdue, A1.team_id AS team_id, A1.ticket_id AS ticket_id, A1.number AS number, A4.subject AS cdata__subject, A6.address AS user__default_email__address, A1.source AS source, A7.priority_color AS cdata__:priority__priority_color, A7.priority_desc AS cdata__:priority__priority_desc, A1.status_id AS status_id, A8.name AS status__name, A8.state AS status__state, A1.dept_id AS dept_id, B0.name AS dept__name, A5.name AS user__name, A1.lastupdate AS lastupdate, A1.isanswered AS isanswered, B1.firstname AS staff__firstname, B1.lastname AS staff__lastname, B2.name AS team__name, (SELECT COUNT(R0.id) AS count FROM ost_thread Q7 JOIN ost_ticket Q8 ON (Q7.object_type = 'T' AND Q7.object_id = Q8.ticket_id) LEFT JOIN ost_thread_collaborator R0 ON (Q7.id = R0.thread_id) WHERE Q8.ticket_id = A1.ticket_id) AS collab_count, (SELECT COUNT(R1.id) AS count FROM ost_thread Q7 JOIN ost_ticket Q8 ON (Q7.object_type = 'T' AND Q7.object_id = Q8.ticket_id) LEFT JOIN ost_thread_entry R0 ON (Q7.id = R0.thread_id) LEFT JOIN ost_attachment R1 ON (R1.type = 'H' AND R0.id = R1.object_id) WHERE Q8.ticket_id = A1.ticket_id AND R1.inline = 0) AS attachment_count, (SELECT COUNT(R0.id) AS count FROM ost_thread Q7 JOIN ost_ticket Q8 ON (Q7.object_type = 'T' AND Q7.object_id = Q8.ticket_id) LEFT JOIN ost_thread_entry R0 ON (Q7.id = R0.thread_id) WHERE Q8.ticket_id = A1.ticket_id AND NOT R0.flags & 4 != 0) AS thread_count FROM ost_ticket A1 JOIN (SELECT Q7.ticket_id FROM ost_ticket Q7 JOIN ost_ticket_status Q8 ON (Q7.status_id = Q8.id) WHERE (Q7.staff_id = 16 OR (Q7.staff_id = 0 AND Q7.team_id > 0)) AND Q8.state = 'open' AND ((Q8.state = 'open' AND (Q7.staff_id = 16 OR Q7.team_id IN (2))) OR Q7.dept_id IN ('3')) ORDER BY Q7.lastupdate DESC LIMIT 21) A2 LEFT JOIN ost_lock A3 ON (A1.lock_id = A3.lock_id AND A3.expire > NOW()) LEFT JOIN ost_ticket__cdata A4 ON (A1.ticket_id = A4.ticket_id) JOIN ost_user A5 ON (A1.user_id = A5.id) LEFT JOIN ost_user_email A6 ON (A5.default_email_id = A6.id) LEFT JOIN ost_ticket_priority A7 ON (A4.priority = A7.priority_id) JOIN ost_ticket_status A8 ON (A1.status_id = A8.id) JOIN ost_department B0 ON (A1.dept_id = B0.id) LEFT JOIN ost_staff B1 ON (A1.staff_id = B1.staff_id) LEFT JOIN ost_team B2 ON (A1.team_id = B2.team_id) WHERE A1.ticket_id = A2.ticket_id GROUP BY A3.staff_id, A1.staff_id, A1.isoverdue, A1.team_id, A1.ticket_id, A1.number, A4.subject, A6.address, A1.source, A7.priority_color, A7.priority_desc, A1.status_id, A8.name, A8.state, A1.dept_id, B0.name, A5.name, A1.lastupdate, A1.isanswered, B1.firstname, B1.lastname, B2.name ORDER BY A1.lastupdate DESC
88238 a141427_support
localhost a141427_support

Query 00:13:19 SELECT A3.staff_id AS lock__staff_id, A1.staff_id AS staff_id, A1.isoverdue AS isoverdue, A1.team_id AS team_id, A1.ticket_id AS ticket_id, A1.number AS number, A4.subject AS cdata__subject, A6.address AS user__default_email__address, A1.source AS source, A7.priority_color AS cdata__:priority__priority_color, A7.priority_desc AS cdata__:priority__priority_desc, A1.status_id AS status_id, A8.name AS status__name, A8.state AS status__state, A1.dept_id AS dept_id, B0.name AS dept__name, A5.name AS user__name, A1.lastupdate AS lastupdate, A1.isanswered AS isanswered, B1.firstname AS staff__firstname, B1.lastname AS staff__lastname, B2.name AS team__name, (SELECT COUNT(R0.id) AS count FROM ost_thread Q7 JOIN ost_ticket Q8 ON (Q7.object_type = 'T' AND Q7.object_id = Q8.ticket_id) LEFT JOIN ost_thread_collaborator R0 ON (Q7.id = R0.thread_id) WHERE Q8.ticket_id = A1.ticket_id) AS collab_count, (SELECT COUNT(R1.id) AS count FROM ost_thread Q7 JOIN ost_ticket Q8 ON (Q7.object_type = 'T' AND Q7.object_id = Q8.ticket_id) LEFT JOIN ost_thread_entry R0 ON (Q7.id = R0.thread_id) LEFT JOIN ost_attachment R1 ON (R1.type = 'H' AND R0.id = R1.object_id) WHERE Q8.ticket_id = A1.ticket_id AND R1.inline = 0) AS attachment_count, (SELECT COUNT(R0.id) AS count FROM ost_thread Q7 JOIN ost_ticket Q8 ON (Q7.object_type = 'T' AND Q7.object_id = Q8.ticket_id) LEFT JOIN ost_thread_entry R0 ON (Q7.id = R0.thread_id) WHERE Q8.ticket_id = A1.ticket_id AND NOT R0.flags & 4 != 0) AS thread_count FROM ost_ticket A1 JOIN (SELECT Q7.ticket_id FROM ost_ticket Q7 JOIN ost_ticket_status Q8 ON (Q7.status_id = Q8.id) WHERE Q8.state = 'open' AND ((Q8.state = 'open' AND Q7.staff_id = 20) OR Q7.dept_id IN ('3')) ORDER BY Q7.created DESC LIMIT 38) A2 LEFT JOIN ost_lock A3 ON (A1.lock_id = A3.lock_id AND A3.expire > NOW()) LEFT JOIN ost_ticket__cdata A4 ON (A1.ticket_id = A4.ticket_id) JOIN ost_user A5 ON (A1.user_id = A5.id) LEFT JOIN ost_user_email A6 ON (A5.default_email_id = A6.id) LEFT JOIN ost_ticket_priority A7 ON (A4.priority = A7.priority_id) JOIN ost_ticket_status A8 ON (A1.status_id = A8.id) JOIN ost_department B0 ON (A1.dept_id = B0.id) LEFT JOIN ost_staff B1 ON (A1.staff_id = B1.staff_id) LEFT JOIN ost_team B2 ON (A1.team_id = B2.team_id) WHERE A1.ticket_id = A2.ticket_id GROUP BY A3.staff_id, A1.staff_id, A1.isoverdue, A1.team_id, A1.ticket_id, A1.number, A4.subject, A6.address, A1.source, A7.priority_color, A7.priority_desc, A1.status_id, A8.name, A8.state, A1.dept_id, B0.name, A5.name, A1.lastupdate, A1.isanswered, B1.firstname, B1.lastname, B2.name ORDER BY A1.created DESC
88239 a141427_support
localhost a141427_support

Query 00:13:18 SELECT A3.staff_id AS lock__staff_id, A1.staff_id AS staff_id, A1.isoverdue AS isoverdue, A1.team_id AS team_id, A1.ticket_id AS ticket_id, A1.number AS number, A4.subject AS cdata__subject, A6.address AS user__default_email__address, A1.source AS source, A7.priority_color AS cdata__:priority__priority_color, A7.priority_desc AS cdata__:priority__priority_desc, A1.status_id AS status_id, A8.name AS status__name, A8.state AS status__state, A1.dept_id AS dept_id, B0.name AS dept__name, A5.name AS user__name, A1.lastupdate AS lastupdate, A1.isanswered AS isanswered, B1.firstname AS staff__firstname, B1.lastname AS staff__lastname, B2.name AS team__name, (SELECT COUNT(R0.id) AS count FROM ost_thread Q7 JOIN ost_ticket Q8 ON (Q7.object_type = 'T' AND Q7.object_id = Q8.ticket_id) LEFT JOIN ost_thread_collaborator R0 ON (Q7.id = R0.thread_id) WHERE Q8.ticket_id = A1.ticket_id) AS collab_count, (SELECT COUNT(R1.id) AS count FROM ost_thread Q7 JOIN ost_ticket Q8 ON (Q7.object_type = 'T' AND Q7.object_id = Q8.ticket_id) LEFT JOIN ost_thread_entry R0 ON (Q7.id = R0.thread_id) LEFT JOIN ost_attachment R1 ON (R1.type = 'H' AND R0.id = R1.object_id) WHERE Q8.ticket_id = A1.ticket_id AND R1.inline = 0) AS attachment_count, (SELECT COUNT(R0.id) AS count FROM ost_thread Q7 JOIN ost_ticket Q8 ON (Q7.object_type = 'T' AND Q7.object_id = Q8.ticket_id) LEFT JOIN ost_thread_entry R0 ON (Q7.id = R0.thread_id) WHERE Q8.ticket_id = A1.ticket_id AND NOT R0.flags & 4 != 0) AS thread_count FROM ost_ticket A1 JOIN (SELECT Q7.ticket_id FROM ost_ticket Q7 JOIN ost_ticket_status Q8 ON (Q7.status_id = Q8.id) WHERE Q8.state = 'open' AND ((Q8.state = 'open' AND Q7.staff_id = 20) OR Q7.dept_id IN ('3')) ORDER BY Q7.created DESC LIMIT 38) A2 LEFT JOIN ost_lock A3 ON (A1.lock_id = A3.lock_id AND A3.expire > NOW()) LEFT JOIN ost_ticket__cdata A4 ON (A1.ticket_id = A4.ticket_id) JOIN ost_user A5 ON (A1.user_id = A5.id) LEFT JOIN ost_user_email A6 ON (A5.default_email_id = A6.id) LEFT JOIN ost_ticket_priority A7 ON (A4.priority = A7.priority_id) JOIN ost_ticket_status A8 ON (A1.status_id = A8.id) JOIN ost_department B0 ON (A1.dept_id = B0.id) LEFT JOIN ost_staff B1 ON (A1.staff_id = B1.staff_id) LEFT JOIN ost_team B2 ON (A1.team_id = B2.team_id) WHERE A1.ticket_id = A2.ticket_id GROUP BY A3.staff_id, A1.staff_id, A1.isoverdue, A1.team_id, A1.ticket_id, A1.number, A4.subject, A6.address, A1.source, A7.priority_color, A7.priority_desc, A1.status_id, A8.name, A8.state, A1.dept_id, B0.name, A5.name, A1.lastupdate, A1.isanswered, B1.firstname, B1.lastname, B2.name ORDER BY A1.created DESC
88244 a141427_support
localhost a141427_support
Query 00:12:55 UPDATE ost_staff SET lastlogin=NOW() WHERE staff_id=4
88246 a141427_support
localhost a141427_support
Query 00:12:37 SELECT backend FROM ost_staff WHERE backend IS NOT NULL AND (username='e.parysheva@klincity.ru' OR email='e.parysheva@klincity.ru')
88250 a141427_support
localhost a141427_support
Query 00:11:32 SELECT backend FROM ost_staff WHERE backend IS NOT NULL AND (username='e.parysheva@klincity.ru' OR email='e.parysheva@klincity.ru')
88264 a141427_support
localhost a141427_support
Query 00:07:55 SELECT backend FROM ost_staff WHERE backend IS NOT NULL AND (username='e.parysheva@klincity.ru' OR email='e.parysheva@klincity.ru')
88266 a141427_support
localhost a141427_support
Query 00:07:50 SELECT backend FROM ost_staff WHERE backend IS NOT NULL AND (username='e.parysheva@klincity.ru' OR email='e.parysheva@klincity.ru')
88274 a141427_support
localhost a141427_support
Query 00:06:40 SELECT backend FROM ost_staff WHERE backend IS NOT NULL AND (username='muta-gen@mail.ru' OR email='muta-gen@mail.ru')
88277 a141427_support
localhost a141427_support
Query 00:06:26 SELECT backend FROM ost_staff WHERE backend IS NOT NULL AND (username='muta-gen@mail.ru' OR email='muta-gen@mail.ru')
88286 a141427_support
localhost a141427_support
Query 00:05:36 SELECT backend FROM ost_staff WHERE backend IS NOT NULL AND (username='muta-gen@mail.ru' OR email='muta-gen@mail.ru')
88294 a141427_support
localhost a141427_support
Query 00:03:44 SELECT backend FROM ost_staff WHERE backend IS NOT NULL AND (username='e.parysheva@klincity.ru' OR email='e.parysheva@klincity.ru')
88296 a141427_support
localhost a141427_support
Query 00:03:33 SELECT backend FROM ost_staff WHERE backend IS NOT NULL AND (username='e.parysheva@klincity.ru' OR email='e.parysheva@klincity.ru')
88325 a141427_support
localhost a141427_support
Query 00:03:07 SELECT backend FROM ost_staff WHERE backend IS NOT NULL AND (username='e.parysheva@klincity.ru' OR email='e.parysheva@klincity.ru')
88328 a141427_support
localhost a141427_support
Query 00:02:25 SELECT backend FROM ost_staff WHERE backend IS NOT NULL AND (username='e.parysheva@klincity.ru' OR email='e.parysheva@klincity.ru')
88331 postfix
localhost postfix
Sleep 00:00:51
88335 a141427_support
localhost a141427_support
Query 00:00:15 SELECT backend FROM ost_staff WHERE backend IS NOT NULL AND (username='muta-gen@mail.ru' OR email='muta-gen@mail.ru')
88336 a141427_support
localhost a141427_support
Query 00:00:12 SELECT backend FROM ost_staff WHERE backend IS NOT NULL AND (username='muta-gen@mail.ru' OR email='muta-gen@mail.ru')